Chevrolet P1B2D: Hybrid/EV Battery 32 Circuit

What Does The Chevrolet P1B2D Code Mean?

This DTC is set when voltage is detected below threshold.

Conditions for setting the DTC:

• The battery energy control module is awake and communicating.
• Vehicle speed is greater than 0.
• There is a change in the Voltage and Current readings.

What Are The Potential Causes Of The Chevrolet P1B2D Code?

• Battery Circuit: The battery energy control module detects high resistance on the circuit.
• Circuit Performance: The faulted cell group does not change voltage.
• Low Voltage: Any hybrid/EV battery voltage signal is less than 0.2 V.
• High Voltage: Any hybrid/EV battery voltage signal is greater than 4.8 V.

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 625.
• GM, 2018, Service Bullettin – Malfunction Indicator Lamp Illuminated and/or Intermittent No Start with Battery Circuit
  DTCs Set.