Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3
The voltage of EGT sensor 3 on bank 1 is above the calibrated maximum. Often a sign of an open sensor circuit or a short to supply voltage.
Affected components
- Exhaust gas temperature sensor
- Egt wiring
Common causes
- High likelihood: Open sensor circuit
- Medium likelihood: Signal shorted to supply
- 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.