Mercedes-Benz Codes: Your Expert Guide to Diagnostics

Mercedes-benz Codes are essential for diagnosing and resolving issues in your vehicle. At AutoExplain.com, we provide comprehensive information and remote support to help you understand these codes, identify problems, and implement effective solutions. Whether you’re dealing with engine malfunctions, transmission issues, or electrical problems, understanding Mercedes diagnostic codes is the first step toward efficient repairs, which can save you time and money.

1. Understanding Mercedes-Benz Diagnostic Trouble Codes (DTCs)

Modern Mercedes-Benz vehicles are equipped with sophisticated onboard computer systems that monitor various sensors and systems. When a problem arises, the system generates a Diagnostic Trouble Code (DTC), also known as a fault code. These codes provide valuable information about the nature and location of the issue, enabling technicians and owners to diagnose and repair the vehicle effectively.

1.1. What is a Mercedes-Benz Code?

A Mercedes-Benz code is a standardized alphanumeric identifier that corresponds to a specific issue detected by the vehicle’s onboard diagnostic system. These codes are crucial for understanding the nature of a problem and guiding the repair process.

1.2. Why are Mercedes-Benz Codes Important?

Mercedes-Benz codes are important for several reasons:

• Accurate Diagnosis: They help pinpoint the exact issue, reducing guesswork and saving time.
• Efficient Repairs: Knowing the code allows technicians to focus on the specific problem area, leading to faster and more effective repairs.
• Cost Savings: By identifying the problem early, you can prevent further damage and avoid costly repairs down the line.
• Informed Decisions: Understanding the codes helps you make informed decisions about the necessary repairs and maintenance.

1.3 Types of Mercedes-Benz Diagnostic Codes

Mercedes-Benz diagnostic codes are categorized into several main types, each addressing specific areas of the vehicle’s systems. Understanding these categories is crucial for accurate diagnosis and effective repairs. Here’s a breakdown of the primary code types:

P-Codes (Powertrain Codes):

• Description: These codes relate to the engine, transmission, and associated components. They are standardized across all vehicle manufacturers, ensuring a common language for powertrain diagnostics.
• Examples:
  • P0XXX: Generic powertrain codes applicable to all vehicles.
  • P1XXX: Manufacturer-specific powertrain codes, unique to Mercedes-Benz.
• Typical Issues: Engine misfires, transmission problems, fuel system malfunctions, and emission control issues.

B-Codes (Body Codes):

• Description: These codes pertain to the vehicle’s body systems, including comfort, convenience, and safety features.
• Examples:
  • B1XXX: Codes related to airbags, central locking, electric windows, and seat adjustments.
• Typical Issues: Airbag malfunctions, issues with power windows, problems with the central locking system, and seat adjustment failures.

C-Codes (Chassis Codes):

• Description: Chassis codes cover systems such as ABS (Anti-lock Braking System), ESP (Electronic Stability Program), and suspension.
• Examples:
  • C1XXX: Codes indicating problems with the braking system, stability control, or suspension system.
• Typical Issues: ABS sensor failures, ESP malfunctions, issues with the air suspension system, and brake performance problems.

U-Codes (Network Communication Codes):

• Description: These codes relate to communication issues between the various electronic control units (ECUs) in the vehicle. They indicate problems with the CAN (Controller Area Network) bus or other communication networks.
• Examples:
  • U0XXX: Codes indicating a loss of communication between different modules in the vehicle.
• Typical Issues: Communication failures between ECUs, issues with the CAN bus, and problems affecting multiple systems due to network disruptions.

Understanding these code categories allows technicians and vehicle owners to narrow down the potential issues and focus their diagnostic efforts on the relevant systems. This targeted approach saves time and ensures more accurate and effective repairs.

1.4. Where to Find Mercedes-Benz Codes

Mercedes-Benz codes can be retrieved using a diagnostic scan tool connected to the vehicle’s OBD-II (On-Board Diagnostics II) port, typically located under the dashboard. These scan tools are available for purchase, or you can visit a professional mechanic who has the necessary equipment.

