Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3
The voltage from EGT sensor 3 on bank 1 is below the calibrated minimum. The signal indicates either a short to ground or a sensor returning impossibly low temperature.
Affected components
- Exhaust gas temperature sensor
- Egt wiring
Common causes
- High likelihood: Signal shorted to ground
- Medium likelihood: Internal sensor short
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.