U0879 Engine Trouble Code

Meaning of U0879 engine trouble code is a kind of network trouble code and U0879 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.

U0879 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 U0879 code is occuring now you should check U0879 repair processes.
Now don't ask yourself; What should you do with U0879 code ?
The solution is here :

U0879 Possible Solution:

U0879 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.

U0879 Code Meaning :

U 0 8 7 9
OBD-II Diagnostic Network (U) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Engine Oil Temperature Sensor Malfunction Cylinder 10 Contribution/balance Fault Reverse Input Circuit

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.

U0879 OBD-II Diagnostic Network (U) Trouble Code Description

U0879 engine trouble code is about Reverse Input Circuit.

Main reason For U0879 Code

The reason of U0879 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

U0879 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.