AutoCodes – Pontiac – B0248 Pontiac

B0248 Pontiac Code - Air Flow Control 3 Circuit

Quick Answer

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. Common causes include Faulty Mode Actuator, Mode Actuator harness is open or shorted, Mode Actuator 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: B0248 Pontiac indicates Air Flow Control 3 Circuit.
Common causes: Common causes include Faulty Mode Actuator, Mode Actuator harness is open or shorted, Mode Actuator 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 1,473

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 B0248 Pontiac Description

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the HVAC controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the Heating, Ventilation, and Air Conditioning (HVAC) Control Module via serial data. The HVAC control module supplies a 12 V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors move the appropriate doors into the calculated positions, in order to reach the desired positions.

OBDII Code B0248 Pontiac - Air Flow Control 3 Circuit - AutoCodes.com — B0248 Pontiac Code - Air Flow Control 3 Circuit

What does this mean?

What are the Possible Causes of the DTC B0248 Pontiac?

Faulty Mode Actuator
Mode Actuator harness is open or shorted
Mode Actuator circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0248 Pontiac?

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 B0248 Pontiac 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 Help with the Code?

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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 B0248 Pontiac Code

1. What are the common symptoms of OBDII code B0248 Pontiac (Air Flow Control 3 Circuit)?

The common symptoms include rough idling, decreased engine performance, and the Check Engine light illuminating on the dashboard.

2. What are the possible causes of OBDII code B0248 Pontiac?

Potential causes of this code can include a faulty air flow control module, wiring issues, or a malfunctioning air flow control actuator.

3. How can I diagnose the OBDII code B0248 Pontiac?

Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, followed by inspecting the air flow control system components for any visible damage or issues.

4. Can a DIY enthusiast repair OBDII code B0248 Pontiac at home?

While some experienced DIYers may attempt to troubleshoot and repair this code at home, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure safety and proper functioning of the vehicle.

5. Are there any repair tips for fixing OBDII code B0248 Pontiac?

Repair tips may include checking the wiring harness for loose connections or damage, testing the air flow control module and actuator for proper functioning, and ensuring all components are securely installed.

6. Is it safe to continue driving with OBDII code B0248 Pontiac active?

It is not recommended to continue driving with this code active, as it can lead to further damage to the engine or emissions system. It's best to address the issue promptly to prevent any potential complications.

7. How much does it typically cost to repair OBDII code B0248 Pontiac?

The cost of repairing this code can vary depending on the specific issue, parts needed, and labor rates. It's advisable to obtain quotes from different mechanics or repair shops for an accurate estimate.

8. Can OBDII code B0248 Pontiac be triggered by other underlying problems?

Yes, this code can sometimes be triggered by other underlying issues such as vacuum leaks, fuel system problems, or sensor malfunctions. A thorough diagnosis is necessary to identify the root cause.

9. Will resetting the Check Engine light resolve OBDII code B0248 Pontiac?

Simply resetting the Check Engine light will not fix the underlying issue causing this code. It's important to diagnose and address the root cause to prevent the code from reoccurring.

10. How long does it take to repair OBDII code B0248 Pontiac?

The repair time for this code can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed in a few hours, while others may take longer for troubleshooting and fixing.