P1A91 - 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty 14 Volt Power Module
  • 14 Volt Power Module harness is open or shorted
  • 14 Volt Power Module circuit poor electrical connection

Possible symptoms

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

P1a91 Description

The 14V Power Module also called the accessory DC power control module, constantly monitors system temperature to protect against overheat conditions. The module also monitors the function of the temperature sensors. These sensors are internal to the 14 V power module and are not serviced separately from the control module.
OBDII Code P1a91 - 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage - AutoCodes.com

P1A91 Information for specific makes

  • P1A91 BUICK 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage
  • P1A91 CADILLAC 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage
  • P1A91 CHEVROLET 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage
  • P1A91 GMC 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage
  • P1A91 SATURN 14 Volt Power Module Temperature Sensor 1 Circuit Low Voltage

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P1A91 Comments

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