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C3963 Engine Code Repair

Meaning of C3963 engine trouble code is a kind of chassis trouble code and when your car's 'C3963 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

C3963 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 C3963 code is occuring now you should check C3963 repair processes.
Now don't ask yourself; What should you do with C3963 code ?
The solution is here :

C3963 Possible Solution:

C3963 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.

C3963 Code Meaning :

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

3
Ignition System Or Misfire

9
Engine Oil Temperature Sensor Malfunction

6
Cylinder 1 Injector Circuit Low

3
Glow Plug/Heater Circuit 'A' Malfunction

The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.

C3963 OBD-II Diagnostic Chassis (C) Trouble Code Description

C3963 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.

Main reason For C3963 Code

The reason of C3963 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

C3963 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.