P2921 Engine Trouble Code
Meaning of P2921 engine trouble code is a kind of powertrain trouble code and P2921 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.
P2921 Fault Symptoms :
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If one of these reasons for P2921 code is occuring now you should check P2921 repair processes.
Now don't ask yourself; What should you do with P2921 code ? The solution is here : |
P2921 Possible Solution:
Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage. |
P2921 Code Meaning :
P | 2 | 9 | 2 | 1 |
---|---|---|---|---|
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Injector Circuit Malfunction - Cylinders | Turbocharger Boost Sensor A Circuit Low | 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.
P2921 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP2921 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.Main reason For P2921 CodeThe reason of P2921 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders. |
P2921 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.