Fault Family System: Powertrain (P-Codes) 8 SAE Codes

DC AC Converter Control Module Circuit

Diagnostic & Technical Explanation

Code P0364 (DC/AC Converter Control Module Control Circuit Range/Performance) applies to hybrid and EV platforms and sets when the ECM/hybrid control module detects an out-of-range signal or performance fault while communicating with or commanding the DC/AC converter (inverter) control module that converts high-voltage DC battery power to AC for the drive motor(s) or accessory outlets. Causes are a degraded high-voltage interlock connection, a corroded or unseated low-voltage control connector at the converter module, or an internal converter module fault requiring specialist replacement.

These 8 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 8 times.

Codes in this family (8)

Code	Definition	Repair coverage
P0364	DC/AC Converter Control Module Control Circuit Range/Performance	4 ranked fixes
P2DA8	DC/AC Converter Control Module A Switch A Circuit	4 ranked fixes
P2DA9	DC/AC Converter Control Module A Switch A Circuit Range/Performance	4 ranked fixes
P2DAA	DC/AC Converter Control Module A Switch B Circuit	4 ranked fixes
P2DAB	DC/AC Converter Control Module A Switch B Circuit Range/Performance	4 ranked fixes
P2EA7	DC/AC Converter A Input Voltage Too Low	4 ranked fixes
P2EA8	DC/AC Converter A Input Voltage Too High	4 ranked fixes
P2EA9	DC/AC Converter A Over Temperature	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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