Ignition Coil "H" Primary/Secondary Circuit
An electrical fault is detected in both the primary and the secondary circuit of ignition coil H. The ECU cannot drive the coil correctly, so the cylinder served by coil H misfires or does not fire at all. Causes: an open or shorted primary control wire, an internal coil winding fault, a failed igniter/driver, or wiring or connector damage at the coil.
Affected components
- Ignition coil
- Coil wiring
Common causes
- High likelihood: Ignition coil failed
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.