Dtc p0111 p2509

[wyatt1672]

Check engine light came on with DTC 0111 and P2509. Truck seems to run the same but pre heater runs longer even when truck is warmed up. What do think is broken?

 

[cerberusiam]

P0111 Intake Air Temp Sens Perf

That would cause grid heaters to run longer. The IAT is part of the dual function MAP sensor.

P2509 is power signal to ECU lost or intermittent. If you have pulled the cable at some point it mak not have cleared. Otherwise, time to start checking batteries, connections, etc.