Engine-Codes - Buick - P0AC4 BUICK

P0AC4 BUICK - Hybrid Powertrain Control Module Requested MIL Illumination

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0AC4 BUICK Possible Causes

  • Faulty Hybrid Powertrain Control Module
  • Hybrid Powertrain Control Module harness is open or shorted
  • Hybrid Powertrain Control Module circuit poor electrical connection

How do I fix code P0AC4 BUICK?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

The P0AC4 code is an information code only, if there are no other engine codes, then the Hybrid Powertrain Control Module needs to be diagnose.

Cost of diagnosing the P0AC4 BUICK code

Labor: 1.0

The cost of diagnosing the P0AC4 BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P0AC4 BUICK Meaning

The P0AC4 code indicates the Hybrid Powertrain Control Module has set an emission related hybrid powetrain code.The Hybrid Powertrain Control Module sends a message via serial data circuit to the Engine Control Module (ECM) requesting illumination of the Malfunction Indicator Light (MIL). When the ECM receives the message, the code P0AC4 code will set. The P0AC4 code information for the ECM will only display the P0AC4 code,but freeze frame/failure records data may display the hybrid powertrain code that sets.

P0AC4 BUICK More Information

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