P0301
Cylinder 1 Misfire Detected
Generic code
Ignition System
High severity
Hard repair
Free on OBD DashX
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What P0301 means
- “The fault code P0301 indicates that there is a misfire detected in cylinder 1 of the engine. This may cause the engine to run poorly or not start at all.”
Possible symptoms
- Illuminated check engine light
- Engine runs poorly or not at all
- Rough idle or stalling
- Reduced engine power or acceleration
- Increased fuel consumption
Possible causes
- Faulty spark plug in cylinder 1
- Failed ignition coil in cylinder 1
- Clogged or dirty fuel injector in cylinder 1
- Low compression in cylinder 1
- Vacuum leak in cylinder 1
- 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
- Replace the spark plug in cylinder 1
- Replace the ignition coil in cylinder 1
- Clean or replace the fuel injector in cylinder 1
- Repair any low compression issues in cylinder 1
- Fix any vacuum leaks in cylinder 1
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0301 on OBD DashX
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