P262CSensor Reference Voltage G Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Engine modules supply groups of sensors from separately regulated 5 V outputs, lettered A, B, C and so on; G is the seventh such supply. P262C is the general fault of this output, typically an interruption so that the sensors behind it lose their feed and report signals near zero together. No manufacturer documents P262C publicly, and which sensors hang on circuit G depends entirely on the application. Comparable checks exist for earlier letters: GM monitors its fifth reference with a single collective code (P06D2) and a window of 4.875-5.125 V, type A; Ford checks reference A for shorts to earth or to the battery, with a 5 s debounce. CARB treats such outputs as monitored comprehensive components. Low, high and plausibility faults of circuit G are P262D, P262E and P262F.
- What you may notice
- Check engine light
- Several sensor codes appearing at the same time
- Reduced power or limp mode depending on the affected sensors
- Likely causes
- LikelyBroken reference wire or splice feeding the sensors of circuit G
- PossibleLoose or corroded pin at the engine module or a sensor plug
- RareInternal regulator of the engine module for output G failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.