Exhaust Gas Temperature Sensor Bank 1 Sensor 1 Low
The exhaust gas temperature sensor signal at bank 1, sensor 1 is below the lower diagnostic threshold. Indicates short to ground or sensor fault.
Affected components
- Exhaust gas temp sensor
- Sensor wiring
Common causes
- High likelihood: EGT sensor internally faulty
- Medium likelihood: Signal wire shorted to ground
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.