Mercedes Benz

The OBD-II code P2135 relates to a problem with the throttle or pedal position sensor/switch "A" or "B" voltage correlation. This code indicates an inconsistency or mismatch in the voltage signals between the throttle position sensor (TPS) and the pedal position sensor (PPS) or their associated switches. The TPS and PPS are sensors that provide feedback to the engine control module (ECM) regarding the position of the throttle plate and the accelerator pedal. This information is crucial for determining the appropriate fuel and air mixture for engine operation. When the P2135 code is triggered, it suggests that there is an issue with the correlation or agreement between the voltage signals from these sensors. The potential causes for this code include: 1. Faulty throttle or pedal position sensor: One or both of the sensors may be malfunctioning, providing inconsistent or incorrect voltage readings. 2. Damaged or loose wiring: Issues with the wiring harness, ...