2. Common Mercedes-Benz Error Messages and Their Meanings

Mercedes-Benz vehicles can display a variety of error messages on the dashboard, each indicating a specific issue. Here’s a breakdown of some common error messages and their potential causes:

2.1. Check Engine Light

The Check Engine Light (CEL) is one of the most common warning lights. It can indicate a wide range of issues, from minor problems to severe engine malfunctions.

• Possible Causes:
  • Loose gas cap
  • Faulty oxygen sensor
  • Catalytic converter failure
  • Mass airflow sensor issue
  • Spark plug or ignition coil problem
  • Vacuum leak
• Action:
  • Have the vehicle scanned with a diagnostic tool to retrieve the specific fault code.
  • Address the issue promptly to prevent further damage.

2.2. Brake Warning Light

The Brake Warning Light can indicate several brake-related issues, ranging from low brake fluid to more serious problems with the braking system.

• Possible Causes:
  • Low brake fluid level
  • Worn brake pads
  • Faulty brake sensor
  • ABS (Anti-lock Braking System) malfunction
  • Parking brake engaged
• Action:
  • Check the brake fluid level and top up if necessary.
  • Inspect the brake pads for wear and replace if needed.
  • Have the ABS system checked by a professional technician.

2.3. ABS Light

The ABS (Anti-lock Braking System) light indicates a problem with the anti-lock braking system.

• Possible Causes:
  • Faulty ABS sensor
  • ABS module malfunction
  • Wiring issue
• Action:
  • Have the ABS system checked by a professional technician.
  • Avoid hard braking until the issue is resolved.

2.4. SRS Light (Supplemental Restraint System)

The SRS light indicates a problem with the airbag system or seatbelt pretensioners.

• Possible Causes:
  • Faulty airbag sensor
  • Seatbelt pretensioner issue
  • Wiring problem
• Action:
  • Have the SRS system checked by a professional technician.
  • Address the issue immediately to ensure the airbags deploy properly in an accident.

2.5. Coolant Temperature Warning Light

This light indicates that the engine coolant temperature is too high, which can lead to overheating.

• Possible Causes:
  • Low coolant level
  • Faulty thermostat
  • Water pump failure
  • Radiator issue
• Action:
  • Pull over safely and allow the engine to cool down.
  • Check the coolant level and add coolant if necessary.
  • Have the cooling system checked by a professional technician.

2.6. Tire Pressure Monitoring System (TPMS) Light

This light indicates that one or more tires have low pressure.

• Possible Causes:
  • Low tire pressure
  • Faulty TPMS sensor
• Action:
  • Check the tire pressure in all tires and inflate to the recommended level.
  • Have the TPMS sensor checked by a professional technician if the light persists.

2.7. Battery Warning Light

This light indicates a problem with the charging system, such as a faulty alternator or a weak battery.

• Possible Causes:
  • Faulty alternator
  • Weak battery
  • Loose or corroded battery connections
• Action:
  • Have the charging system checked by a professional technician.
  • Replace the battery if necessary.

3. Specific Mercedes-Benz Fault Codes and Their Meanings

Here are some specific Mercedes-Benz fault codes, their meanings, potential causes, and possible solutions:

3.1. Mercedes Fault Code: P261F71

• Meaning: The output for the circulation pump has a malfunction. The actuator is blocked.
• Known Problem Of: Mercedes Sprinter Vans
• Likely Causes: Coolant intrusion into the vacuum system via the water pump.
• What’s Happening?: On model OM651 4 Cylinder Diesel Engine, the coolant water pump is vacuum actuated. The internal seal in the water pump gives way and allows coolant (antifreeze) to enter the vacuum system. The vacuum system operates with the engine running. As the vehicle is driven, the vacuum is so powerful it pulls coolant (antifreeze) deeper into the vacuum system, causing havoc on the entire vacuum system.
• Possible Symptoms You May Experience:
  • Check Engine Light
  • Little to no acceleration
  • Coolant leak
  • Brake Pedal Pressure issues
  • Engine overheating
• Parts That Could Need Replacement:
  • Water Pump
  • Coolant
  • Seals
  • Tubes
  • Hoses
  • Vacuum Actuators
  • Vacuum Pump
• System(s) Affected:
  • Engine
  • Cooling System
  • Vacuum System
  • Turbocharging
  • Brake System
• Severity: Can be very severe if left unfixed. Repair requires a MASTER LEVEL Technician.
• Solution: Contact AutoExplain.com for expert remote diagnostic support and guidance.

