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C0478 Engine Code Repair

Meaning of C0478 engine trouble code is a kind of chassis trouble code and when the check engine light comes C0478 code on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you've already made it to the store, you might as well just replace it. While not car-threatening, it's good to take care of this right away to improve gas mileage.

C0478 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 C0478 code is occuring now you should check C0478 repair processes.
Now don't ask yourself; What should you do with C0478 code ?
The solution is here :

C0478 Possible Solution:

C0478 Engine

The firing order is an important part of the overall design of the engine and is determined during the design of the engine to eliminate as much engine vibration as possible. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run. The firing order for a particular engine is typically found in the repair manual specific to that model.

C0478 Code Meaning :

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

0
Intake Valve Control Solenoid Circuit Low

4
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

7
Cylinder 4 Contribution/Balance Fault

8
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

C0478 OBD-II Diagnostic Chassis (C) Trouble Code Description

C0478 engine trouble code is about Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical.

Main reason For C0478 Code

The reason of C0478 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

C0478 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.