OBD-II code · Powertrain (generic, extended)
P26DF Sensor Power Supply D Circuit / Open
The 5 V supply rail D for sensors is open. All sensors fed from this rail report invalid readings.
Is it safe to drive with P26DF?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen wire on the supply rail
- PossibleOpen inside the ECU regulator output
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, Sensor Supply D, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.