3.2. Mercedes Fault Code: P126A00

• Meaning: Intake Port Shutoff Actuator is faulty.
• Known Problem Of: Mercedes Sprinter Vans with OM642 Engine oil cooler leak
• Likely Causes: Failure of component: intake manifolds, or the intake manifold actuator motor.
• What’s Happening?: Over time (several thousand miles), the inside of the intake manifolds gets clogged with EGR soot buildup, causing the intake swirl flaps to stick. The sticking or binding of these flaps then binds the motor, which causes the check engine light and/or a severe loss of acceleration.
• Possible Symptoms You May Experience:
  • Check Engine Light
  • Loss of power
  • Poor fuel economy
• Parts That Could Need Replacement:
  • Intake manifolds
  • Intake manifold actuator motor
• System(s) Affected: Engine
• Severity: Can be very severe if left unfixed. Repair requires a MASTER LEVEL Technician.
• Solution: AutoExplain.com offers remote diagnostic assistance and expert advice to resolve this issue efficiently.

3.3. P0400 Series Mercedes Fault Codes Meaning

The P0400 series of fault codes generally relates to issues within the Exhaust Gas Recirculation (EGR) system of Mercedes-Benz vehicles. The EGR system is crucial for reducing nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gas back into the engine’s intake manifold. This process lowers combustion temperatures, which in turn reduces NOx formation. Problems within this system can lead to increased emissions, reduced engine performance, and other drivability issues.

Here is a detailed table explaining the meaning and potential causes of various P0400 series fault codes:

Mercedes Fault Code	Fault Code Meaning	Possible Causes
P0466	Purge Flow Sensor Circuit Range/Performance	Faulty purge flow sensor, wiring issues (open, shorted), vacuum leaks in the purge system, ECM/PCM failure.
P0467	Purge Flow Sensor Circuit Low Input	Faulty purge flow sensor, wiring shorted to ground, poor connection, ECM/PCM failure.
P0468	Purge Flow Sensor Circuit High Input	Faulty purge flow sensor, wiring shorted to voltage, poor connection, ECM/PCM failure.
P0469	Purge Flow Sensor Circuit Intermittent	Intermittent fault in purge flow sensor, loose wiring connections, ECM/PCM issue.
P0470	Exhaust Pressure Sensor Malfunction	Faulty exhaust pressure sensor, wiring issues (open, shorted), ECM/PCM failure.
P0471	Exhaust Pressure Sensor Range/Performance	Blocked or damaged exhaust pressure sensor, exhaust leaks, wiring issues, ECM/PCM failure.
P0472	Exhaust Pressure Sensor Low	Faulty exhaust pressure sensor, wiring shorted to ground, exhaust leak, ECM/PCM failure.
P0473	Exhaust Pressure Sensor High	Faulty exhaust pressure sensor, wiring shorted to voltage, ECM/PCM failure.
P0474	Exhaust Pressure Sensor Intermittent	Intermittent fault in exhaust pressure sensor, loose wiring connections, ECM/PCM issue.
P0475	Exhaust Pressure Control Valve Malfunction	Faulty exhaust pressure control valve, wiring issues (open, shorted), vacuum leaks (if vacuum-operated), ECM/PCM failure.
P0476	Exhaust Pressure Control Valve Range/Performance	Blocked or damaged exhaust pressure control valve, vacuum leaks, wiring issues, ECM/PCM failure.
P0477	Exhaust Pressure Control Valve Low	Faulty exhaust pressure control valve, wiring shorted to ground, vacuum leaks, ECM/PCM failure.
P0478	Exhaust Pressure Control Valve High	Faulty exhaust pressure control valve, wiring shorted to voltage, ECM/PCM failure.
P0479	Exhaust Pressure Control Valve Intermittent	Intermittent fault in exhaust pressure control valve, loose wiring connections, vacuum leaks, ECM/PCM issue.
P0480	Cooling Fan 1 Control Circuit Malfunction	Faulty cooling fan relay, wiring issues (open, shorted), faulty cooling fan motor, ECM/PCM failure.
P0481	Cooling Fan 2 Control Circuit Malfunction	Faulty cooling fan relay, wiring issues (open, shorted), faulty cooling fan motor, ECM/PCM failure.
P0482	Cooling Fan 3 Control Circuit Malfunction	Faulty cooling fan relay, wiring issues (open, shorted), faulty cooling fan motor, ECM/PCM failure.
P0483	Cooling Fan Rationality Check Malfunction	Incorrect cooling fan operation, faulty sensors, ECM/PCM issue.
P0484	Cooling Fan Circuit Over Current	Excessive current draw in the cooling fan circuit, short circuit, faulty cooling fan motor, ECM/PCM issue.
P0485	Cooling Fan Power/Ground Circuit Malfunction	Faulty cooling fan relay, poor ground connection, wiring issues, ECM/PCM failure.

