P1366 Cadillac Code Description
The Cadillac diagnostic code P1366 indicates a problem with the ignition control for engine cylinder 6. Specifically, the code means that the ignition control for this cylinder does not switch after being activated. This can lead to a misfire in cylinder 6, affecting engine performance and efficiency.
Common Causes of P1366 Cadillac Code
NOTE: The listed causes may not be a complete list of all potential issues, and there may be other causes.
- Faulty ignition control module
- Faulty ignition coil for cylinder 6
- Worn or fouled spark plug in cylinder 6
- Damaged wiring or connections related to cylinder 6
- ECM (engine control module) issues affecting cylinder 6 ignition control
Symptoms of P1366 Cadillac
- Rough idle: The engine may vibrate or shake abnormally at idle.
- Loss of power: The vehicle may struggle to accelerate or maintain speed.
- Decreased fuel efficiency: The engine may consume more fuel than usual.
- Engine stalling: The vehicle may suddenly stop while driving or idling.
How to Fix P1366 Cadillac Code
- Diagnose the specific cause of the issue using a scan tool to identify the faulty component.
- Replace the faulty ignition control module, ignition coil, or spark plug in cylinder 6 if necessary.
- Check and repair any damaged wiring or connections related to cylinder 6.
- Clear the diagnostic trouble codes from the ECM and test the vehicle to ensure the problem is resolved.
- Perform a final inspection to confirm proper operation of cylinder 6 ignition control.