Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Conditions for Setting the DTC
B1370 01
Ignition 1 voltage circuit is shorted to voltage.
B1370 06
- Ignition 1 voltage circuit is open.
- B+ circuit of the ignition switch open or shorted to ground.
B1380 01
Accessory voltage circuit is shorted to voltage.
B1380 06
- Accessory voltage circuit is open.
- B+ circuit of the ignition switch open or shorted to ground.
B1440
BCM senses an open or short to voltage on the off/run/crank voltage circuit when both ignition accessory/run and ignition run/crank parameters are active.
BCM senses an open on the B+ circuit to the ignition switch while the engine is running. An open on the B+ circuit can be caused by a short to ground on any of the circuits listed below:
- B+
- Accessory voltage
- Run/crank ignition 1 voltage BCM terminal 19, X4
- Off/run/crank voltage
B1441 01
Off/run/crank voltage circuit is shorted to voltage.
B1441 06
Off/run/crank voltage circuit is open.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.