OBD-II code · Powertrain (generic, extended)
P26C7 Exhaust Flow Control Valve A Control Circuit High
Voltage on the exhaust flow control valve A control line is above the expected window. The exhaust control valve modulates exhaust backpressure or routing (EGR feed, sound, regen support); a malfunction shifts torque mapping and may trigger limp mode.
Is it safe to drive with P26C7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen solenoid coil
- Less likelyConnector pins corroded - high contact resistance
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
- Exhaust Flow Valve A, Solenoid, Wiring Harness
Related codes
- P2BFAExhaust Flow Control Valve B Control Circuit High
- P2D15Exhaust Flow Control Valve C Control Circuit High
- P26C4Internal Control Module Clutch Pedal Performance
- P26C5Exhaust Flow Control Valve A Control Circuit / Open
- P26C6Exhaust Flow Control Valve A Control Circuit Low
- P26C8Chassis Control Module 1 Requested MIL Illumination
- P26C9Chassis Control Module 2 Requested MIL Illumination
- P26CAEngine Coolant Pump Control Circuit / Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.