What are the common causes of P0D13?

A short to ground in the negative contactor A control circuit. A failed negative contactor A coil. Corroded pins at the contactor A connector. A low control signal from the module. A partly broken control wire.

Read negative contactor A state on a scan tool. Inspect the contactor A connector and wiring. Test the contactor A control circuit for a short to ground. Measure the contactor A coil resistance. Replace contactor A if the control stays low. Clear the code and retest.

P0D13

Battery Charging System Negative Contactor A Control Circuit Low

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

What it means

P0D13 means Battery Charging System Negative Contactor A Control Circuit Low.

Check these first

A short to ground in the negative contactor A control circuit
A failed negative contactor A coil
Corroded pins at the contactor A connector
A low control signal from the module
A partly broken control wire

What to do next

Read negative contactor A state on a scan tool
Inspect the contactor A connector and wiring
Test the contactor A control circuit for a short to ground
Measure the contactor A coil resistance
Replace contactor A if the control stays low
Clear the code and retest

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Updated

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