P1797 – Jaguar DTC

Jaguar DTC P1797 – CAN data bus, ECMITCM – malfunctio

DTC P1797 meaning on Jaguar

1. DTC P1797 refers to a malfunction in the CAN data bus communication between the Engine Control Module (ECM) and the Transmission Control Module (TCM) in a Jaguar vehicle.

Jaguar DTC P1797 symptoms

• Check Engine Light (CEL) illuminated on the dashboard.
• Transmission shifting issues or erratic behavior.
• Vehicle may go into limp mode, limiting performance.

Jaguar DTC P1797 causes

• Faulty wiring or connectors in the CAN data bus system.
• Defective ECM or TCM.
• Interference from other electronic components.

Jaguar DTC P1797 seriousness

1. If left unresolved, DTC P1797 can lead to further damage to the ECM and TCM.
2. Continued driving with this issue can result in transmission failure.

How to diagnose DTC P1797 on Jaguar

1. Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the CAN data bus system.
2. Check for any visible damage to wiring or connectors.
3. Test the ECM and TCM for proper functionality.

How to fix DTC P1797 on Jaguar

1. Repair or replace any damaged wiring or connectors in the CAN data bus system.
2. If the ECM or TCM is faulty, they may need to be replaced and reprogrammed.
3. Ensure all electronic components are properly shielded to prevent interference.

How to erase DTC P1797 on Jaguar

1. After fixing the underlying issue, use a diagnostic scanner to clear the trouble codes from the ECM and TCM memory.
2. Ensure the CEL is no longer illuminated and test drive the vehicle to confirm the repair.