Mercedes DTC

2013 Mercedes Sprinter Fault Codes List PDF: Your Expert Guide

Decoding a 2013 Mercedes Sprinter Fault Codes List Pdf is crucial for efficient vehicle maintenance and repair. AutoExplain.com provides expert insights into understanding these diagnostic trouble codes, enabling technicians and owners to quickly identify and resolve issues. With AutoExplain.com you gain access to swift remote support, ensuring minimal downtime and optimal performance for your Sprinter van.

1. Understanding Mercedes-Benz Sprinter Fault Codes

Mercedes-Benz Sprinter fault codes are alphanumeric identifiers that signal malfunctions within the vehicle’s systems. These codes, also known as Diagnostic Trouble Codes (DTCs), are generated by the onboard computer to pinpoint specific issues, ranging from minor sensor glitches to significant mechanical failures. Accurately interpreting these codes is the first step toward effective diagnostics and repair.

1.1. What is a Fault Code?

A fault code is a standardized system error message generated by a vehicle’s onboard diagnostic system. It indicates a specific malfunction or deviation from normal operating parameters. In Mercedes-Benz Sprinter vehicles, these codes are crucial for diagnosing problems affecting engine performance, transmission, braking systems, and more.

1.2. How Fault Codes are Generated

Fault codes are generated when the Sprinter’s sensors detect abnormalities in the vehicle’s systems. These sensors constantly monitor various parameters such as engine temperature, air flow, and wheel speed. When a sensor reading falls outside the acceptable range, the vehicle’s computer logs a corresponding fault code. This code is stored in the vehicle’s memory and can be retrieved using a diagnostic scan tool.

1.3. Importance of Accurate Interpretation

Accurate interpretation of fault codes is vital for efficient and effective vehicle repair. Misinterpreting a code can lead to unnecessary repairs, wasted time, and increased costs. By correctly identifying the root cause of the problem, technicians can perform the necessary repairs quickly and accurately. This not only saves time and money but also ensures the vehicle is restored to its optimal operating condition.

2. Common Mercedes-Benz Sprinter Fault Codes

Several fault codes frequently appear in Mercedes-Benz Sprinter vehicles. Recognizing these common codes can expedite the diagnostic process and guide technicians toward the most likely causes of the problems.

2.1. P0400 Series Fault Codes

The P0400 series fault codes typically relate to issues within the exhaust system, including the Exhaust Gas Recirculation (EGR) system. These codes can indicate problems with the EGR valve, sensor malfunctions, or issues with the exhaust pressure.

2.1.1. Detailed Breakdown of P0400 Codes

Mercedes Fault Code	Fault Code Meaning
P0466	Purge Flow Sensor Circuit Range/Performance
P0467	Purge Flow Sensor Circuit Low Input
P0468	Purge Flow Sensor Circuit High Input
P0469	Purge Flow Sensor Circuit Intermittent
P0470	Exhaust Pressure Sensor Malfunction
P0471	Exhaust Pressure Sensor Range/Performance
P0472	Exhaust Pressure Sensor Low
P0473	Exhaust Pressure Sensor High
P0474	Exhaust Pressure Sensor Intermittent
P0475	Exhaust Pressure Control Valve Malfunction
P0476	Exhaust Pressure Control Valve Range/Performance
P0477	Exhaust Pressure Control Valve Low
P0478	Exhaust Pressure Control Valve High
P0479	Exhaust Pressure Control Valve Intermittent
P0480	Cooling Fan 1 Control Circuit Malfunction
P0481	Cooling Fan 2 Control Circuit Malfunction
P0482	Cooling Fan 3 Control Circuit Malfunction
P0483	Cooling Fan Rationality Check Malfunction
P0484	Cooling Fan Circuit Over Current
P0485	Cooling Fan Power/Ground Circuit Malfunction

2.1.2. Diagnostic Steps for P0400 Series Codes

Check the EGR valve: Inspect the EGR valve for carbon buildup or damage.
Inspect the sensors: Test the exhaust pressure and purge flow sensors for proper function.
Check the wiring: Examine the wiring and connectors for any signs of damage or corrosion.
Use a scan tool: Clear the codes and retest the system to see if the codes reappear.

