AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Generic - B2920

B2920 Code - Auxiliary Mode Door Feedback Circuit Open/Shorted

- Code Popularity: 686 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC B2920?

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 Auxiliary Temperature Mode Door Actuator
  • Auxiliary Temperature Mode Door Actuator harness is open or shorted
  • Auxiliary Temperature Mode Door Actuator circuit poor electrical connection
  • Faulty Smart Junction Box (SJB)
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC B2920?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for B2920 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2920 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B2920 Description

Under normal operation, to rotate the auxiliary temperature blend door actuator clockwise, the Smart Junction Box (SJB) supplies voltage to the auxiliary temperature blend door actuator motors through the circuit and supplies ground through the circuit. To rotate the auxiliary temperature blend door actuator counterclockwise, the SJB reverses the voltage and ground circuits.
The auxiliary temperature blend door actuator feedback resistor is supplied a ground from the SJB through the circuit and a 5-volt reference voltage on a circuit. The SJB reads the voltage on the auxiliary temperature blend door actuator feedback circuit to determine the auxiliary temperature blend door actuator position by the position of the actuator feedback resistor wiper arm.

OBDII Code B2920 - Auxiliary Mode Door Feedback Circuit Open/Shorted - AutoCodes.com
B2920 Code - Auxiliary Mode Door Feedback Circuit Open/Shorted

Need More Information on the Code?

Need more information on how to fix the B2920 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • B2920 Ford Auxiliary Mode Door Feedback Circuit Open/Shorted
  • B2920 Lincoln Auxiliary Mode Door Feedback Circuit Open/Shorted
  • B2920 Mercury Auxiliary Mode Door Feedback Circuit Open/Shorted

Need Help with the Code?

Get the B2920 code diagnosed by a professional: Find a repair shop in your area

Code B2920 comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B2920 code? Have you replaced any parts?
Any information is appreciated. Thanks