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.
DTC B0608: BCM Power MODING Error: Description
Body Control Module (BCM) receives voltage inputs from 3 ignition signals. BCM receives voltage from IGN 0 fuse (wake-up signal) when ignition switch is in any position except LOCK. BCM receives voltage from PCM-BCM fuse (10-amp) when ignition switch is in RUN or START position. BCM receives voltage from CRANK SIGNAL fuse (10-amp) when ignition switch is in START position.
DTC B0608 will set when BCM detects any of the following conditions for more than 0.3 second: Ignition 1 is active and Ignition 0 is inactive; CRANK is active and Ignition 0 is inactive; or CRANK is active and Ignition 1 is inactive. No driver warning message will be displayed.
If conditions for malfunction no longer exist, history DTC will clear after 100 consecutive ignition cycles. DTC B0608 will also clear when conditions no longer exist or when scan tool is used to clear codes.
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.