Common Symptoms of P0400 Series Faults:

• Check Engine Light
• Reduced engine performance
• Poor fuel economy
• Rough idling
• Failed emissions test

Diagnostic Steps:

1. Scan for Codes: Use an OBD-II scanner to confirm the specific fault code and check for any additional codes.
2. Visual Inspection: Check all vacuum lines, hoses, and wiring related to the EGR system for any signs of damage or leaks.
3. Sensor Testing: Use a multimeter to test the functionality of the EGR valve, pressure sensors, and temperature sensors.
4. Component Testing: Test the EGR valve for proper operation. It should open and close smoothly without sticking.
5. Wiring and Connections: Inspect all wiring and connectors for corrosion, damage, or loose connections.
6. Consult a Professional: If you are unsure about any of these steps, it is best to consult a professional technician.

If you encounter any of these P0400 series codes, AutoExplain.com is here to assist you. Contact us via WhatsApp at (+84)967469410 or email us at [email protected] for expert guidance and support.

3.4. P0500 Series Mercedes Fault Codes Meaning

The P0500 series of fault codes in Mercedes-Benz vehicles generally pertains to issues related to vehicle speed sensors, idle control systems, and various sensor circuits. These sensors and systems are critical for ensuring proper engine operation, fuel efficiency, and overall vehicle performance. Problems in these areas can lead to a variety of drivability issues, including stalling, rough idling, and incorrect speed readings.

Here is a detailed table explaining the meaning and potential causes of various P0500 series fault codes:

