Chevrolet P1AEC: Drive Motor 1 Control Module Hybrid/EV Battery System Voltage

Is your scanner showing Chevrolet P1AEC?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chevrolet P1AEC: Drive Motor 1 Control Module Hybrid/EV Battery System Voltage

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Advanced
Repair Cost
:
$500-$3500
Can I Still Drive?
:
No

What Does The Chevrolet P1AEC Code Mean?

The hybrid/EV battery system contactor relays are closed. Ignition voltage is 8 V and no more than 18 V.

  • A difference of more than 40 V on the high voltage circuit is detected between the hybrid powertrain control module and the hybrid powertrain control module 2.
  • A difference of more than 50 V on the high voltage circuit is detected between the motor control module and the hybrid powertrain control module 2.

What Are The Potential Causes Of The Chevrolet P1AEC Code?

  • A difference of more than 40 V on the high voltage circuit is detected between the hybrid powertrain control module and the hybrid powertrain control module 2.
  • A difference of more than 50 V on the high voltage circuit is detected between the motor control module and the hybrid powertrain control module 2.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts Battery Energy Control Module (Programming Required By Automotive Professional)

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 678.

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