Technical Definition:
Cylinder 9 Misfire Detected
Trouble Code: P0309
Address: 0x0309
System: Powertrain
Subsystem:
Address: 0x0309
System: Powertrain
Subsystem:
Technical Description:
Possible Causes:
Possible Symptoms:
Cylinder 9 Misfire Detected
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty spark plug 9
– Clogged or faulty fuel injector 9
– Faulty ignition coil 9
– Fuel injector 9 harness is open or shorted
– Fuel injector 9 circuit poor electrical connection
– Ignition coil 9 harness is open or shorted
– Ignition coil 9 circuit poor electrical connection
– Insufficient cylinder 9 compression
– Incorrect fuel pressure
– Intake air leak
Specific Makes:
– Lack/loss of power
– Hard start
– Engine hesitation