P0312
Cylinder 12 Misfire Detected
Generic code
Ignition System
High severity
Hard repair
Free on OBD DashX
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What P0312 means
- The fault code P0312 indicates that there is a misfiring issue in Cylinder 12
Possible symptoms
- Engine misfires or runs rough, especially at idle or under load
- Decreased engine performance or power
- Poor fuel efficiency
- Check Engine Light (CEL) illuminated
Possible causes
- Faulty ignition coil in cylinder 12
- Spark plug in cylinder 12 is worn, fouled, or damaged
- Fuel injector in cylinder 12 is clogged or malfunctioning
- Low compression in cylinder 12
- Faulty engine control module (ECM)
Related parts
- Crankshaft Position Sensor: The crankshaft position sensor monitors the position of the crankshaft to regulate fuel injection. Problems lead to engine misfire and engine stalling
Possible solutions
- Test and replace the faulty ignition coil in cylinder 12, if necessary
- Replace the spark plug in cylinder 12 if it is worn, fouled, or damaged
- Clean or replace the fuel injector in cylinder 12 if it is clogged or malfunctioning
- Perform a compression test to check for low compression in cylinder 12 and repair as needed
- Test and replace the engine control module (ECM) if it is determined to be faulty
Free on OBD DashX
P0312 on OBD DashX
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