2.2. P0500 Series Fault Codes

The P0500 series fault codes are associated with vehicle speed sensors, idle control systems, and other related components. These codes can impact the vehicle’s ability to accurately measure speed, maintain a stable idle, or control other engine functions.

2.2.1. Detailed Breakdown of P0500 Codes

Mercedes Fault Code	Fault Code Meaning
P0500	Vehicle Speed Sensor Malfunction
P0501	Vehicle Speed Sensor Range/Performance
P0502	Vehicle Speed Sensor Low Input
P0503	Vehicle Speed Sensor Intermittent/Erratic/High
P0505	Idle Control System Malfunction
P0506	Idle Control System RPM Lower Than Expected
P0507	Idle Control System RPM Higher Than Expected
P0510	Closed Throttle Position Switch Malfunction
P0520	Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0521	Engine Oil Pressure Sensor/Switch Circuit Range/Performance
P0522	Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0523	Engine Oil Pressure Sensor/Switch Circuit High Voltage
P0530	A/C Refrigerant Pressure Sensor Circuit Malfunction
P0531	A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532	A/C Refrigerant Pressure Sensor Circuit Low Input
P0533	A/C Refrigerant Pressure Sensor Circuit High Input
P0534	Air Conditioner Refrigerant Charge Loss
P0550	Power Steering Pressure Sensor Circuit Malfunction
P0551	Power Steering Pressure Sensor Circuit Range/Performance
P0552	Power Steering Pressure Sensor Circuit Low Input
P0553	Power Steering Pressure Sensor Circuit High Input
P0554	Power Steering Pressure Sensor Circuit Intermittent
P0560	System Voltage Malfunction
P0561	System Voltage Unstable
P0562	System Voltage Low
P0563	System Voltage High
P0565	Cruise Control On Signal Malfunction
P0566	Cruise Control Off Signal Malfunction
P0567	Cruise Control Resume Signal Malfunction
P0568	Cruise Control Set Signal Malfunction
P0569	Cruise Control Coast Signal Malfunction
P0570	Cruise Control Accel Signal Malfunction
P0571	Cruise Control/Brake Switch A Circuit Malfunction
P0572	Cruise Control/Brake Switch A Circuit Low
P0573	Cruise Control/Brake Switch A Circuit High
P0574	Cruise Control Related Malfunction
P0575	Cruise Control Related Malfunction
P0576	Cruise Control Related Malfunction
P0578	Cruise Control Related Malfunction
P0579	Cruise Control Related Malfunction
P0580	Cruise Control Related Malfunction

2.2.2. Diagnostic Steps for P0500 Series Codes

Check the vehicle speed sensor: Inspect the sensor for damage and verify its connection.
Inspect the idle control valve: Clean or replace the idle control valve if it’s clogged or malfunctioning.
Check the wiring: Examine the wiring and connectors for any signs of damage or corrosion.
Use a scan tool: Clear the codes and retest the system to see if the codes reappear.

2.3. P0600 Series Fault Codes

The P0600 series fault codes generally indicate internal control module issues, such as memory errors or communication malfunctions. These codes can signal serious problems with the vehicle’s computer systems.

