B1213moderate severityBody
Incorrect Number of Ignition Keys Learned
on 2006 GMC Canyon 2.8L I4 · RWD
What this code means
The anti-theft system detects fewer than the minimum required keys programmed to the vehicle. This can prevent starting or trigger security warnings.
Symptoms
- No-start condition
- Security light on
- Key not recognized
Common causes
- Only one key programmed
- Failed key programming
- Faulty immobilizer module
- Damaged transponder in key
Diagnostic steps
- Read stored key count with scan tool
- Verify programmed keys
- Program required number of keys
- Test immobilizer module function
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Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
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Serious DIY~$100
BlueDriver Pro →
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Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open