Powertrain, generic · Ignition system or misfire

P0364 DC/AC Converter Control Module Control Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0364 reports that the control circuit between the engine module and the control module of a DC/AC converter (inverter) behaves implausibly – the command or enable line is present but its signal does not fit what the engine module expects. The code is a late assignment in the P03xx block; the other DC/AC converter codes sit in the P2DAx range (P2DA8–P2DAB). Ford uses it on the 2021 F-150. On the 3.5 L PowerBoost hybrid, whose DC/AC converter module A feeds the Pro Power Onboard sockets, bulletin 21-2229 links P0364 in the PCM to a disabled Pro Power Onboard and a 'Pro Power Onboard Service Required' message; the cause was software parameters in the inverter and the PCM, fixed by reprogramming both. Bulletin 21-2087 lists P0364 among the codes that 3.5 L EcoBoost trucks built up to 2 March 2021 stored with the MIL on, cured by a PCM update alone. Without such a bulletin, check the enable and command wiring between PCM and inverter and the software levels of both modules.

Likely causes

Control or enable line to the converter module disturbed (connector, wiring)
Converter control module faulty internally
Software of the modules involved

Symptoms

  • Warning lamp depending on the manufacturer
  • Converter function restricted (for example power socket or hybrid drive)

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–2,000
Time1–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

dc ac converter control modulemodule wiringengine control module

Related codes

P2DA8P2DA9P2DAAP2DAB

References: static.nhtsa.gov, static.nhtsa.gov, law.cornell.edu.