B1878 Engine Trouble Code

Meaning of B1878 engine trouble code is a kind of body trouble code and B1878 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 $2,140 and you can't do it yourself unless you're an experienced mechanic.

B1878 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 B1878 code is occuring now you should check B1878 repair processes.
Now don't ask yourself; What should you do with B1878 code ?
The solution is here :

B1878 Possible Solution:

B1878 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.

B1878 Code Meaning :

B 1 8 7 8
OBD-II Diagnostic Body (B) 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.

B1878 OBD-II Diagnostic Body (B) Trouble Code Description

B1878 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For B1878 Code

The reason of B1878 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

B1878 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.