Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
The transmission fluid pressure sensor/switch B reports a circuit range/performance fault. Hydraulic pressure feedback for shift control is unreliable on this channel.
Affected components
- Tfp sensor b
- Wiring harness
- Tcm
Common causes
- High likelihood: Sensor offset drifted
- Medium likelihood: Aerated fluid affects pressure
- Low likelihood: Sensor element aged beyond calibration window
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
- Reduced-power or limp mode may occur
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.