B2920 Ford Code - Auxiliary Mode Door Feedback Circuit Open/Shorted
Quick Answer
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. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2920 Ford indicates Auxiliary Mode Door Feedback Circuit Open/Shorted.
- Common causes
- Common causes include 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.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2920 Ford Description
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.
What are the Possible Causes of the DTC B2920 Ford?
- 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)
How to Fix the DTC B2920 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2920 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B2920 Ford Code
1. What are common symptoms of OBDII code B2920 Ford (Auxiliary Mode Door Feedback Circuit Open/Shorted)?
The common symptoms include issues with the HVAC system, such as inconsistent or improper air temperature control, limited airflow, or strange noises coming from the vents.
2. What are the possible causes of OBDII code B2920 Ford?
Possible causes include a damaged or faulty auxiliary mode door actuator, wiring issues in the feedback circuit, a blown fuse, or a malfunctioning HVAC control module.
3. How can I diagnose the Auxiliary Mode Door Feedback Circuit for an open or shorted condition?
You can diagnose the circuit using a multimeter to test for continuity and voltage at various points along the wiring, including the actuator connector and the HVAC control module connector.
4. What are some repair tips for addressing OBDII code B2920 Ford?
Start by checking the fuse related to the HVAC system and inspecting the wiring harness for any visible damage. If necessary, replace the auxiliary mode door actuator or repair any damaged wiring.
5. Can I drive my vehicle with OBDII code B2920 Ford present?
It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to prevent further damage to the HVAC system or potential discomfort while driving.
6. Is it possible to reset OBDII code B2920 Ford without repairs?
Resetting the code without addressing the underlying issue will likely result in the code reappearing once the system detects the fault again. It is best to diagnose and repair the problem to prevent future issues.
7. How much does it typically cost to repair OBDII code B2920 Ford?
The cost of repair can vary depending on the specific cause of the code, the labor rates in your area, and whether you choose to replace the part yourself or have it done by a professional. It's best to get a few quotes from local mechanics for an accurate estimate.
8. Can a DIY enthusiast fix OBDII code B2920 Ford at home?
Depending on the cause of the code and your level of experience with automotive repairs, it may be possible to fix the issue at home. However, some repairs may require specialized tools or knowledge, so it's essential to assess your skills before attempting a DIY repair.
9. How long does it take to repair OBDII code B2920 Ford?
The repair time can vary based on the specific cause of the code and your experience level. In general, a straightforward repair such as replacing a fuse or actuator may take an hour or two, while more complex wiring issues could take longer.
10. Will OBDII code B2920 Ford cause my vehicle to fail an emissions test?
While this code is related to the HVAC system rather than emissions, it's essential to address any stored codes before an emissions test to ensure your vehicle meets the necessary requirements for passing.
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