Gear Shift Lock Solenoid/Actuator Control Circuit B Low
The gear shift lock solenoid/actuator control circuit B reports a control circuit b low condition. Selector lever interlock cannot be commanded reliably.
Affected components
- Gear shift lock solenoid b
- Wiring harness
- Tcm
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Internal short in coil
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.