U3022Ignition Input Accessory/Off
- Generic OBD-II code · Network
- How the car detects it
- U3022 is the last of the ignition input codes and, by its name, covers a line or line state that belongs to Accessory and Off together, i.e. to all positions in which the engine is not meant to run. GM's 2012 pickup wiring manual has a comparable case: its coded Off/Run/Crank circuit shows one common state for key out and for accessory, separate from key in, run and crank. A module that sees this accessory/off state while the network reports run or crank, or the opposite with the vehicle parked, logs U3022. No manufacturer documents U3022 publicly. In practice the code is less about a single dead wire than about two signals disagreeing, so stored codes for U300C, U300F or U3011 in the same module are useful hints as to which circuit is wrong.
- What you may notice
- Accessory functions behaving wrongly for the key position
- Stored together with other ignition input codes in the same module
- Likely causes
- PossibleContact resistance in the ignition switch giving an in-between level
- PossibleInput wire open, shorted or backfed
- RareBody control module broadcasting a wrong power mode
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.