2.3.1. Detailed Breakdown of P0600 Codes

Mercedes Fault Code	Fault Code Meaning
P0600	Serial Communication Link Malfunction
P0601	Internal Control Module Memory Check Sum Error
P0602	Control Module Programming Error
P0603	Internal Control Module Keep Alive Memory (KAM) Error
P0604	Internal Control Module Random Access Memory (RAM) Error
P0605	Internal Control Module Read Only Memory (ROM) Error
P0606	PCM Processor Fault
P0608	Control Module VSS Output “A” Malfunction
P0609	Control Module VSS Output “B” Malfunction
P0620	Generator Control Circuit Malfunction
P0621	Generator Lamp “L” Control Circuit Malfunction
P0622	Generator Field “F” Control Circuit Malfunction
P0650	Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
P0654	Engine RPM Output Circuit Malfunction
P0655	Engine Hot Lamp Output Control Circuit Malfunction
P0656	Fuel Level Output Circuit Malfunction

2.3.2. Diagnostic Steps for P0600 Series Codes

Check the control module: Inspect the control module for any visible damage.
Verify power and ground: Ensure the control module has proper power and ground connections.
Check the wiring: Examine the wiring and connectors for any signs of damage or corrosion.
Use a scan tool: Clear the codes and retest the system to see if the codes reappear. In some cases, the control module may need to be reprogrammed or replaced.

2.4. P0700 Series Fault Codes

The P0700 series fault codes relate to transmission control system malfunctions, gear ratio issues, and solenoid problems. These codes can indicate problems with the transmission’s ability to shift properly, maintain correct gear ratios, or control various transmission functions.

2.4.1. Detailed Breakdown of P0700 Codes

Mercedes Fault Code	Fault Code Meaning
P0700	Transmission Control System Malfunction
P0701	Transmission Control System Range/Performance
P0702	Transmission Control System Electrical
P0703	Torque Converter/Brake Switch B Circuit Malfunction
P0704	Clutch Switch Input Circuit Malfunction
P0705	Transmission Range Sensor Circuit malfunction (PRNDL Input)
P0706	Transmission Range Sensor Circuit Range/Performance
P0707	Transmission Range Sensor Circuit Low Input
P0708	Transmission Range Sensor Circuit High Input
P0709	Transmission Range Sensor Circuit Intermittent
P0710	Transmission Fluid Temperature Sensor Circuit Malfunction
P0711	Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712	Transmission Fluid Temperature Sensor Circuit Low Input
P0713	Transmission Fluid Temperature Sensor Circuit High Input
P0714	Transmission Fluid Temperature Sensor Circuit Intermittent
P0715	Input/Turbine Speed Sensor Circuit Malfunction
P0716	Input/Turbine Speed Sensor Circuit Range/Performance
P0717	Input/Turbine Speed Sensor Circuit No Signal
P0718	Input/Turbine Speed Sensor Circuit Intermittent
P0719	Torque Converter/Brake Switch B Circuit Low
P0720	Output Speed Sensor Circuit Malfunction
P0721	Output Speed Sensor Range/Performance
P0722	Output Speed Sensor No Signal
P0723	Output Speed Sensor Intermittent
P0724	Torque Converter/Brake Switch B Circuit High
P0725	Engine Speed input Circuit Malfunction
P0726	Engine Speed Input Circuit Range/Performance
P0727	Engine Speed Input Circuit No Signal
P0728	Engine Speed Input Circuit Intermittent
P0730	Incorrect Gear Ratio
P0731	Gear 1 Incorrect Ratio
P0732	Gear 2 Incorrect Ratio
P0733	Gear 3 Incorrect Ratio
P0734	Gear 4 Incorrect Ratio
P0735	Gear 5 Incorrect Ratio
P0736	Reverse Incorrect Gear Ratio
P0740	Torque Converter Clutch Circuit Malfuction
P0741	Torque Converter Clutch Circuit Performance or Stuck Off
P0742	Torque Converter Clutch Circuit Stuck On
P0743	Torque Converter Clutch Circuit Electrical
P0744	Torque Converter Clutch Circuit Intermittent
P0745	Pressure Control Solenoid Malfunction
P0746	Pressure Control Solenoid Performance or Stuck Off
P0747	Pressure Control Solenoid Stuck On
P0748	Pressure Control Solenoid Electrical
P0749	Pressure Control Solenoid Intermittent
P0750	Shift Solenoid A Malfunction
P0751	Shift Solenoid A Performance or Stuck Off
P0752	Shift Solenoid A Stuck On
P0753	Shift Solenoid A Electrical
P0754	Shift Solenoid A Intermittent
P0755	Shift Solenoid B Malfunction
P0756	Shift Solenoid B Performance or Stuck Off
P0757	Shift Solenoid B Stuck On
P0758	Shift Solenoid B Electrical
P0759	Shift Solenoid B Intermittent
P0760	Shift Solenoid C Malfunction
P0761	Shift Solenoid C Performance or Stuck Off
P0762	Shift Solenoid C Stuck On
P0763	Shift Solenoid C Electrical
P0764	Shift Solenoid C Intermittent
P0765	Shift Solenoid D Malfunction
P0766	Shift Solenoid D Performance or Stuck Off
P0767	Shift Solenoid D Stuck On
P0768	Shift Solenoid D Electrical
P0769	Shift Solenoid D Intermittent
P0770	Shift Solenoid E Malfunction
P0771	Shift Solenoid E Performance or Stuck Off
P0772	Shift Solenoid E Stuck On
P0773	Shift Solenoid E Electrical
P0774	Shift Solenoid E Intermittent
P0780	Shift Malfunction
P0781	1-2 Shift Malfunction
P0782	2-3 Shift Malfunction
P0783	3-4 Shift Malfunction
P0784	4-5 Shift Malfunction
P0785	Shift/Timing Solenoid Malfunction
P0786	Shift/Timing Solenoid Range/Performance
P0787	Shift/Timing Solenoid Low
P0788	Shift/Timing Solenoid High
P0789	Shift/Timing Solenoid Intermittent
P0790	Normal/Performance Switch Circuit Malfunction

