P0300 Multiple Cylinder Misfire
SYMPTOM LISTP-0300 MULTIPLE CYLINDER MIS-FIRE
P-0301 CYLINDER #1 MIS-FIRE
P-0302 CYLINDER #2 MIS-FIRE
P-0303 CYLINDER #3 MIS-FIRE
P-0304 CYLINDER #4 MIS-FIRE
Test Note: All symptoms listed above are diagnosed using the same tests.
P-0300 MULTIPLE CYLINDER MIS-FIRE
When Monitored
With the engine running, after successfully performing Crank Sensor learn.
Set Condition
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.
P-0301 CYLINDER #1 MIS-FIRE
When Monitored
With the engine running, after successfully performing Crank Sensor learn.
Set Condition
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.
P-0302 CYLINDER #2 MIS-FIRE
When Monitored
With the engine running, after successfully performing Crank Sensor learn.
Set Condition
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.
P-0303 CYLINDER #3 MIS-FIRE
When Monitored
With the engine running, after successfully performing Crank Sensor learn.
Set Condition
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.
P-0304 CYLINDER #4 MIS-FIRE
When Monitored
With the engine running, after successfully performing Crank Sensor learn.
Set Condition
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.
OTHER POSSIBLE CAUSES FOR MIS-FIRE
- Cam, crank, valve timing, or vacuum problem
- Electronic ignition coil output low
- Engine mechanical problem
- Secondary ignition pattern irregular
- Fuel contamination
- Fuel pressure leak down out of specification
- Fuel pump amperage out of specification
- Fuel pump capacity out of specification
- Fuel pump pressure out of specification
- Mis-fire does not reoccur