OBD2 P0307

P0307

Technical Definition:

Cylinder 7 Misfire Detected

Trouble Code: P0307
Address: 0x0307
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

Cylinder 7 Misfire Detected

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty spark plug 7
– Clogged or faulty fuel injector 7
– Faulty ignition coil 7
– Fuel injector 7 harness is open or shorted
– Fuel injector 7 circuit poor electrical connection
– Ignition coil 7 harness is open or shorted
– Ignition coil 7 circuit poor electrical connection
– Insufficient cylinder 7 compression
– Incorrect fuel pressure
– Intake air leak

Specific Makes:

– Lack/loss of power
– Hard start
– Engine hesitation