P2306
Ignition Coil C Primary Control Circuit Low
The primary control of ignition coil C reads below the calibrated minimum. The cylinder served by this coil will misfire.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Internal coil shortCommon
- Wiring fault on coil CPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Ignition Coil
- Coil Driver
- Ignition Wiring
P2306 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.