Hybrid/EV Powertrain Control Module A

Where it lives

For P0A1D, the part to look at first is the module named here.

Check these first

• A hybrid powertrain control module A that is failing
• Corrosion at the module connectors
• Short or open in the module wiring
• A network communication fault
• A module software fault

What to do next

1. Read hybrid powertrain control module A data on a scan tool
2. Check for network and communication codes
3. Inspect the module connectors
4. Test the module wiring
5. Replace the module if it does not communicate
6. Clear the code and retest

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