P2C30
Ignition Coil Primary Circuit Fuse A
The ECM detects an open or blown fuse on the ignition coil primary supply circuit A. Affected coils receive no operating voltage.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Primary supply fuse blown by short circuitCommon
- Shorted ignition coil drawing excess currentPossible
Parts involved
- Ignition Coil Fuse A
- Ignition Coils
- Wiring Harness
P2C30 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.