Code P1373 Jaguar Description
The Jaguar diagnostic code P1373 indicates early activation of the ignition coil in cylinder 3. In a conventional engine, the ignition coil is responsible for converting the battery’s low voltage into the high voltage needed to create a spark in the spark plugs. This spark ignites the air-fuel mixture in the combustion chamber, thus powering the engine. When the ignition coil in cylinder 3 activates too early, it can lead to misfires, rough idling, and overall poor engine performance.
Common Causes of P1373 Jaguar
NOTE: The listed causes may not be a complete list of all potential issues, and there may be other causes.
- Faulty ignition coil in cylinder 3
- Wiring issues or poor electrical connection
- Engine timing problems
- ECM/PCM software malfunction
- Vacuum leaks or intake manifold issues
Symptoms of P1373 Jaguar
- Misfires in cylinder 3
- Rough idling or stalling
- Decreased fuel efficiency
- Engine hesitation or lack of power
- Check engine light illuminated
How to Fix Jaguar Code P1373
- Diagnose the issue using a scan tool to confirm the P1373 code and locate the problem in cylinder 3.
- Inspect the ignition coil in cylinder 3 for any signs of damage or malfunction. Replace if necessary.
- Check the wiring and connections related to the ignition coil for any faults or loose connections. Repair or replace as needed.
- Perform a thorough inspection of the engine timing to ensure proper alignment. Adjust if necessary.
- Clear the error code from the ECM/PCM memory and test the vehicle to ensure the issue has been resolved.