Control Module Wake-up Circuit Low
The wake-up input on the control module reads stuck low — usually a short to ground or a permanently asserted wake signal. The module either keeps waking up unnecessarily and drains the battery, or it cannot distinguish a real wake event from the stuck low level.
Affected components
- Wake up circuit
- Control module
Common causes
- High likelihood: Wake-up wire shorted to ground
- Medium likelihood: Door, hood or terminal switch stuck closed
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.