Accessory Power Circuit
Table of contents
B1451 GMC Possible Causes
- Faulty Keyless Entry Control Module
- Keyless Entry Control Module harness is open or shorted
- Keyless Entry Control Module circuit poor electrical connection
How do I fix code B1451 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B1451 01 Accessory Power Circuit Short to Battery
- B1451 02 Accessory Power Circuit Short to Ground
- B1451 04 Accessory Power Circuit Open
Cost of diagnosing the B1451 GMC code
The cost of diagnosing the B1451 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1451 GMC Description
The Keyless Entry Control Module provides backup controls for the ignition power circuit, through the control circuit, by applying voltage to the circuit. The ignition power circuit is energized when the vehicle power mode is in Vehicle ON or Vehicle in Service Mode.