AutoCodes – Generic – B1A82

B1A82 Code - External Trip Switch

Quick Answer

The message center functionality is controlled through the message center switch (part of the LH steering wheel switch), which is hardwired to the Instrument Panel Cluster (IPC) through input and return circuits. Common causes include Faulty Message Center Switch (Part of the LH Steering Wheel switch), Message Center Switch harness is open or shorted, Message Center 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: B1A82 indicates External Trip Switch.
Common causes: Common causes include Faulty Message Center Switch (Part of the LH Steering Wheel switch), Message Center Switch harness is open or shorted, Message Center 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 3,116

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 Aug 14, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1A82 Description

The message center functionality is controlled through the message center switch (part of the LH steering wheel switch), which is hardwired to the Instrument Panel Cluster (IPC) through input and return circuits. There are 3 message center switch buttons (base IPC ) or 5 message center switch buttons (optional IPC ). Each button operates a unique switch within the message center switch portion of the LH steering wheel switch assembly using a different resistance value associated with each specific button. The IPC sends out a reference voltage to the LH steering wheel switch on the input circuit and monitors the voltage drop when a message center switch button is pressed. The voltage drop varies depending upon the resistance of the specific button pressed, providing indication to the IPC , which switch is pressed.

OBDII Code B1A82 - External Trip Switch - AutoCodes.com — B1A82 Code - External Trip Switch

What does this mean?

What are the Possible Causes of the DTC B1A82?

Faulty Message Center Switch (Part of the LH Steering Wheel switch)
Message Center Switch harness is open or shorted
Message Center Switch circuit poor electrical connection
Faulty Clockspring
Faulty Instrument Panel Cluster (IPC)

How to Fix the DTC B1A82?

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

B1A82:09 External Trip Switch Component Failure
B1A82:11 External Trip Switch Circuit Short To Ground
B1A82:13 External Trip Switch Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1A82 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 B1A82 code?

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Need Help with the Code?

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Information for Specific Makes

B1A82 Ford — External Trip Switch
B1A82 Lincoln — External Trip Switch
B1A82 Mercury — External Trip Switch

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 B1A82 Code

1. What are the common symptoms of OBDII code B1A82 (External Trip Switch)?

- Common symptoms include illuminated warning lights on the dashboard, issues with cruise control functionality, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code B1A82 (External Trip Switch)?

- The code B1A82 can be triggered by a faulty external trip switch, damaged wiring harness, or a malfunctioning control module.

3. How can I diagnose the OBDII code B1A82 (External Trip Switch)?

- Diagnosis typically involves using a professional OBDII scanner to read and interpret the code. Inspecting the external trip switch and related wiring for any visible damage is also recommended.

4. What are the repair options for OBDII code B1A82 (External Trip Switch)?

- Repair options may include replacing the external trip switch, repairing any damaged wiring, or reprogramming the control module if necessary.

5. Can I drive my vehicle with OBDII code B1A82 (External Trip Switch) present?

- It is not recommended to drive the vehicle with this code present, as it may affect important functions like cruise control and could potentially lead to further issues.

6. How much does it typically cost to repair OBDII code B1A82 (External Trip Switch)?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Will resetting the OBDII code B1A82 (External Trip Switch) make it go away permanently?

- Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

8. Can a DIY enthusiast fix OBDII code B1A82 (External Trip Switch) at home?

- Depending on the cause of the code, some DIY enthusiasts may be able to replace the external trip switch or repair wiring themselves, but more complex issues may require professional help.

9. Is OBDII code B1A82 (External Trip Switch) a serious problem?

- While it may not be an emergency, it is important to address this code promptly to prevent potential safety issues and ensure the proper functioning of your vehicle.

10. How long does it typically take to repair OBDII code B1A82 (External Trip Switch)?

- The repair time can vary based on the specific cause and complexity of the issue, but it may take anywhere from 1 to 3 hours to resolve the problem.