OBD-II code · Powertrain (generic, extended)
P26E9 Actuator Supply Voltage D Circuit High
The fourth actuator supply rail is above the expected voltage. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P26E9?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossibleAlternator regulator failure
- Less likelyWiring shorted to a higher-voltage circuit
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Actuator Supply D, Charging System
Related codes
- P0659Actuator Supply Voltage A Circuit High
- P2671Actuator Supply Voltage B Circuit High
- P2686Actuator Supply Voltage C Circuit High
- P26E6Starter Relay B Circuit High
- P26E7Actuator Supply Voltage D Circuit / Open
- P26E8Actuator Supply Voltage D Circuit Low
- P26EAFuel Pump Control Module B
- P26EBAlternative Fuel Control Module System Voltage
- P26ECEngine Sound Control B Circuit / Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.