B3031
Security System Controller In Learn Mode
B3031 is an OBD-II diagnostic trouble code meaning: Security System Controller In Learn Mode. Common causes: activating learning mode after replacing keys or immobilizer, security controller software failure. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Problems starting the engine
- Security system blocks engine operation
Causes
- Activating learning mode after replacing keys or immobilizer
- Security controller software failure
- Problems with the security system wiring harness or connectors
How to Fix
- Check service history (whether keys or immobilizer were replaced)
- Reset the error with an OBD-II scanner and check if it returns
- Check the integrity of the wiring harness and connectors of the security system
- If necessary, reprogram the security system controller
Related codes
Error B3031 by Vehicle Brand
FAQ
What does the B3031 code mean?
B3031 is an OBD-II diagnostic trouble code that indicates: Security System Controller In Learn Mode
What causes a B3031 error code?
The most common causes of B3031 include: Activating learning mode after replacing keys or immobilizer; Security controller software failure; Problems with the security system wiring harness or connectors.
How do I fix a B3031 diagnostic trouble code?
To fix B3031: Check service history (whether keys or immobilizer were replaced). Reset the error with an OBD-II scanner and check if it returns. Check the integrity of the wiring harness and connectors of the security system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3031?
Do not drive — repair immediately
How much does it cost to fix B3031?
The estimated repair cost for B3031 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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