P2471
Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
EGT sensor 3 on bank 1 reports values that are not plausible for current operating conditions. Either drift or wiring resistance changes the signal away from the expected value.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- EGT sensor driftCommon
- Increased wiring resistancePossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Exhaust Gas Temperature Sensor
- Egt Wiring
P2471 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.