P247B
Exhaust Gas Temperature Out of Range Bank 1 Sensor 4
The EGT sensor at bank 1 sensor 4 reports a value outside its plausible operating range over time - typically a degraded element giving an offset that the substitute logic flags as implausible.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sensor element agedCommon
Parts involved
- Egt Sensor B1s4
P247B 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.