P260APTO Control Circuit/Open
- Generic OBD-II code · Powertrain
- How the car detects it
- P260A reports an open circuit in the output a control module uses to engage the power take-off, typically the coil circuit of a PTO relay or engagement solenoid. GM's PTO module on 2008-2014 Silverado/Sierra 3500 HD chassis cabs, described in upfitter bulletin UI 80c, switches both the supply and the ground side of an upfitter-installed relay and refuses PTO operation unless both lines are connected; GM also notes that the relay output is disabled from the factory and must be programmed on. GM's PTO code table lists the low and high faults of this relay output, but not P260A, so no manufacturer documents this exact code publicly. CARB defines a PTO unit as engine-driven equipment for bodies such as dump beds or winches. The PTO stays disengaged, while normal driving is unaffected.
- What you may notice
- PTO does not engage
- PTO indicator flashes or stays off
- Likely causes
- LikelyRelay coil wiring missing, broken or only one side connected by the upfitter
- PossibleOpen coil in the PTO relay or engagement solenoid
- PossibleCorroded or loose connector in the chassis wiring
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.