Ignition L Control Signal Circuit Low
Ignition L Control Signal Circuit Low: the signal voltage is below the expected range. This line drives an ignition coil group; a fault causes misfire on those cylinders.
Affected components
- Ignition coil
Common causes
- High likelihood: Short to ground
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Harness chafing through insulation
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.