P2DA8DC/AC Converter Control Module A Switch A Circuit
- Generic OBD-II code · Powertrain
- How the car detects it
- DC/AC converter control module A is the inverter that turns direct current from the vehicle battery into household AC for sockets in the vehicle; Ford calls it DCACA and uses it for Pro Power Onboard on the F-150, where TSB 21-2127 handles a related fault, P0364 in the PCM. P2DA8 reports an electrical fault – open, short or no valid signal – in the circuit of switch A of this module. J2012 does not say what switch A is. In Ford's patent US11043801B2 the DCACA controller switches each socket group on and off through relays and can also read a manual button in the bed or cab; comparing voltages ahead of and behind the switch tells it whether the switch works. No manufacturer documents P2DA8 publicly. The affected outlets stay dead; driving is not affected.
- What you may notice
- AC outlets of group A without power
- Message that onboard power is unavailable
- Outlet button without reaction
- Likely causes
- LikelyOpen or shorted wire or corroded connector between switch A and the module
- PossibleSwitch A or its relay failed
- PossibleWater ingress at an outlet panel in the bed or cargo area
- RareInternal fault of the DC/AC converter module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.