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U1879 Engine Code Repair

Meaning of U1879 engine trouble code is a kind of network trouble code and U1879 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.

U1879 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 U1879 code is occuring now you should check U1879 repair processes.
Now don't ask yourself; What should you do with U1879 code ?
The solution is here :

U1879 Possible Solution:

U1879 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.

U1879 Code Meaning :

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

1
Fuel And Air Metering

8
Fuel Rail Pressure Sensor Circuit Malfunction

7
Cylinder 4 Contribution/Balance Fault

9
Clutch Position Sensor Circuit Malfunction

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.

U1879 OBD-II Diagnostic Network (U) Trouble Code Description

U1879 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For U1879 Code

The reason of U1879 OBD-II Engine Trouble Code is Fuel Rail Pressure Sensor Circuit Malfunction.

U1879 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.