Possible causes
– Faulty Ignition Coil 1
– Ignition Coil 1 harness is open or shorted
– Ignition Coil 1 circuit poor electrical connection
– Ignition Coil 1 harness is open or shorted
– Ignition Coil 1 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine may be running rough
– Engine may be running rough