2.4.2. Diagnostic Steps for P0700 Series Codes

Check the transmission fluid: Inspect the fluid level and condition.
Inspect the solenoids: Test the shift solenoids for proper function.
Check the sensors: Verify the input and output speed sensors are functioning correctly.
Check the wiring: Examine the wiring and connectors for any signs of damage or corrosion.
Use a scan tool: Clear the codes and retest the system to see if the codes reappear.

2.5. P0800 Series Fault Codes

The P0800 series fault codes are related to transmission-related control circuits and switches. These codes can point to issues with the clutch position sensor, gear lever sensor, or other control circuits affecting the transmission.

2.5.1. Detailed Breakdown of P0800 Codes

Mercedes Fault Code	Fault Code Meaning
P0801	Reverse Inhibit Control Circuit Malfunction
P0803	1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0804	1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P0805	Clutch Position Sensor Circuit Malfunction
P0806	Clutch Position Sensor Circuit Range/Performance
P0807	Clutch Position Sensor Circuit Low
P0808	Clutch Position Sensor Circuit High
P0809	Clutch Position Sensor Circuit Intermittent Ckt
P0810	Clutch Position Control Malfunction
P0811	Clutch Slippage Excessive
P0812	Reverse Input Circuit Malfunction
P0813	Reverse Output Circuit Malfunction
P0814	Trans Range Display Circuit Malfunction
P0815	Upshift Switch Circuit Malfunction
P0816	Downshift Switch Circuit Malfunction
P0817	Starter Disable Circuit
P0818	Driveline Disconn. Switch Input
P0820	Gear Lever X-Y Sensor Circuit
P0821	Gear Lever X Sensor Circuit
P0822	Gear Lever Y Sensor Circuit
P0823	Gear Lever X Sensor Circuit Intermittent Ckt
P0824	Gear Lever Y Sensor Circuit Intermittent Ckt
P0830	Clutch Position Switch A Circuit Malfunction
P0831	Clutch Position Switch A Circuit Low
P0832	Clutch Position Switch A Circuit High
P0833	Clutch Position Switch B Circuit Malfunction
P0834	Clutch Position Switch B Circuit Low
P0835	Clutch Position Switch B Circuit High
P0836	4 Wheel Drive Switch Circuit Malfunction
P0837	4 Wheel Drive Switch CKT Range/Perf
P0838	4 Wheel Drive Switch Circuit Low
P0839	4 Wheel Drive Switch Circuit High
P0840	Trans Fluid Press Sensor/Switch A Circuit Malfunction
P0841	Trans Fluid Press Sensor/Switch A CKT Range/Perf
P0842	Trans Fluid Press Sensor/Switch A Circuit Low
P0843	Trans Fluid Press Sensor/Switch A Circuit High
P0844	Trans Fluid Press Sensor/Switch A CKT Intermittent
P0845	Trans Fluid Press Sensor/Switch B Circuit Malfunction
P0846	Trans Fluid Press Sensor/Switch B CKT Range/Perf
P0847	Trans Fluid Press Sensor/Switch B Circuit Low
P0848	Trans Fluid Press Sensor/Switch B Circuit High
P0849	Trans Fluid Press Sensor/Switch B CKT Intermittent

