Turbocharger/Supercharger B Temperature Sensor Circuit Low
The ECM detects a circuit low fault on the turbocharger/supercharger b temperature sensor. Reading cannot be used reliably for control.
Affected components
- Turbocharger b temperature sensor
- Wiring harness
- Ecm
Common causes
- High likelihood: Signal wire shorted to ground
- Medium likelihood: Internal sensor short
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.