P262F
Sensor Reference Voltage G Circuit Range/Performance
The 5 V reference G voltage is within range but unstable or offset against expected. Loose ground or marginal regulator load.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- High-resistance ground for the reference railPossible
- One sensor draws excessive current and shifts the railPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Control Module
- Reference Voltage Rail
- Sensors On Rail G
P262F 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.