P26ECEngine Sound Control B Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Where a vehicle has two sound actuators, for instance one flap per tailpipe side or a valve in addition to an intake sound tube, B designates the second one. P26EC is stored when its drive circuit is broken, so switching the output produces no current. No manufacturer documents P26EC or the rest of the B row in public; information exists only for circuit A, such as Nissan's GT-R muffler valve, and for related exhaust valve drivers that Ford checks for open circuits over 5 seconds. Which physical part is B therefore has to come from the wiring diagram of the specific car. CARB treats outputs like this as monitored components where emissions can be affected. Expect the second valve to stay inactive while the engine runs normally.
- What you may notice
- Check engine light, depending on the manufacturer
- Sound changes only on one side or not at all
- Likely causes
- LikelyConnector of the second actuator loose or disconnected
- PossibleWire to actuator B broken, for example by heat or vibration
- PossibleOpen winding inside actuator B
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.