P26A2Exhaust Aftertreatment Glow Plug Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- The high case of the exhaust glow plug load circuit is set when the monitored point sits too close to supply voltage. Depending on how the module measures, this means the heater circuit is shorted to another positive feed or the element draws almost no current, so the voltage barely drops across it. The plug then stays cold or cannot be switched off. Public manufacturer data for P26A2 are lacking. The known user of the neighboring glow plug codes, the Ford Transit 3.2 L diesel, reports a high reading on its vaporizer glow plug control circuit as P269E. CARB treats such heaters as output components that must be monitored for circuit faults. Expect a lit MIL and limited particulate filter regeneration until the circuit is repaired.
- What you may notice
- MIL on
- Exhaust dosing and regeneration limited
- Likely causes
- LikelyGlow plug feed shorted to another battery-fed circuit
- PossibleElement with greatly increased resistance near the end of its life
- RareGlow plug relay contacts stuck closed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.