P0359 indicates that the powertrain control module has detected an open circuit in the primary side of ignition coil I. This means the PCM is not seeing the expected voltage signal when it tries to energize the coil, which can prevent the coil from firing properly.
The coil’s internal primary circuit has opened, preventing the PCM from driving the coil. This is the most common cause of P0359.
A broken wire, chafed insulation, or corroded pin in the harness between the PCM and coil I creates an open circuit.
Corrosion, bent pins, or a partially disengaged connector can interrupt the primary‑circuit signal.
If the fuse or relay that powers the coil driver stage is open, the PCM will see no voltage on the primary circuit.
The transistor or driver inside the PCM that switches the coil primary can fail, but this is rare compared to coil or wiring issues.
No. The PCM is rarely the cause; most P0359 cases are due to a faulty coil, wiring, or connector. Only consider PCM replacement after those components have been verified good.
Yes. If the fuse that powers the coil driver circuit is open, the PCM will see no voltage on the primary coil circuit and set P0359.
Driving is possible but not recommended; the misfire can cause rough running, loss of power, and potential damage to the catalytic converter over time.
Clearing the code only turns off the Check Engine Light; the underlying open circuit must be repaired, or the code will return.