What does P0875 Mean? The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. When you see P0875 engine fault code on your engine code reader this description will help you. engine code P0875P0875 fixobd P0875dtc P0875obd code P0875obd2 P0875P0875 car codediagnostic code P0875car code P0875check engine code P0875fehlercode P0875P0875 fiatcodigo P0875codigo falla P0875P0875 kody b??dówcodigo de falla P0875 What are the common causes of P0875 ? Common causes include a low transmission fluid condition (caused by a transmission fluid leak), a defective transmission high pressure pump, a faulty or slipping transmission, a faulty transmission temperature sensor, overheating engine, or faulty PCM. When this code is set, it is imperative that the transmission be checked prior to further vehicle operation. How do you troubleshoot P0875 ? If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Searches related to P0875 - Transmission Fluid Pressure Sensor/Switch 'D' Circuit p0875 allison po875 p0843 allison p0700 p0843 duramax