AutoCodes – Toyota – B15C5 Toyota

B15C5 Toyota Code - Manual Button Malfunction

Quick Answer

This Diagnostic Trouble Code (DTC) is set when the Data Communication Module (DCM) (Telematics Transceiver) detects an open or short circuit in the manual (SOS) switch. Common causes include Faulty Map Light Assembly, Map Light Assembly harness is open or shorted, Map Light Assembly 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: B15C5 Toyota indicates Manual Button Malfunction.
Common causes: Common causes include Faulty Map Light Assembly, Map Light Assembly harness is open or shorted, Map Light Assembly 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 3,130

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 May 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B15C5 Toyota Description

This Diagnostic Trouble Code (DTC) is set when the Data Communication Module (DCM) (Telematics Transceiver) detects an open or short circuit in the manual (SOS) switch.

OBDII Code B15C5 Toyota - Manual Button Malfunction - AutoCodes.com — B15C5 Toyota Code - Manual Button Malfunction

What does this mean?

What are the Possible Causes of the DTC B15C5 Toyota?

Faulty Map Light Assembly
Map Light Assembly harness is open or shorted
Map Light Assembly circuit poor electrical connection
Faulty Data Communication Module (DCM) (Telematics Transceiver)

How to Fix the DTC B15C5 Toyota?

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 B15C5 Toyota 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 B15C5 Toyota code?

Need more information on how to fix the B15C5 Toyota code? Get Access to Factory Service Manuals

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 B15C5 Toyota Code

1. What are common symptoms of the OBDII code B15C5 in a Toyota related to manual button malfunction?

- Common symptoms include the manual buttons not working properly, unresponsive buttons, or intermittent functionality.

2. What are possible causes of the B15C5 OBDII code in a Toyota indicating a manual button malfunction?

- Possible causes include a faulty manual button switch, wiring issues, or a malfunctioning control module.

3. How can I diagnose the B15C5 code in a Toyota to confirm a manual button malfunction?

- To diagnose the issue, you can use a diagnostic scanner to retrieve the specific error code, visually inspect the manual buttons for damage, and check the wiring connections for any issues.

4. Are there any DIY repair tips for fixing the B15C5 code related to manual button malfunction in a Toyota?

- DIY repair tips include checking and cleaning the manual buttons, inspecting and repairing any damaged wiring, and resetting the control module to see if the issue persists.

5. Can I continue driving my Toyota with the B15C5 OBDII code indicating a manual button malfunction?

- It is generally safe to continue driving the vehicle with this code, but it is recommended to address the issue promptly to avoid potential inconvenience or further damage.

6. How much does it typically cost to repair the B15C5 OBDII code related to a manual button malfunction in a Toyota?

- Repair costs can vary depending on the exact cause of the issue, but they may range from $100 to $300 for parts and labor.

7. Will resetting the OBDII system clear the B15C5 code associated with a manual button malfunction in a Toyota?

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

8. Can weather conditions or moisture affect the manual button malfunction causing the B15C5 OBDII code in a Toyota?

- Yes, exposure to moisture or extreme weather conditions can potentially impact the functionality of manual buttons and contribute to the B15C5 code.

9. Is it possible to prevent the B15C5 OBDII code related to manual button malfunction in a Toyota?

- Regularly cleaning and maintaining the manual buttons, ensuring proper wiring connections, and avoiding exposure to moisture can help prevent the occurrence of this code.

10. Are there any recalls or technical service bulletins related to the B15C5 OBDII code and manual button malfunction in Toyota vehicles?

- It is recommended to check with Toyota dealerships or official sources for any recalls or technical service bulletins specific to the B15C5 code and manual button issues in Toyota vehicles.