Mercedes Fault Code	Fault Code Meaning	Possible Causes
P0500	Vehicle Speed Sensor Malfunction	Faulty vehicle speed sensor (VSS), wiring issues (open, shorted), poor connection, ECM/PCM failure.
P0501	Vehicle Speed Sensor Range/Performance	Incorrect VSS signal, mismatched tire sizes, faulty VSS, wiring issues, ECM/PCM failure.
P0502	Vehicle Speed Sensor Low Input	Faulty VSS, wiring shorted to ground, poor connection, ECM/PCM failure.
P0503	Vehicle Speed Sensor Intermittent/Erratic/High	Intermittent fault in VSS, loose wiring connections, ECM/PCM issue.
P0505	Idle Control System Malfunction	Faulty idle air control (IAC) valve, vacuum leaks, throttle body issues, wiring problems, ECM/PCM failure.
P0506	Idle Control System RPM Lower Than Expected	Vacuum leaks, faulty IAC valve, carbon buildup in throttle body, ECM/PCM issue.
P0507	Idle Control System RPM Higher Than Expected	Faulty IAC valve, vacuum leaks, throttle body issues, ECM/PCM issue.
P0510	Closed Throttle Position Switch Malfunction	Faulty throttle position sensor (TPS), wiring issues, ECM/PCM failure.
P0520	Engine Oil Pressure Sensor/Switch Circuit Malfunction	Faulty oil pressure sensor/switch, wiring issues, low oil pressure, ECM/PCM failure.
P0521	Engine Oil Pressure Sensor/Switch Circuit Range/Performance	Incorrect oil pressure readings, faulty sensor, wiring issues, ECM/PCM failure.
P0522	Engine Oil Pressure Sensor/Switch Circuit Low Voltage	Low oil pressure, faulty sensor, wiring shorted to ground, ECM/PCM failure.
P0523	Engine Oil Pressure Sensor/Switch Circuit High Voltage	Faulty sensor, wiring shorted to voltage, ECM/PCM failure.
P0530	A/C Refrigerant Pressure Sensor Circuit Malfunction	Faulty A/C pressure sensor, wiring issues, low refrigerant, ECM/PCM failure.
P0531	A/C Refrigerant Pressure Sensor Circuit Range/Performance	Incorrect A/C pressure readings, faulty sensor, wiring issues, ECM/PCM failure.
P0532	A/C Refrigerant Pressure Sensor Circuit Low Input	Low refrigerant, faulty sensor, wiring shorted to ground, ECM/PCM failure.
P0533	A/C Refrigerant Pressure Sensor Circuit High Input	Faulty sensor, wiring shorted to voltage, ECM/PCM failure.
P0534	Air Conditioner Refrigerant Charge Loss	Refrigerant leak, faulty A/C components.
P0550	Power Steering Pressure Sensor Circuit Malfunction	Faulty power steering pressure sensor, wiring issues, low power steering fluid, ECM/PCM failure.
P0551	Power Steering Pressure Sensor Circuit Range/Performance	Incorrect power steering pressure readings, faulty sensor, wiring issues, ECM/PCM failure.
P0552	Power Steering Pressure Sensor Circuit Low Input	Low power steering fluid, faulty sensor, wiring shorted to ground, ECM/PCM failure.
P0553	Power Steering Pressure Sensor Circuit High Input	Faulty sensor, wiring shorted to voltage, ECM/PCM failure.
P0554	Power Steering Pressure Sensor Circuit Intermittent	Intermittent fault in power steering pressure sensor, loose wiring connections, ECM/PCM issue.
P0560	System Voltage Malfunction	Battery issues, alternator problems, wiring faults, ECM/PCM failure.
P0561	System Voltage Unstable	Loose battery connections, faulty alternator, ECM/PCM failure.
P0562	System Voltage Low	Weak battery, faulty alternator, excessive electrical load, ECM/PCM failure.
P0563	System Voltage High	Faulty alternator regulator, wiring issues, ECM/PCM failure.
P0565	Cruise Control On Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0566	Cruise Control Off Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0567	Cruise Control Resume Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0568	Cruise Control Set Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0569	Cruise Control Coast Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0570	Cruise Control Accel Signal Malfunction	Faulty cruise control switch, wiring issues, ECM/PCM failure.
P0571	Cruise Control/Brake Switch A Circuit Malfunction	Faulty brake switch, wiring issues, ECM/PCM failure.
P0572	Cruise Control/Brake Switch A Circuit Low	Faulty brake switch, wiring shorted to ground, ECM/PCM failure.
P0573	Cruise Control/Brake Switch A Circuit High	Faulty brake switch, wiring shorted to voltage, ECM/PCM failure.
P0574	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.
P0575	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.
P0576	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.
P0578	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.
P0579	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.
P0580	Cruise Control Related Malfunction	Varies; refer to specific sub-code for diagnosis.

