Transmission Fluid Temperature Sensor B Circuit Intermittent
The second transmission fluid temperature sensor signal jumps or drops out intermittently. Loose connector or chafed wire.
Affected components
- Trans fluid temp sensor b
- Wiring harness
Common causes
- High likelihood: Sensor connector not fully seated
- Medium likelihood: Harness chafed against transmission housing
- Low likelihood: Connector with intermittent contact under vibration
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.