DC/AC Converter Control Module Control Circuit Range/Performance
What it means
P0364 is a hybrid/electric-vehicle code meaning the control circuit for the DC/AC converter — the inverter that turns high-voltage battery DC into AC for the drive motor — is reading outside its expected range. It points to a fault in that converter's control circuit or module rather than the engine, and the exact behaviour and repair are very vehicle-specific.
Can I keep driving? Treat with caution — this is a high-voltage hybrid/EV fault that can drop the car into reduced power or stop it moving; have it diagnosed by a hybrid-qualified technician and don't work on the high-voltage system yourself.
Common symptoms
What you'll notice
- Check-engine or hybrid-system warning light on
- Reduced drive power or limp-home mode
- Vehicle may not enter Ready/Drive
- Hybrid/EV service message on the dash
Common causes
Most likely first
- Wiring or connector fault in the converter control circuitLikely
- Fault within the DC/AC converter (inverter) or its control moduleCommon
- Poor connections on the converter control sideCommon
- Control-module or software faultLess often
How to diagnose & fix
Work through it in order
- Have a hybrid/EV-qualified technician diagnose using the factory procedure — the high-voltage system is dangerous to probe.
- Scan for related hybrid/high-voltage codes to see the wider picture.
- Inspect the converter control-circuit wiring and connectors for damage.
- Test the DC/AC converter (inverter) and its control module per the manufacturer's tests.
- Repair the circuit or replace the converter/module as the factory procedure directs, then clear and re-test with proper equipment.
FAQ
Quick answers
Is it safe to drive with P0364?+
Can I just clear P0364?+
Related codes
Often seen with P0364
Read & clear P0364 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.