P26FE — Exhaust Flow Control Valve A Control Performance
The exhaust flow control valve A responds to commands but the resulting flow or back-pressure does not match expectations. Worn flap or carbon coking on the bore.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Exhaust flow valve a
- Actuator
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Worn valve flap loses sealing
- Carbon coking restricts valve travel
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.