AutoCodes – Chevrolet – B0212 Chevrolet

B0212 Chevrolet Code - Rear Blower Motor Speed Open

Quick Answer

The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. Common causes include Faulty Auxiliary (Rear) Blower Motor, Auxiliary (Rear) Blower Motor harness is open or shorted, Auxiliary (Rear) Blower Motor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0212 Chevrolet indicates Rear Blower Motor Speed Open.
Common causes: Common causes include Faulty Auxiliary (Rear) Blower Motor, Auxiliary (Rear) Blower Motor harness is open or shorted, Auxiliary (Rear) Blower Motor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,094

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0212 Chevrolet Description

The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. The auxiliary blower motor control module has 5 circuits: a B+ input, ground, a control signal from the HVAC module, a B+ output and a low side Pulse Width Modulation (PWM) control to the Auxiliary (Rear) Blower Motor. The HVAC control module provides a low side (PWM) signal to the auxiliary blower motor control module in order to request the auxiliary blower motor speed. The auxiliary blower motor control module grounds the blower motor using a low side PWM signal in order to vary the auxiliary blower motor speed.

OBDII Code B0212 Chevrolet - Rear Blower Motor Speed Open - AutoCodes.com — B0212 Chevrolet Code - Rear Blower Motor Speed Open

What does this mean?

What are the Possible Causes of the DTC B0212 Chevrolet?

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

How to Fix the DTC B0212 Chevrolet?

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 B0212 Chevrolet 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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Need more information on how to fix the B0212 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0212 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 B0212 Chevrolet Code

1. What are the common symptoms of OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

The common symptoms include the rear blower motor not working, lack of airflow from rear vents, and potential issues with rear climate control.

2. What causes the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

This code is typically caused by a malfunction in the rear blower motor speed control circuit, a faulty rear blower motor, or damaged wiring in the rear blower motor system.

3. How can I diagnose the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

Diagnosing this code involves checking the rear blower motor fuse, testing the rear blower motor for proper operation, and inspecting the wiring and connectors in the rear blower motor system.

4. Can I drive my Chevrolet with the OBDII code B0212 (Rear Blower Motor Speed Open)?

It is not recommended to drive your Chevrolet with this code active, as it can lead to discomfort for rear passengers and potential issues with the HVAC system.

5. How can I repair the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

Repairing this code may involve replacing the rear blower motor, repairing or replacing damaged wiring, or addressing any issues with the rear blower motor speed control circuit.

6. Is the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open) a serious issue?

While this code may not affect the overall drivability of the vehicle, it can impact the comfort of rear passengers and should be addressed to ensure proper HVAC system functionality.

7. Are there any DIY tips for fixing the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

If you are familiar with automotive electrical systems, you may be able to troubleshoot the issue by inspecting the rear blower motor and its connections for any visible damage or issues.

8. How much does it cost to repair the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

The cost of repairing this code can vary depending on the specific issue, but it may involve replacing the rear blower motor, which can range from $100 to $300, plus labor costs.

9. Can a mechanic reset the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open)?

A mechanic can diagnose the issue causing the code and reset it after the necessary repairs have been made to ensure the problem is resolved.

10. Will the OBDII code B0212 Chevrolet (Rear Blower Motor Speed Open) turn off on its own?

If the underlying issue causing the code is not resolved, the code will likely persist until the problem is fixed. It is best to address the root cause to turn off the code.