DTC P1300 Set With DTC P1201-P1206 Or P1301-P1306: Random Misfire Detected
NOTE:
Trouble shoot DTC P0171, P0172, P0174, P0175, P0335, P0336, P0401, P0505, P1128, P1129, P1336, P1337, P1381, P1382, P1386, P1387, P1491, P1498, or P1508, if set, before proceeding.
- If DTC P1300 or DTC P1201-P1206 or P1301-P1306 are set, check for:
- Insufficient fuel pump pressure or inadequate fuel flow.
- Clogging, blocked or leaking fuel line.
- Clogging fuel filter.
- Stuck open fuel pressure regulator.
- EGR system malfunction.
- An open or leaking ignition coil wire.
- Ignition Control Module (ICM) malfunction.
- Carbon deposits on valves.
- Low engine compression.
- An Idle Air Control (IAC) valve malfunction.
- A fast idle thermovalve malfunction.
- Fuel octane level less than specification.
- Inadequate fuel level.
Repair as necessary. If no problems are found, go to next step.
- If misfire condition occurs only at low engine RPM and load, check EGR system.
- If misfire condition occurs only while accelerating, check the following items in order listed: ignition coils and ignition wires, and ICM.
- If misfire condition occurs only at high engine RPM and load, check the following items in order listed: ignition coils and ignition wires, and ICM.
- If misfire condition is not specific, check the following items in order listed: ignition coils and ignition wires, ICM, and spark plug voltage detection system.