OBDII Code List

P0AC4 CHEVROLET - Hybrid Powertrain Control Module Requested MIL Illumination

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0AC4 CHEVROLET Possible Causes

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

First diagnose P0AC4 CHEVROLET code

    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 terminals.


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 CHEVROLET code

    Labor: 1.0

    The cost of diagnosing the P0AC4 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P0AC4 CHEVROLET Possible Symptoms

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

P0ac4 Chevrolet Description

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.
OBDII Code P0ac4 Chevrolet - Hybrid Powertrain Control Module Requested MIL Illumination -

P0AC4 CHEVROLET More Information

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