Technical Definition:

Cylinder 12 Misfire Detected

Technical Description:

Possible Causes:

• Faulty spark plug or wire
• Faulty coil (pack)
• Faulty oxygen sensor(s)
• Faulty fuel injector
• Burned exhaust valve
• Faulty catalytic converter(s)
• Running out of fuel
• Poor compression
• Defective computer

Possible Symptoms:

• the engine may be harder to start
• the engine may stumble / stumble, and/or hesitate
• other symptoms may also be present

Cylinder 12 Misfire Detected

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty spark plug 12
– Clogged or faulty fuel injector 12
– Faulty ignition coil 12
– Fuel injector 12 harness is open or shorted
– Fuel injector 12 circuit poor electrical connection
– Ignition coil 12 harness is open or shorted
– Ignition coil 12 circuit poor electrical connection
– Insufficient cylinder 12 compression
– Incorrect fuel pressure
– Intake air leak

Specific Makes:

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