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U3631 Engine Code Repair

Meaning of U3631 engine trouble code is a kind of network trouble code and when your car's 'U3631 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.

U3631 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 U3631 code is occuring now you should check U3631 repair processes.
Now don't ask yourself; What should you do with U3631 code ?
The solution is here :

U3631 Possible Solution:

U3631 Engine

Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.

U3631 Code Meaning :

U
OBD-II Diagnostic Network (U) Trouble Code For Engine

3
Ignition System Or Misfire

6
Fuel Composition Sensor Circuit Malfunction

3
Turbocharger Boost Sensor A Circuit Low

1
Shift Solenoid E Performance or Stuck Off

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.

U3631 OBD-II Diagnostic Network (U) Trouble Code Description

U3631 engine trouble code is about Shift Solenoid E Performance or Stuck Off.

Main reason For U3631 Code

The reason of U3631 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

U3631 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.