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Engine-Codes – Generic – B1220

B1220 Code - Short In The Recirculation Control Motor Circuit

Quick Answer

The B1220 diagnostic trouble code indicates a short in the recirculation control motor circuit. Common causes include Faulty recirculation control motor, Damaged or corroded wiring in the circuit, Blown fuse related to the HVAC system. 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
B1220 indicates Short In The Recirculation Control Motor Circuit.
Common causes
Common causes include Faulty recirculation control motor, Damaged or corroded wiring in the circuit, Blown fuse related to the HVAC system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B1220 Description

The B1220 diagnostic trouble code indicates a short in the recirculation control motor circuit. This code is typically associated with the HVAC (Heating, Ventilation, and Air Conditioning) system in a vehicle. The recirculation control motor is responsible for controlling the flow of air inside the vehicle. When a short is detected in the circuit, it can disrupt the operation of the motor, leading to issues with the air circulation and temperature control inside the cabin.

OBDII Code B1220 - Short In The Recirculation Control Motor Circuit
B1220 Code - Short In The Recirculation Control Motor Circuit

Common Causes of B1220

  1. Faulty recirculation control motor
  2. Damaged or corroded wiring in the circuit
  3. Blown fuse related to the HVAC system
  4. Malfunctioning control module
  5. Water damage or corrosion in the HVAC system components

Symptoms of B1220

  1. Inconsistent airflow from the vents
  2. Inability to switch between fresh air and recirculated air modes
  3. Unusual noises coming from the HVAC system
  4. Air conditioning or heating not working as expected
  5. Dashboard warning light related to the HVAC system

How to Fix B1220

  1. Begin by conducting a thorough inspection of the HVAC system, focusing on the recirculation control motor circuit.
  2. Use a multimeter to test the continuity of the wiring and check for any shorts in the circuit.
  3. Inspect the recirculation control motor for signs of damage or malfunction. Replace if necessary.
  4. Check and replace any blown fuses related to the HVAC system.
  5. Reset the HVAC control module and clear the trouble code from the vehicle's computer.

Cost to Fix B1220

The cost of repairing a short in the recirculation control motor circuit can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the repair cost for this issue can range from $150 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to obtain a detailed estimate from a trusted technician before proceeding with the repair.

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Code B1220 Information for Specific Makes

  • B1220 Acura — Short In The Recirculation Control Motor Circuit
  • B1220 Honda — Short In The Recirculation Control Motor Circuit
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1220 Code

1. What does the OBDII code B1220 mean?

The B1220 code indicates a short circuit in the recirculation control motor circuit, which controls the air recirculation function in the HVAC system.

2. What are the common symptoms of code B1220?

Symptoms may include the inability to switch between recirculated and fresh air, reduced HVAC performance, and possibly unusual noises from the HVAC system.

3. What causes the B1220 code to be triggered?

Common causes include damaged wiring, a faulty recirculation control motor, a short circuit, or a malfunctioning HVAC control module.

4. Can I still drive my car with the B1220 code?

Yes, you can still drive your car, but the HVAC system may not function properly, potentially affecting cabin comfort.

5. How do I diagnose the B1220 code?

Diagnosis involves inspecting the wiring and connectors for damage, testing the recirculation control motor for functionality, and checking the HVAC control module for faults.

6. How do I fix the B1220 code?

Repairs may include repairing or replacing damaged wiring, replacing the recirculation control motor, or addressing faults in the HVAC control module.

7. How much does it cost to repair code B1220?

Repair costs can vary but typically range from $100 to $300, depending on whether wiring repairs or a motor replacement is required.

8. Can I fix the B1220 code myself?

If you have experience with automotive electrical systems, you may be able to repair damaged wiring or replace the motor yourself. Otherwise, it's best to consult a professional.

9. What tools are needed to diagnose or repair code B1220?

You may need a multimeter, a scan tool, and basic hand tools to diagnose and repair the issue.

10. Will clearing the code B1220 with a scan tool fix the problem?

Clearing the code will temporarily remove it, but the underlying issue must be addressed to prevent the code from returning.

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