AutoCodes – Generic – B2408

B2408 Code - Intake Motor

Quick Answer

The actuator contains a motor that changes the intake door position and a potentiometer that monitors the position of the door. Common causes include Faulty Intake Actuator, Intake Actuator harness is open or shorted, Intake 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: B2408 indicates Intake Motor.
Common causes: Common causes include Faulty Intake Actuator, Intake Actuator harness is open or shorted, Intake 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.

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Code Popularity 1,743

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2408 Description

The actuator contains a motor that changes the intake door position and a potentiometer that monitors the position of the door. When the driver changes the air intake switch, the ECU operates the intake door motor to turn the intake door to the intended position. (in the FRESH mode, the intake door is closed. In REC mode, the intake door is opened) During operation, the potentiometer delivers an intake door position to the A/C ECU. The Diagnostic Trouble Code (DTC) sets when no movement to controlled mode position for 40 seconds.

OBDII Code B2408 - Intake Motor - AutoCodes.com — B2408 Code - Intake Motor

What does this mean?

What are the Possible Causes of the DTC B2408?

Faulty Intake Actuator
Intake Actuator harness is open or shorted
Intake Actuator circuit poor electrical connection
Faulty Air Conditioner Control Module

How to Fix the DTC B2408?

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 B2408 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.

Need more information about the B2408 code?

Need more information on how to fix the B2408 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2408 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2408 Hyundai — Intake Motor
B2408 KIA — Intake Motor

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 B2408 Code

1. What are common symptoms of OBDII code B2408 (Intake Motor)?

- Common symptoms include issues with the intake manifold, such as poor engine performance, rough idling, and reduced fuel efficiency.

2. What are potential causes of OBDII code B2408 (Intake Motor)?

- The code B2408 can be triggered by a faulty intake motor, damaged wiring or connectors, or issues with the intake manifold itself.

3. How can I diagnose OBDII code B2408 (Intake Motor)?

- Diagnosis typically involves using a scan tool to retrieve the code, conducting a visual inspection of the intake system, and testing the intake motor for proper functionality.

4. Can I continue driving with OBDII code B2408 (Intake Motor) present?

- It is not recommended to continue driving with this code as it can lead to further engine damage and decreased performance. It's best to address the issue promptly.

5. How do I repair OBDII code B2408 (Intake Motor)?

- Repairing the code may involve replacing the faulty intake motor, repairing damaged wiring or connectors, or addressing any issues with the intake manifold.

6. Are there any DIY tips for fixing OBDII code B2408 (Intake Motor)?

- While some basic troubleshooting can be done, it's advisable to consult a professional mechanic for proper diagnosis and repair of the intake motor-related issue.

7. Can a dirty air filter cause OBDII code B2408 (Intake Motor)?

- A dirty air filter may not directly cause this specific code, but a clogged air filter can contribute to poor engine performance and may exacerbate issues related to the intake motor.

8. How much does it typically cost to repair OBDII code B2408 (Intake Motor)?

- The cost of repair can vary depending on the extent of the issue, the specific repairs needed, and the labor rates of the mechanic. It's advisable to get a diagnosis and quote from a professional.

9. Will resetting the OBDII system clear code B2408 (Intake Motor)?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the intake motor is not addressed, the code is likely to reappear.

10. Can a malfunctioning intake motor cause other OBDII codes to appear?

- Yes, a malfunctioning intake motor can impact the overall performance of the engine, leading to the triggering of other related OBDII codes besides B2408.