P0351 Honda Cr-V
Ignition Coil A Primary/Secondary Circuit Malfunction · Powertrain Code · High · Repair: Easy
What is P0351?
The ignition coil for cylinder 1 has an electrical fault.
When the Honda Cr-V triggers code P0351 (ignition coil a primary/secondary circuit malfunction), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Cr-V.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Cr-V.
Common Causes on Honda Cr-V
- Failed ignition coil on cylinder 1
- Damaged coil-on-plug connector or wiring
- PCM ignition driver circuit failure (rare)
- Short circuit in coil primary winding
Symptoms
- Check Engine Light on
- Cylinder 1 misfire (may also set P0301)
- Rough idle and engine vibration
- Loss of power
- Possible no-start if multiple coils affected
Notes for Honda Cr-V
Honda coil-on-plug boots can fill with oil from leaking valve cover gaskets — if oil is present in the spark plug wells, replace the valve cover gasket to prevent repeat failures.