Powertrain
generic / SAE
P26C6
Exhaust Flow Control Valve A Control Circuit Low
Voltage on the exhaust flow control valve A control line is below 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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / C6
Possible causes
- Control wire shorted to ground high
- Internal short in solenoid coil medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–1200 €
- Estimated time: 0.8–3.5 h
- Component: exhaust flow valve a
- Component: solenoid
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012