U1451
Invalid Or Missing Data For Anti-Theft Module Vehicle Immobilized
U1451 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Anti-Theft Module Vehicle Immobilized. Common causes: immobilizer module malfunction, problems with wiring or connectors. Estimated repair cost: $56–278.
Symptoms
- The car won't start
- The immobilizer indicator is flashing
- The engine stalls immediately after starting
- Loss of communication with the anti-theft module
- Error message on the dashboard
Causes
- Immobilizer module malfunction
- Problems with wiring or connectors
- Software failure
- Damage to the chip in the ignition key
- Problems with the CAN bus
How to Fix
- Check the condition of the battery and the voltage in the on-board network
- Inspect the connectors and wiring of the immobilizer module
- Read error codes using a diagnostic scanner
- Reflash or replace the immobilizer module if necessary
- Repair only from an authorized dealer
Related codes
FAQ
What does the U1451 code mean?
U1451 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Anti-Theft Module Vehicle Immobilized
What causes a U1451 error code?
The most common causes of U1451 include: Immobilizer module malfunction; Problems with wiring or connectors; Software failure; Damage to the chip in the ignition key.
How do I fix a U1451 diagnostic trouble code?
To fix U1451: Check the condition of the battery and the voltage in the on-board network. Inspect the connectors and wiring of the immobilizer module. Read error codes using a diagnostic scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1451?
Yes, but get it checked soon
How much does it cost to fix U1451?
The estimated repair cost for U1451 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat