OBD-II code · Powertrain (generic, extended)
P262D Sensor Reference Voltage G Circuit Low
The 5 V reference G voltage is below the expected level. Usually a short to ground or excessive load from a downstream sensor pulling the rail down.
Is it safe to drive with P262D?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyReference wire shorted to ground
- PossibleSensor on the rail shorted internally to ground
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Control Module, Reference Voltage Rail, Sensors On Rail G
Related codes
- P0652Sensor Reference Voltage B Circuit Low
- P0698Sensor Reference Voltage C Circuit Low
- P06A4Sensor Reference Voltage D Circuit Low
- P06D3Sensor Reference Voltage E Circuit Low
- P06D7Sensor Reference Voltage F Circuit Low
- P262AFuel Injector - Pilot Injection Not Learned
- P262BControl Module Power Off Timer Performance
- P262CSensor Reference Voltage G Circuit / Open
- P262ESensor Reference Voltage G Circuit High
- P262FSensor Reference Voltage G Circuit Range/Performance
- P2630O2 Sensor Pumping Current Trim Circuit Low Bank 2 Sensor 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.