P2473
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.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Open sensor circuitCommon
- Signal shorted to supplyPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Exhaust Gas Temperature Sensor
- Egt Wiring
P2473 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.