P269AExhaust Aftertreatment Fuel Injector A Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The high variant of the exhaust doser circuit means the control line shows supply voltage where the driver expects it to be pulled down, typically a short to battery positive or a driver that no longer conducts. In that state the valve cannot be opened, and a hard short can also overload the output, which the controller then switches off for protection. Volvo and Mack name P269A with failure type 00 first in the electrical fault table of the same AHI guide, with the same instruction as for its siblings: inspect the dosing module connection and wiring before replacing the module. Warranty only covers a new module when one of the listed module codes is active or confirmed. Without dosing the truck relies on passive regeneration and soot accumulates.
- What you may notice
- MIL on, regeneration requests fail
- Filter soot level climbs over time
- Derate in later stages
- Likely causes
- LikelyDoser control wire shorted to a positive supply
- PossibleOutput stage in the controller not switching
- RarePin damage in the dosing module connector
- 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: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.