Jaguar DTC P1797 – CAN data bus, ECMITCM – malfunctio
DTC P1797 meaning on Jaguar
- 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
- If left unresolved, DTC P1797 can lead to further damage to the ECM and TCM.
- Continued driving with this issue can result in transmission failure.
How to diagnose DTC P1797 on Jaguar
- Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the CAN data bus system.
- Check for any visible damage to wiring or connectors.
- Test the ECM and TCM for proper functionality.
How to fix DTC P1797 on Jaguar
- Repair or replace any damaged wiring or connectors in the CAN data bus system.
- If the ECM or TCM is faulty, they may need to be replaced and reprogrammed.
- Ensure all electronic components are properly shielded to prevent interference.
How to erase DTC P1797 on Jaguar
- After fixing the underlying issue, use a diagnostic scanner to clear the trouble codes from the ECM and TCM memory.
- Ensure the CEL is no longer illuminated and test drive the vehicle to confirm the repair.
Recommended tools for Jaguar diagnostics
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