OBD-II Error Code P0359: How to Fix It

Q: Can I drive with code P0359?

It's not recommended. The misfire can damage the catalytic converter and reduce fuel economy. Drive only to a repair shop if necessary.

Q: How much does it cost to fix P0359?

Typically $100-$300 for a DIY coil replacement. Shop labor may add $100-$200 for diagnosis and installation.

Q: What does ignition coil I primary circuit mean?

It refers to the low-voltage side of the coil (12V from battery/ECM). A fault means the ECM detected an open, short, or resistance issue in that circuit.

Q: Will clearing the code fix it?

No, clearing only erases the code. The underlying problem will cause the code to return unless repaired.

Q: Can a bad ground cause P0359?

Yes, poor ground at the coil or ECM can trigger this code. Always check ground connections.

Abstract

Error code P0359 indicates a problem in the primary circuit of ignition coil I (the 9th cylinder in some engines). This means the engine control module (ECM) has detected an electrical fault in the coil's primary wiring or the coil itself. Common symptoms include misfires, rough idle, and a check engine light.