P26A1 Possible Causes
- Faulty exhaust aftertreatment glow plug
- Exhaust aftertreatment glow plug circuit open or shorted
- Poor electrical connection in exhaust aftertreatment glow plug circuit
How to Fix Code P26A1
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P26A1 Meaning
The Powertrain Control Module (PCM) monitors the exhaust aftertreatment glow plug control circuit. The PCM sets the OBDII code when the exhaust aftertreatment glow plug control circuit falls outside factory specifications.