C2991 Engine Trouble Code
Meaning of C2991 engine trouble code is a kind of chassis trouble code and C2991 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.
C2991 Fault Symptoms :
If one of these reasons for C2991 code is occuring now you should check C2991 repair processes.
Now don't ask yourself; What should you do with C2991 code ?
The solution is here :
C2991 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.
C2991 Code Meaning :
|OBD-II Diagnostic Chassis (C) Trouble Code For Engine||Fuel And Air Metering (Injector Circuit Malfunctions Only)||Injector Circuit Malfunction - Cylinders||Crankshaft Position Sensor A Circuit Malfunction||Crankshaft Position Sensor A Circuit Low Input|
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.
C2991 OBD-II Diagnostic Chassis (C) Trouble Code DescriptionC2991 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.
Main reason For C2991 CodeThe reason of C2991 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.
Parts or components should not be replaced with reference to only a C2991 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.