What does code P0359 mean?

Q: What does code P0359 mean?

Ignition Coil 'I' Primary/Secondary Circuit. P0359 indicates that the engine control module (ECM) has detected an abnormal condition in the primary or secondary circuit of ignition coil 'I', which is typically the ninth coil in the firing order on engines with multiple coils. The ECM monitors the coil's electrical behavior and sets this code when the circuit does not respond as expected, often due to an open, short, or excessive resistance.

DTC codes / P03xx · Ignition system and misfire / P0359

P0359Ignition Coil 'I' Primary/Secondary Circuit

P0359 indicates that the engine control module (ECM) has detected an abnormal condition in the primary or secondary circuit of ignition coil 'I', which is typically the ninth coil in the firing order on engines with multiple coils. The ECM monitors the coil's electrical behavior and sets this code when the circuit does not respond as expected, often due to an open, short, or excessive resistance.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.