What are the common causes of P0D09?

An open in the positive contactor A control circuit. A failed contactor A coil. Corroded contactor A contacts. A loose contactor A connector. A charging control module fault.

Read positive contactor A state on a scan tool. Command contactor A closed and listen for it. Test the contactor A control circuit for an open. Measure the contactor A coil resistance. Replace contactor A if it does not close. Clear the code and retest.

P0D09

Battery Charging System Positive Contactor A Stuck Open

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

What it means

P0D09 means Battery Charging System Positive Contactor A Stuck Open.

Check these first

An open in the positive contactor A control circuit
A failed contactor A coil
Corroded contactor A contacts
A loose contactor A connector
A charging control module fault

What to do next

Read positive contactor A state on a scan tool
Command contactor A closed and listen for it
Test the contactor A control circuit for an open
Measure the contactor A coil resistance
Replace contactor A if it does not close
Clear the code and retest

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Updated

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