2.5.2. Diagnostic Steps for P0800 Series Codes

Check the clutch position sensor: Inspect the sensor for damage and verify its connection.
Inspect the gear lever sensor: Ensure the gear lever sensor is functioning correctly.
Check the wiring: Examine the wiring and connectors for any signs of damage or corrosion.
Use a scan tool: Clear the codes and retest the system to see if the codes reappear.

3. Advanced Diagnostic Techniques

Advanced diagnostic techniques can help pinpoint the root cause of complex issues in the Mercedes-Benz Sprinter. These methods often involve using specialized tools and software to analyze the vehicle’s systems in greater detail.

3.1. Using Diagnostic Scan Tools

Diagnostic scan tools are essential for reading and interpreting fault codes. Modern scan tools can provide real-time data, perform component tests, and offer detailed diagnostic information.

3.1.1. Benefits of Advanced Scan Tools

Real-time data: View live data from sensors and modules to identify anomalies.
Component testing: Perform tests on individual components to verify their function.
Detailed diagnostics: Access detailed information about fault codes, including possible causes and repair steps.

3.1.2. Selecting the Right Scan Tool

Choosing the right scan tool is crucial for effective diagnostics. Consider the following factors when selecting a scan tool:

Compatibility: Ensure the scan tool is compatible with Mercedes-Benz Sprinter vehicles.
Features: Look for advanced features such as real-time data, component testing, and bi-directional control.
Updates: Choose a scan tool that receives regular software updates to support the latest vehicle models and diagnostic procedures.

3.2. Analyzing Live Data Streams

Analyzing live data streams involves monitoring the real-time data from the vehicle’s sensors and modules. This can help identify intermittent problems and pinpoint the exact moment when a fault occurs.

3.2.1. Identifying Abnormal Readings

By monitoring live data streams, technicians can identify abnormal readings that indicate a problem. For example, if the engine temperature sensor is reading significantly higher than normal, it could indicate an overheating issue.

3.2.2. Correlating Data with Fault Codes

Correlating live data with fault codes can provide valuable insights into the root cause of a problem. For example, if a fault code indicates a problem with the mass air flow sensor, monitoring the live data from the sensor can confirm whether the sensor is indeed malfunctioning.

3.3. Performing Component Tests

Component tests involve using a scan tool to activate and test individual components. This can help verify whether a component is functioning correctly and identify problems such as short circuits, open circuits, or mechanical failures.

3.3.1. Activating Components with a Scan Tool

Many scan tools have the ability to activate components such as solenoids, relays, and actuators. This can help technicians verify whether the component is responding correctly to commands from the control module.

3.3.2. Measuring Component Performance

In addition to activating components, scan tools can also measure their performance. For example, a scan tool can measure the resistance of a solenoid or the voltage output of a sensor. This can help technicians determine whether the component is functioning within its specified parameters.

