B26FC
Key Registration
B26FC is an OBD-II diagnostic trouble code meaning: Key Registration. Common causes: ignition key malfunction, problems with the key reader antenna. Estimated repair cost: $33–167.
Symptoms
- Engine won't start
- Immobilizer indicator flashing
- The key is not recognized
- The engine starts and immediately stalls
- Display message about key failure
Causes
- Ignition key malfunction
- Problems with the key reader antenna
- Break in the wiring harness between the control unit and the reader
- Control unit software failure
- Wrong key programming procedure
- Faulty immobilizer control unit
How to Fix
- Read fault codes and freeze frame data
- Check the physical condition of the key (battery power, damage)
- Check the integrity of the wiring harness to the key reader
- Diagnose the key reader antenna
- Follow the correct key learning/registration procedure
- If necessary, reflash or replace the control unit
Related codes
FAQ
What does the B26FC code mean?
B26FC is an OBD-II diagnostic trouble code that indicates: Key Registration
What causes a B26FC error code?
The most common causes of B26FC include: Ignition key malfunction; Problems with the key reader antenna; Break in the wiring harness between the control unit and the reader; Control unit software failure.
How do I fix a B26FC diagnostic trouble code?
To fix B26FC: Read fault codes and freeze frame data. Check the physical condition of the key (battery power, damage). Check the integrity of the wiring harness to the key reader. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B26FC?
Yes, but get it checked soon
How much does it cost to fix B26FC?
The estimated repair cost for B26FC is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat