What does code P1797 mean on Jaguar vehicles?
The ECU detects a communication failure between ECM and TCM over the CAN network.
OBD-II Code Jaguar
P1797 — Jaguar — CAN Data Bus ECM to TCM Communication Malfunction
The ECU detects a communication failure between ECM and TCM over the CAN network.
Common symptoms
- Fail-safe mode engaged
Possible causes
- CAN network wiring fault
Initial recommendation
Inspect CAN communication lines between ECM and TCM.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Jaguar code P1797 with your vehicle's actual symptoms for more complete diagnostic guidance.
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