4. Mercedes-Benz Specific Diagnostic Procedures

Mercedes-Benz vehicles often require specific diagnostic procedures due to their advanced technology and unique design. Understanding these procedures is essential for accurate and effective diagnostics.

4.1. Diagnosing CAN Bus Issues

The Controller Area Network (CAN) bus is a communication network that allows various control modules in the vehicle to communicate with each other. Problems with the CAN bus can cause a wide range of issues, including communication errors, sensor malfunctions, and control module failures.

4.1.1. Identifying CAN Bus Fault Codes

CAN bus fault codes typically begin with the letter “U.” These codes indicate a loss of communication between control modules.

Mercedes Fault Code	Fault Code Meaning
U0001	High Speed CAN Communication Bus
U0002	High Speed CAN Communication Bus Performance
U0003	High Speed CAN Communication Bus (+) open
U0004	High Speed CAN Communication Bus (+) low
U0005	High Speed CAN Communication Bus (+) high
U0006	High Speed CAN Communication Bus (-) open
U0007	High Speed CAN Communication Bus (-) low
U0008	High Speed CAN Communication Bus (-) high
U0009	High Speed CAN Communication Bus (-) shorted to Bus (+)
U0010	Medium Speed CAN Communication Bus
U0011	Medium Speed CAN Communication Bus Performance
U0012	Medium Speed CAN Communication Bus (+) open
U0013	Medium Speed CAN Communication Bus (+) low
U0014	Medium Speed CAN Communication Bus (+) high
U0015	Medium Speed CAN Communication Bus (-) open
U0016	Medium Speed CAN Communication Bus (-) low
U0017	Medium Speed CAN Communication Bus (-) high
U0018	Medium Speed CAN Communication Bus (-) shorted to Bus (+)
U0019	Low Speed CAN Communication Bus
U0020	Low Speed CAN Communication Bus Performance
U0021	Low Speed CAN Communication Bus (+) open
U0022	Low Speed CAN Communication Bus (+) low
U0023	Low Speed CAN Communication Bus (+) high
U0024	Low Speed CAN Communication Bus (-) open
U0025	Low Speed CAN Communication Bus (-) low
U0026	Low Speed CAN Communication Bus (-) high
U0027	Low Speed CAN Communication Bus (-) shorted to Bus (+)
U0028	Vehicle Communication Bus A
U0029	Vehicle Communication Bus A Performance
U0030	Vehicle Communication Bus A (+) open
U0031	Vehicle Communication Bus A (+) low
U0032	Vehicle Communication Bus A (+) high
U0033	Vehicle Communication Bus A (-) open
U0034	Vehicle Communication Bus A (-) low
U0035	Vehicle Communication Bus A (-) high
U0036	Vehicle Communication Bus A (-) shorted to Bus (+)
U0037	Vehicle Communication Bus B
U0038	Vehicle Communication Bus B Performance
U0039	Vehicle Communication Bus B (+) open
U0040	Vehicle Communication Bus B (+) low
U0041	Vehicle Communication Bus B (+) high
U0042	Vehicle Communication Bus B (-) open
U0043	Vehicle Communication Bus B (-) low
U0044	Vehicle Communication Bus B (-) high
U0045	Vehicle Communication Bus B (-) shorted to Bus (+)
U0046	Vehicle Communication Bus C
U0047	Vehicle Communication Bus C Performance
U0048	Vehicle Communication Bus C (+) open
U0049	Vehicle Communication Bus C (+) low
U0050	Vehicle Communication Bus C (+) high
U0051	Vehicle Communication Bus C (-) open
U0052	Vehicle Communication Bus C (-) low
U0053	Vehicle Communication Bus C (-) high
U0054	Vehicle Communication Bus C (-) shorted to Bus (+)
U0055	Vehicle Communication Bus D
U0056	Vehicle Communication Bus D Performance
U0057	Vehicle Communication Bus D (+) open
U0058	Vehicle Communication Bus D (+) low
U0059	Vehicle Communication Bus D (+) high
U0060	Vehicle Communication Bus D (-) open
U0061	Vehicle Communication Bus D (-) low
U0062	Vehicle Communication Bus D (-) high
U0063	Vehicle Communication Bus D (-) shorted to Bus (+)
U0064	Vehicle Communication Bus E
U0065	Vehicle Communication Bus E Performance
U0066	Vehicle Communication Bus E (+) open
U0067	Vehicle Communication Bus E (+) low
U0068	Vehicle Communication Bus E (+) high
U0069	Vehicle Communication Bus E (-) open
U0070	Vehicle Communication Bus E (-) low
U0071	Vehicle Communication Bus E (-) high
U0072	Vehicle Communication Bus E (-) shorted to Bus (+)
U0073	Control Module Communications Bus Off
U0100	Lost Communication with ECM/PCM A
U0101	Lost Communication with TCM
U0102	Lost Communication with Transfer Case Control Module
U0103	Lost Communication with Gear Shift Module
U0104	Lost Communication with Cruise Control Module
U0105	Lost Communication with Fuel Injector Control Module
U0192	Lost Communication with Television
U0197	Lost Communication with Telephone Control Module
U0198	Lost Communication with Telematic Control Module
U0222	Lost Communication with Door Window Motor A
U0235	Lost Communications with Cruise Control Front Distance Range Sensor
U0301	Software Incompatibility with ECM/PCM
U0302	Software Incompatibility with TCM (Transmission Control Module)
U0303	Software Incompatibility with Transfer Case Control Module
U0321	Software Incompatibility with Ride Level Control Module
U0326	Software Incompatibility with Vehicle Immobilizer Control Module
U0327	Software Incompatibility with Vehicle Security Control ModuleMercedes new Bosch drive-by-wire throttle body failing
U0038	Vehicle Communication Bus B Performance

