AutoCodes – Generic – B1F08

B1F08 Code - Terrain Switch Bank Module Internal

Quick Answer

The Terrain Switch Bank Module monitors the Transfer Case Switch. Common causes include Faulty Transfer Case Switch, Transfer Case Switch harness is open or shorted, Transfer Case Switch 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: B1F08 indicates Terrain Switch Bank Module Internal.
Common causes: Common causes include Faulty Transfer Case Switch, Transfer Case Switch harness is open or shorted, Transfer Case Switch 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 856

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 Sep 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1F08 Description

The Terrain Switch Bank Module monitors the Transfer Case Switch. The Terrain Switch Bank Module sets the OBDII code when the Transfer Case Switch detects an internal fault.

OBDII Code B1F08 - Terrain Switch Bank Module Internal - AutoCodes.com — B1F08 Code - Terrain Switch Bank Module Internal

What does this mean?

What are the Possible Causes of the DTC B1F08?

Faulty Transfer Case Switch
Transfer Case Switch harness is open or shorted
Transfer Case Switch circuit poor electrical connection

How to Fix the DTC B1F08?

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 B1F08 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 B1F08 code?

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Need Help with the Code?

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Information for Specific Makes

B1F08 Chrysler — Terrain Switch Bank Module Internal
B1F08 Dodge — Terrain Switch Bank Module Internal
B1F08 Jeep — Terrain Switch Bank Module Internal
B1F08 RAM — Terrain Switch Bank Module Internal

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 B1F08 Code

1. What are common symptoms associated with OBDII code B1F08 (Terrain Switch Bank Module Internal)?

- Common symptoms include erratic behavior of the terrain switch, malfunction indicator light (MIL) illumination, and potential loss of power steering assistance.

2. What are the possible causes of OBDII code B1F08?

- Possible causes include a faulty terrain switch, wiring issues, or a malfunction within the bank module itself.

3. How can I diagnose the OBDII code B1F08?

- Diagnosis typically involves checking the terrain switch for proper operation, inspecting the wiring for any damage or loose connections, and using a diagnostic scan tool to retrieve the specific error codes.

4. Is it safe to continue driving with OBDII code B1F08 present?

- It is not recommended to continue driving with the code present, as it may lead to unpredictable behavior of the terrain switch or potential loss of power steering assistance, compromising vehicle safety.

5. Can I repair OBDII code B1F08 myself?

- Depending on your level of expertise, you may be able to address the issue by checking and replacing the terrain switch, inspecting the wiring for any faults, or resetting the module. However, professional diagnosis and repair may be necessary for a more accurate fix.

6. How much does it typically cost to repair OBDII code B1F08?

- The cost of repair can vary widely depending on the specific cause of the issue. It may range from a simple fix like resetting the module to more complex repairs involving replacement of the terrain switch or module components.

7. Will resetting the OBDII code B1F08 make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and repair the root cause of the problem for a permanent solution.

8. Can a faulty terrain switch cause other OBDII codes to appear?

- Yes, a faulty terrain switch can cause other related error codes to appear, such as codes related to steering angle sensor malfunction or stability control system issues.

9. Is the OBDII code B1F08 specific to a certain make or model of vehicle?

- The OBDII code B1F08 related to the Terrain Switch Bank Module Internal can be found in various makes and models of vehicles equipped with this specific system.

10. Are there any preventive maintenance measures to avoid encountering OBDII code B1F08?

- Regularly checking the terrain switch for proper operation, inspecting the wiring for any signs of wear, and addressing any issues promptly can help prevent the occurrence of OBDII code B1F08.