AutoCodes – Buick – B0208 Buick

B0208 Buick Code - Rear Blower Motor Speed Malfunction

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: B0208 Buick indicates Rear Blower Motor Speed Malfunction .
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 868

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0208 Buick 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 B0208 Buick - Rear Blower Motor Speed Malfunction - AutoCodes.com — B0208 Buick Code - Rear Blower Motor Speed Malfunction

What does this mean?

What are the Possible Causes of the DTC B0208 Buick?

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 B0208 Buick?

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 does this mean?

Code Tech Notes

B0208 01 Rear Blower Motor Speed Circuit Short to Battery
B0208 06 Rear Blower Motor Speed Circuit Low Voltage/Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0208 Buick 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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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 B0208 Buick Code

1. What are the common symptoms of OBDII code B0208 Buick (Rear Blower Motor Speed Malfunction)?

- The common symptoms include the rear blower motor not functioning properly, inconsistent airflow from the rear vents, or no airflow at all.

2. What can cause the OBDII code B0208 Buick to trigger?

- The code B0208 is typically triggered by issues with the rear blower motor, such as a malfunctioning motor, faulty wiring, or a problem with the blower motor control module.

3. How can I diagnose the cause of the rear blower motor speed malfunction?

- To diagnose the issue, you can start by checking the rear blower motor fuse, inspecting the wiring for any damage, testing the blower motor itself, and checking the blower motor control module for faults.

4. What are some repair tips for fixing OBDII code B0208 Buick?

- Repair tips may include replacing the rear blower motor if it is faulty, repairing any damaged wiring, resetting the blower motor control module, or recalibrating the HVAC system.

5. Can I continue driving my Buick with the B0208 code?

- It is not recommended to drive your Buick with the B0208 code, as the malfunctioning rear blower motor can affect the climate control system's performance and comfort inside the vehicle.

6. Are there any safety concerns associated with the B0208 Buick code?

- While the B0208 code itself may not pose immediate safety risks, a malfunctioning rear blower motor can impact the defrosting capabilities and overall comfort of the vehicle, especially in extreme weather conditions.

7. How much does it typically cost to repair OBDII code B0208 Buick?

- The cost of repairing the B0208 code can vary depending on the exact cause of the issue, but it may involve expenses for parts, labor, and diagnostics. Repair costs can range from $100 to $500 or more.

8. Can I reset the B0208 code myself, or do I need a professional mechanic?

- You can attempt to reset the B0208 code by using an OBDII scanner to clear the code. However, if the issue persists, it is recommended to seek the expertise of a professional mechanic to diagnose and repair the problem.

9. How long does it take to fix the rear blower motor speed malfunction issue?

- The time required to fix the B0208 code can vary depending on the exact cause of the problem and the complexity of the repair. In general, it may take anywhere from 1 to 3 hours to diagnose and repair the issue.

10. Is the rear blower motor speed malfunction a common issue in Buick vehicles?

- While the B0208 Buick code is not extremely common, issues with the rear blower motor can occur in Buick vehicles due to normal wear and tear, electrical faults, or component failures. Regular maintenance can help prevent such problems.