What are the common causes of P2DAB?

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

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

P2DAB

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

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

What it means

P2DAB means DC/AC Converter Control Module A Switch B Circuit Range/Performance.

Where it lives

For P2DAB, the description names the module as the part involved.

Check these first

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

What to do next

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

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Updated

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