P0307

Tests 1 - 4:

Tests 5 - 8:

SYMPTOM
P0307-CYLINDER # 7 MISFIRE

TEST NOTE
This symptom is diagnosed using the test P0300-MULTIPLE CYLINDER MISFIRE.

WHEN MONITORED
Any time the engine is running, and the adaptive numerator has been successfully updated.

SET CONDITION
When more than a 1% misfire rate is measured during two trips, or with a 6% to 30% misfire rate during one trip.

POSSIBLE CAUSES
- Intermittent misfire
- Secondary ignition
- Engine mechanical problem
- Fuel system problem
- Erratic CAM/crank sensor signals
- Other possible causes for misfire
- PCM