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P1A98 Code - Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage

- Code Popularity: 1,067 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1A98?

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 Starter/Generator Control Module (SGCM)
  • Starter/Generator Control Module (SGCM) harness is open or shorted
  • Starter/Generator Control Module (SGCM) circuit poor electrical connection
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How to Fix the DTC P1A98?

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 P1A98 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 P1A98 Description

The purpose of the Accessory Power Module (APM), integral to the Starter/Generator Control Module (SGCM), is to control the amount and direction of energy flowing between the 42 volts DC and 14 volts DC buses via the APM, bi-directional 42 volts DC to 14 volts DC converter. All APM functions shall only be run when in the enable mode. APM current shall be defined as the current flowing through the outputs. The current shall be bi-directional, with negative current representing 14-42 volts direction, and positive current representing the 42-14 volts direction.
The Starter/Generator Control Module (SGCM) controls 2 functions in these DTCs. DC voltage is transformed into three phase AC power to the electric machine interface. In this case, energy flows from 36 volt to phase1, phase2 and phase3. The second case shall be generating, where the three phase AC power is used to charge the 36 volt battery pack. In this case, energy flows from phase1, phase2 and phase3 to 36 volts.

OBDII Code P1A98 - Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage - AutoCodes.com
P1A98 Code - Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage

Need More Information on the Code?

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Information for Specific Makes

  • P1A98 Buick Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage
  • P1A98 Cadillac Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage
  • P1A98 Chevrolet Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage
  • P1A98 GMC Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage
  • P1A98 Saturn Starter/Generator Control Module Hybrid Battery Voltage Sensor Circuit High Voltage

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