P1A81 - Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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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

Tech notes

If the vehicle is on an extreme angle this code may set.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1a81 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.
OBDII Code P1a81 - Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage - AutoCodes.com

P1A81 Information for specific makes

  • P1A81 BUICK Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage
  • P1A81 CADILLAC Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage
  • P1A81 CHEVROLET Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage
  • P1A81 GMC Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage
  • P1A81 SATURN Starter/Generator Control Module Coolant Level Sensor 2 Low Voltage

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Related Information

P1A81 Comments

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