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Cadillac Coupe C0391 Engine Trouble Code

Cadillac Coupe C0391 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 $2,000 and you can't do it yourself unless you're an experienced mechanic.

Cadillac Coupe C0391 Code Meaning :

C	0	3	9	1
OBD-II Diagnostic Chassis (C) Trouble Code For Engine	Intake Valve Control Solenoid Circuit Low	Throttle/Pedal Position Sensor/Switch A Circuit Intermittent	Crankshaft Position Sensor A Circuit Malfunction	Crankshaft Position Sensor A Circuit Low Input

When you check Cadillac Coupe car engine light came on code C0391 the reason should be . However manufacturer may have a different definition for the C0391 OBD-II Diagnostic Chassis (C) Trouble Code. So you should chech it on our car models.

C0391 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for C0391 code is occuring now you should check C0391 repair processes.
Now don't ask yourself; What should you do with C0391 code ?
The solution is here :

Cadillac Coupe C0391 Possible Solution :

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

C0391 OBD-II Diagnostic Chassis (C) Trouble Code Description

C0391 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For C0391 Code

The reason of C0391 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

Parts or components should not be replaced with reference to only a C0391 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

	Example: 0120