Powertrain, generic (extended)

P26ED Engine Sound Control B Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P26ED concerns the second sound actuator and indicates a drive line pulled toward ground. A conductor rubbed bare on the exhaust bracket, a pinched loom or corrosion bridging the pins of a wet plug are the classic culprits, along with a shorted coil inside the actuator. No maker publishes this code or its limits; the A counterpart P26DC appears in Ford's 2014 code list, which is the closest reference. Where the second flap sits on the other exhaust branch, its wiring often takes a different route under the car than circuit A, so the A side being healthy says little about B. In everyday use the sound feature loses part of its effect, while engine power is not affected.

Likely causes

Insulation of the actuator B wire worn through against metal
Corroded or wet connector at actuator B
Short circuit inside actuator B

Symptoms

  • Check engine light
  • Second flap does not respond, sound only partly changes

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–700
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

sound actuatorexhaust sound valvewiring harness

Related codes

P26ECP26EEP26EFP26DCP2BF9

References: law.cornell.edu, performanceparts.ford.com.