P1A86 – Starter/Generator Control Module Coolant Level Sensor 4 High Voltage

P1A86 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1A86 Possible Causes

Faulty Starter/Generator Control Module (SGCM),Starter/Generator Control Module (SGCM) harness is open or shorted,Starter/Generator Control Module (SGCM) circuit poor electrical connection

P1A86 Description

The Starter/Generator Control Module (SGCM) electronics are immersed in an internal fluid to distribute the heat of the electronics evenly through the SGCM, this electronics internal fluid is not the coolant that is circulated through the SGCM cooling system. The SGCM monitors 4 separate internal fluid level sensors to determine if the electronics internal fluid level is low.