Transmission Fluid Pressure Sensor/Switch A Circuit High
The transmission fluid pressure sensor A circuit reports voltage above threshold, indicating short to power or open ground.
Affected components
- Transmission fluid pressure sensor
- Wiring harness
Common causes
- High likelihood: Signal shorted to battery
- Medium likelihood: Open ground reference
- Low likelihood: Connector pins corroded - high contact resistance
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.