Can a flashing check engine light be a misfire?
In a perfect world, a flashing check engine light for DTCs P0301 through P0312 would always be solved by installing a new ignition coil. If this were true, technicians wouldn’t need countless hours of diagnostics training. The reality is that a misfire can be more than a missing spark from an ignition coil.
How can you tell if your ignition coil is failing?
Having your exhaust emit black smoke and the smell of gasoline is not only embarrassing, but it could be an early symptom of ignition coil failure. Backfiring occurs when unused fuel is emitted through the exhaust system. If left unmanaged could do serious damage to your exhaust system, including the catalytic converter.
Can a misfire be a missing spark from an ignition coil?
The reality is that a misfire can be more than a missing spark from an ignition coil. Misfires that are below the vehicles threshold often pass unnoticed, but a constant misfire is hard to be overlooked by you or the engine management system.
What does it mean when your car has a misfire code?
These misfires would set a DTC inside the engine computer. Misfires that turn on the check engine light and log a cylinder-specific fault code are the easiest to diagnose, while random misfire codes can be more troublesome.
What does the p0351 code on the ignition coil mean?
What the P0351 code means. The P0351 DTC is seen when the ignition coil A primary or secondary circuit has a malfunction. The engine control module is looking for specific signals from the ignition coil A and when these signals are not seen the ECU sets the Check Engine Light.
What are the codes on my Check Engine light?
My car started running poorly with the check engine light flashing. The codes P0301 (cylinder 1 misfire), P2301 (Ign. coil A primary control circuit high), P0351 (ign. coil A primary/secondary circuit). I replaced the coil and the spark plugs The car ran perfectly fine for two days and then it happened again, with the same codes.
What is the diagnostic code for ignition coil a?
P0351 code definition. P0351 is a general OBD2 diagnostic trouble code (DTC) that points to a fault with the ignition coil A.
In a perfect world, a flashing check engine light for DTCs P0301 through P0312 would always be solved by installing a new ignition coil. If this were true, technicians wouldn’t need countless hours of diagnostics training. The reality is that a misfire can be more than a missing spark from an ignition coil.