Engine-Codes - GMC - U185B GMC

U185B GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 On High Voltage Energy Management CAN Bus

- Code Popularity: 442 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC U185B GMC?

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 Hybrid/EV Powertrain Control Module 2
  • Hybrid/EV Powertrain Control Module 2 harness is open or shorted
  • Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection
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How to Fix the DTC U185B GMC?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the U185B GMC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the U185B GMC Code Mean?

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module 2 on high voltage energy management high-speed General Motor Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module 2. If this message is not received within 1 s, this Diagnostic Trouble Code (DTC) is set.

U185B GMC Code - Battery Energy Control Module Lost Communication With Hybrid/EV Powertrain Control Module 2 On High Voltage Energy Management CAN Bus

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