Common Symptoms of P0500 Series Faults:

• Check Engine Light
• Erratic speedometer readings
• Cruise control not working
• Rough idling
• Stalling
• Poor A/C performance
• Power steering issues

Diagnostic Steps:

1. Scan for Codes: Use an OBD-II scanner to confirm the specific fault code and check for any additional codes.
2. Visual Inspection: Check all wiring and connectors related to the affected sensors and systems for any signs of damage or corrosion.
3. Sensor Testing: Use a multimeter to test the functionality of the vehicle speed sensor, idle air control valve, and other relevant sensors.
4. Vacuum Leak Check: Inspect all vacuum lines and connections for leaks.
5. Component Testing: Test the operation of the idle air control valve and other components.
6. System Voltage Check: Verify the system voltage is within the specified range.
7. Consult a Professional: If you are unsure about any of these steps, it is best to consult a professional technician.

If you encounter any of these P0500 series codes, AutoExplain.com is here to assist you. Contact us via WhatsApp at (+84)967469410 or email us at [email protected] for expert guidance and support.

3.5. P0600 Series Mercedes Fault Codes Meaning

The P0600 series of fault codes in Mercedes-Benz vehicles generally pertains to internal control module issues, communication link malfunctions, and generator control circuit problems. These codes indicate that there is a problem within the vehicle’s computer systems, which can affect various functions and lead to significant drivability issues.

Here is a detailed table explaining the meaning and potential causes of various P0600 series fault codes:

Mercedes Fault Code	Fault Code Meaning	Possible Causes
P0600	Serial Communication Link Malfunction	Wiring issues (open, shorted), faulty CAN bus, ECM/PCM failure.
P0601	Internal Control Module Memory Check Sum Error	Faulty ECM/PCM, software issues.
P0602	Control Module Programming Error	Incorrect programming, corrupted software, ECM/PCM failure.
P0603	Internal Control Module Keep Alive Memory (KAM) Error	Battery issues, poor connections, ECM/PCM failure.
P0604	Internal Control Module Random Access Memory (RAM) Error	Faulty ECM/PCM.
P0605	Internal Control Module Read Only Memory (ROM) Error	Faulty ECM/PCM.
P0606	PCM Processor Fault	Faulty ECM/PCM.
P0608	Control Module VSS Output “A” Malfunction	Faulty ECM/PCM, wiring issues.
P0609	Control Module VSS Output “B” Malfunction	Faulty ECM/PCM, wiring issues.
P0620	Generator Control Circuit Malfunction	Faulty alternator, wiring issues, ECM/PCM failure.
P0621	Generator Lamp “L” Control Circuit Malfunction	Faulty alternator, wiring issues, ECM/PCM failure.
P0622	Generator Field “F” Control Circuit Malfunction	Faulty alternator, wiring issues, ECM/PCM failure.
P0650	Malfunction Indicator Lamp (MIL) Control Circuit Malfunction	Wiring issues, faulty ECM/PCM.
P0654	Engine RPM Output Circuit Malfunction	Faulty ECM/PCM, wiring issues.
P0655	Engine Hot Lamp Output Control Circuit Malfunction	Faulty ECM/PCM, wiring issues.
P0656	Fuel Level Output Circuit Malfunction	Faulty ECM/PCM, wiring issues.

Common Symptoms of P0600 Series Faults:

• Check Engine Light
• Stalling
• Poor engine performance
• Transmission issues
• Electrical problems
• Failure of various systems

Diagnostic Steps:

1. Scan for Codes: Use an OBD-II scanner to confirm the specific fault code and check for any additional codes.
2. Visual Inspection: Check all wiring and connectors related to the affected modules for any signs of damage or corrosion.
3. System Voltage Check: Verify the system voltage is within the specified range.
4. Communication Link Testing: Test the CAN bus and other communication links for proper operation.
5. Module Programming: Check if the control modules are correctly programmed and updated.
6. Consult a Professional: Given the complexity of these issues, it is best to consult a professional technician with experience in Mercedes-Benz diagnostics.

If you encounter any of these P0600 series codes, AutoExplain.com is here to assist you. Contact us via WhatsApp at (+84)967469410 or email us at AutoExplain[email protected] for expert guidance and support.

