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P1A8D Code - 14 Volt Power Module Voltage Sensor Circuit Low Voltage

- Code Popularity: 8,693 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1A8D?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty 14 Volt Power Module Voltage Sensor
  • 14 Volt Power Module Voltage Sensor harness is open or shorted
  • 14 Volt Power Module Voltage Sensor circuit poor electrical connection
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How to Fix the DTC P1A8D?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1A8D code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1A8D Description

The Auxiliary Power Module (APM) 12-volt output voltage is used for a 12-volt line APM output voltage control and a 12-volt line voltage sensor rationality check. The Starter/Generator Control Module (SGCM) monitors the voltage sensor for the following:
To detect the failure of the APM 12-volt voltage sensor circuit below valid range.
To detect the failure of the APM 12-volt voltage sensor circuit above valid range.

OBDII Code P1A8D - 14 Volt Power Module Voltage Sensor Circuit Low Voltage - AutoCodes.com
P1A8D Code - 14 Volt Power Module Voltage Sensor Circuit Low Voltage

Need More Information on the Code?

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Information for Specific Makes

  • P1A8D Buick 14 Volt Power Module Voltage Sensor Circuit Low Voltage
  • P1A8D Cadillac 14 Volt Power Module Voltage Sensor Circuit Low Voltage
  • P1A8D Chevrolet 14 Volt Power Module Voltage Sensor Circuit Low Voltage
  • P1A8D GMC 14 Volt Power Module Voltage Sensor Circuit Low Voltage
  • P1A8D Saturn 14 Volt Power Module Voltage Sensor Circuit Low Voltage

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Code P1A8D comments

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