U1797
Lack of Acknowledgment For Door Locks
U1797 is an OBD-II diagnostic trouble code meaning: Lack of Acknowledgment For Door Locks. Common causes: open or short circuit in the lock control circuit, malfunction of the lock actuator. Estimated repair cost: $6–56.
Symptoms
- The central locking does not work when the button is pressed
- Doors lock/unlock with delay
- Intermittent operation of the central locking
- The malfunction indicator on the instrument panel is on
- The error is stored in the ECU memory
Causes
- Open or short circuit in the lock control circuit
- Malfunction of the lock actuator
- Problems with the door control module
- Oxidation of contacts in system connectors
- Damage to the wiring harness in the doorway
How to Fix
- Check the central locking system fuses
- Diagnose the condition of lock actuators
- Check the integrity of wiring and contacts
- Scan the door control module for errors
- If necessary, replace faulty components
Related codes
FAQ
What does the U1797 code mean?
U1797 is an OBD-II diagnostic trouble code that indicates: Lack of Acknowledgment For Door Locks
What causes a U1797 error code?
The most common causes of U1797 include: Open or short circuit in the lock control circuit; Malfunction of the lock actuator; Problems with the door control module; Oxidation of contacts in system connectors.
How do I fix a U1797 diagnostic trouble code?
To fix U1797: Check the central locking system fuses. Diagnose the condition of lock actuators. Check the integrity of wiring and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1797?
Yes, but get it checked soon
How much does it cost to fix U1797?
The estimated repair cost for U1797 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat