What does P0854 Mean? The PCM has detected a malfunction in the drive switch input circuit. The transfer case shift selector range sensor inputs data to the PCM where it is utilized to calculate engine RPM, fuel delivery strategy, and engine timing, among other things. This code applies to vehicles equipped with four-wheel drive and an automatic transmission only. engine code P0854P0854 fixobd P0854dtc P0854obd code P0854obd2 P0854P0854 car codediagnostic code P0854car code P0854check engine code P0854fehlercode P0854P0854 fiatcodigo P0854codigo falla P0854P0854 kody b??dówcodigo de falla P0854 What are the common causes of P0854 ? An air leak forward of the DPF will change the sensor readings resulting in the code Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks. A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture. How do you troubleshoot P0854 ? Several repairs can fix a P0854 trouble code and include: Repair or replace damaged system wiring and connectors Retest system and continue to repair any damaged or defective wiring Replace damaged or defective drive switch Replace damaged transfer case range sensor Clear all codes, test-drive the vehicle, and rescan to see if any codes reappear Searches related to P0854 Code - Drive Switch Input Circuit Low P0854 P0855
