Transmission Fluid Pressure Sensor/Switch G Circuit
General electrical fault on the seventh transmission fluid pressure sensor/switch G circuit. Heavy-duty and 8/9/10-speed transmissions can have multiple pressure sensors monitoring different hydraulic circuits — sensor G is the seventh in line.
Affected components
- Transmission pressure sensor g
- Sensor wiring
Common causes
- High likelihood: Open or shorted wiring
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
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.