What are the common causes of P0AF7?

Blocked vents that keep air from the 14 volt power module. A failed cooling fan for the power module. High current draw overloading the power module. Corroded power module connections.

Read the 14 volt power module temperature on a scan tool. Check the module vents for a blockage. Test the module cooling fan. Check for excess current draw on the module. Inspect the module connections for corrosion. Clear the code and retest.

P0AF7

14 Volt Power Module Internal Temperature Too High

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

What it means

P0AF7 means 14 Volt Power Module Internal Temperature Too High.

Where it lives

For P0AF7, start at the module the description names.

Check these first

Blocked vents that keep air from the 14 volt power module
A failed cooling fan for the power module
High current draw overloading the power module
Corroded power module connections

What to do next

Read the 14 volt power module temperature on a scan tool
Check the module vents for a blockage
Test the module cooling fan
Check for excess current draw on the module
Inspect the module connections for corrosion
Clear the code and retest

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Updated

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