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C3678 Engine Trouble Code

Meaning of C3678 engine trouble code is a kind of chassis trouble code and C3678 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.

C3678 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 C3678 code is occuring now you should check C3678 repair processes.
Now don't ask yourself; What should you do with C3678 code ?
The solution is here :

C3678 Possible Solution:

C3678 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.

C3678 Code Meaning :

C 3 6 7 8
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Ignition System Or Misfire Fuel Temperature Sensor B Circuit Range/Performance 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.

C3678 OBD-II Diagnostic Chassis (C) Trouble Code Description

C3678 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For C3678 Code

The reason of C3678 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

C3678 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.