B2991 Engine Trouble Code
Meaning of B2991 engine trouble code is a kind of body trouble code and B2991 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.
B2991 Fault Symptoms :
If one of these reasons for B2991 code is occuring now you should check B2991 repair processes.
Now don't ask yourself; What should you do with B2991 code ?
The solution is here :
B2991 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.
B2991 Code Meaning :
|OBD-II Diagnostic Body (B) 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.
B2991 OBD-II Diagnostic Body (B) Trouble Code DescriptionB2991 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.
Main reason For B2991 CodeThe reason of B2991 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.
Parts or components should not be replaced with reference to only a B2991 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.