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C12F4 Engine Code Repair

Meaning of C12F4 engine trouble code is a kind of chassis trouble code and C12F4 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.

C12F4 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 C12F4 code is occuring now you should check C12F4 repair processes.
Now don't ask yourself; What should you do with C12F4 code ?
The solution is here :

C12F4 Possible Solution:

C12F4 Engine

Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.

C12F4 Code Meaning :

C
OBD-II Diagnostic Chassis (C) Trouble Code For Engine

1
Fuel And Air Metering

2
Fuel Rail/System Pressure - Too High

f

4
Exhaust Gas Recirculation Sensor B Circuit High

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

C12F4 OBD-II Diagnostic Chassis (C) Trouble Code Description

C12F4 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Main reason For C12F4 Code

The reason of C12F4 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - Too High.

C12F4 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.