What are the common causes of P2DA9?

Converter module A switch A reading out of range. A failed switch A in the converter. High resistance in the switch A circuit. A faulty converter gate driver. Converter module A overheating.

Scan converter module A for other codes. Monitor switch A switching on a scope. Test the switch A circuit resistance. Check the converter module A temperature. Replace converter module A if switch A stays skewed. Clear the code and retest.

P2DA9

DC/AC Converter Control Module A Switch A Circuit Range/Performance

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P2DA9 means DC/AC Converter Control Module A Switch A Circuit Range/Performance.

Where it lives

For P2DA9, start at the module the description names.

Check these first

Converter module A switch A reading out of range
A failed switch A in the converter
High resistance in the switch A circuit
A faulty converter gate driver
Converter module A overheating

What to do next

Scan converter module A for other codes
Monitor switch A switching on a scope
Test the switch A circuit resistance
Check the converter module A temperature
Replace converter module A if switch A stays skewed
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.