P1955 Mercedes Sprinter 2007 Mercedes Sprinter (311) 2.1L Diesel fault code P1955

The fault code P1955 in a 2007 Mercedes Sprinter (311) 2.1L Diesel indicates a problem with the exhaust gas recirculation (EGR) valve. The EGR valve is responsible for recirculating a portion of the engine’s exhaust gases back into the combustion chamber to reduce emissions.

When the P1955 fault code is triggered, it means that the EGR valve is not functioning properly. This could be due to various reasons, such as a clogged or malfunctioning valve, a faulty EGR position sensor, or an issue with the EGR control circuit.

To diagnose and fix the issue, several steps can be taken. First, it’s essential to inspect and clean the EGR valve to ensure it is not obstructed by carbon deposits or debris. If cleaning the valve does not resolve the problem, the EGR position sensor should be tested for proper operation or potentially replaced if found faulty.

Additionally, it is crucial to check the wiring and connections of the EGR control circuit to ensure there are no loose connections or damaged wires. If any issues are found, they should be repaired or replaced accordingly.

It is recommended to consult with a professional mechanic or Mercedes-Benz dealership for a thorough diagnosis and repair of the P1955 fault code. They will have the necessary tools and expertise to accurately identify the cause of the issue and provide the appropriate solution to get your Mercedes Sprinter back to optimal performance.


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