3.6. P0700 Series Mercedes Fault Codes Meaning

The P0700 series of fault codes in Mercedes-Benz vehicles primarily pertains to issues within the transmission control system. These codes can indicate a wide range of problems, from sensor malfunctions to mechanical failures, all of which can significantly impact the vehicle’s drivability and performance.

Here is a detailed table explaining the meaning and potential causes of various P0700 series fault codes:

Mercedes Fault Code	Fault Code Meaning	Possible Causes
P0700	Transmission Control System Malfunction	Faulty transmission control module (TCM), wiring issues, low transmission fluid, mechanical problems within the transmission.
P0701	Transmission Control System Range/Performance	Incorrect gear ratios, faulty sensors, mechanical issues, low transmission fluid.
P0702	Transmission Control System Electrical	Wiring issues, faulty solenoids, TCM problems.
P0703	Torque Converter/Brake Switch B Circuit Malfunction	Faulty brake switch, wiring issues, TCM problems.
P0704	Clutch Switch Input Circuit Malfunction	Faulty clutch switch, wiring issues.
P0705	Transmission Range Sensor Circuit malfunction (PRNDL Input)	Faulty transmission range sensor (TRS), wiring issues, TCM problems.
P0706	Transmission Range Sensor Circuit Range/Performance	Misadjusted TRS, wiring issues, mechanical problems.
P0707	Transmission Range Sensor Circuit Low Input	Faulty TRS, wiring shorted to ground.
P0708	Transmission Range Sensor Circuit High Input	Faulty TRS, wiring shorted to voltage.
P0709	Transmission Range Sensor Circuit Intermittent	Loose wiring connections, intermittent TRS failure.
P0710	Transmission Fluid Temperature Sensor Circuit Malfunction	Faulty transmission fluid temperature sensor (TFTS), wiring issues.
P0711	Transmission Fluid Temperature Sensor Circuit Range/Performance	Incorrect temperature readings, faulty TFTS, wiring issues.
P0712	Transmission Fluid Temperature Sensor Circuit Low Input	Faulty TFTS, wiring shorted to ground.
P0713	Transmission Fluid Temperature Sensor Circuit High Input	Faulty TFTS, wiring shorted to voltage.
P0714	Transmission Fluid Temperature Sensor Circuit Intermittent	Loose wiring connections, intermittent TFTS failure.
P0715	Input/Turbine Speed Sensor Circuit Malfunction	Faulty input/turbine speed sensor, wiring issues.
P0716	Input/Turbine Speed Sensor Circuit Range/Performance	Incorrect speed readings, faulty sensor, wiring issues.
P0717	Input/Turbine Speed Sensor Circuit No Signal	Faulty sensor, wiring issues, mechanical failure.
P0718	Input/Turbine Speed Sensor Circuit Intermittent	Loose wiring connections, intermittent sensor failure.
P0719	Torque Converter/Brake Switch B Circuit Low	Faulty brake switch, wiring shorted to ground.
P0720	Output Speed Sensor Circuit Malfunction	Faulty output speed sensor, wiring issues.
P0721	Output Speed Sensor Range/Performance	Incorrect speed readings, faulty sensor, wiring issues.
P0722	Output Speed Sensor No Signal	Faulty sensor, wiring issues, mechanical failure.
P0723	Output Speed Sensor Intermittent	Loose wiring connections, intermittent sensor failure.
P0724	Torque Converter/Brake Switch B Circuit High	Faulty brake switch, wiring shorted to voltage.
P0725	Engine Speed input Circuit Malfunction	Faulty engine speed sensor, wiring issues.
P0726	Engine Speed Input Circuit Range/Performance	Incorrect speed readings, faulty sensor, wiring issues.
P0727	Engine Speed Input Circuit No Signal	Faulty sensor, wiring issues, mechanical failure.
P0728	Engine Speed Input Circuit Intermittent	Loose wiring connections, intermittent sensor failure.
P0730	Incorrect Gear Ratio	Mechanical problems within the transmission, faulty solenoids, low transmission fluid.
P0731	Gear 1 Incorrect Ratio	Mechanical problems within the