OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P262F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossibleHigh-resistance ground for the reference rail
- PossibleOne sensor draws excessive current and shifts the rail
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Control Module, Reference Voltage Rail, Sensors On Rail G
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.