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AutoCodes - Generic - U2127

U2127 Code - Lost Communication With Front HVAC Control Module

- Code Popularity: 1,354 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 16, 2020
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|U2127 code possible causes

  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module
  • HVAC Control Module harness is open or shorted
  • HVAC Control Module circuit poor electrical connection

|How do I fix code U2127 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 connector's pins.

Does your car have Safety Recalls? → Check here

|Cost of diagnosing U2127 code

Labor: 1.0

The cost of diagnosing the U2127 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.

|What are U2127 code possible symptoms?

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

|U2127 code description

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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code u2127 - Lost Communication With Front HVAC Control Module - AutoCodes.com
U2127 Code - Lost Communication With Front HVAC Control Module

|Need more information with the U2127 code?

Need more information on how to fix the U2127 code? Get Access to Factory Service Manuals

|Information for specific makes

  • U2127 BUICK Lost Communication With Front HVAC Control Module
  • U2127 CADILLAC Lost Communication With Front HVAC Control Module
  • U2127 CHEVROLET Lost Communication With Front HVAC Control Module
  • U2127 GMC Lost Communication With Front HVAC Control Module
  • U2127 SATURN Lost Communication With Front HVAC Control Module

|Need help with a U2127 code?

Get the u2127 code diagnosed by a professional: Find a repair shop in your area

|U2127 code comments

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