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P1878 Engine Trouble Code

Meaning of P1878 engine trouble code is a kind of powertrain trouble code and P1878 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

P1878 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for P1878 code is occuring now you should check P1878 repair processes.
Now don't ask yourself; What should you do with P1878 code ?
The solution is here :

P1878 Possible Solution:

P1878 Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

P1878 Code Meaning :

P 1 8 7 8
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Engine Oil Temperature Sensor Malfunction Cylinder 10 Contribution/balance Fault Clutch Position Sensor Circuit Malfunction

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.

P1878 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1878 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For P1878 Code

The reason of P1878 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P1878 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.