4.1.2. Testing CAN Bus Integrity

Testing the integrity of the CAN bus involves checking the wiring, connectors, and termination resistors. A multimeter can be used to measure the resistance and voltage of the CAN bus circuits.

4.2. Addressing Electrical System Faults

Electrical system faults are common in modern vehicles due to the increasing complexity of the electrical systems. These faults can range from simple problems such as blown fuses to more complex issues such as short circuits or open circuits.

4.2.1. Diagnosing Short Circuits

Diagnosing short circuits involves using a multimeter to check for continuity between a circuit and ground. If there is continuity, it indicates a short circuit.

4.2.2. Diagnosing Open Circuits

Diagnosing open circuits involves using a multimeter to check for continuity within a circuit. If there is no continuity, it indicates an open circuit.

4.3. Resetting and Recalibrating Systems

Many systems in Mercedes-Benz vehicles require resetting or recalibrating after repairs. This ensures that the system is functioning correctly and that the control modules are properly synchronized.

4.3.1. Procedures for Resetting Control Modules

Resetting control modules typically involves using a diagnostic scan tool to clear the module’s memory and reset its parameters. The exact procedure varies depending on the module and the scan tool.

4.3.2. Recalibrating Sensors

Recalibrating sensors involves using a diagnostic scan tool to teach the control module the correct readings for the sensor. This is often necessary after replacing a sensor or performing certain repairs.

5. Case Studies: Real-World Examples

Examining real-world case studies can provide valuable insights into how to diagnose and repair common problems in Mercedes-Benz Sprinter vehicles. These examples highlight the importance of accurate diagnostics and the use of advanced diagnostic techniques.

5.1. Case Study 1: P261F71 – Circulation Pump Malfunction

Fault Code Meaning:	The output for circulation pump has a malfunction. Actuator is blocked.
Known Problem Of:	Mercedes Sprinter Vans
Likely Causes:	Coolant intrusion into 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 waterpump 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 (antifreeeze) 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