Transmission Fluid Temperature Sensor Circuit Low
ATF temperature sensor signal voltage below the lower threshold — open, short to ground, or sensor fault.
Affected components
- Transmission temperature sensor
- Sensor wiring
Common causes
- High likelihood: Transmission temperature sensor failed
- Medium likelihood: Wiring or connector fault
- 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
- Reduced-power or limp mode may occur
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.