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Engine-Codes – Generic – B17D2

B17D2 Code - Emergency Flashing Lamp Request 2 Circuit High

Quick Answer

The B17D2 diagnostic trouble code (DTC) refers to the Emergency Flashing Lamp Request 2 Circuit High. Common causes include Loose or corroded wiring connections in the emergency light circuit, A faulty emergency light switch, Malfunctioning body control module. 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
B17D2 indicates Emergency Flashing Lamp Request 2 Circuit High .
Common causes
Common causes include Loose or corroded wiring connections in the emergency light circuit, A faulty emergency light switch, Malfunctioning body control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B17D2 Description

The B17D2 diagnostic trouble code (DTC) refers to the Emergency Flashing Lamp Request 2 Circuit High. This code indicates that there is a high voltage condition detected in the circuit that controls the emergency flashing lights on the vehicle. The emergency flashing lights, also known as hazard lights, are essential safety features that alert other drivers of an emergency situation or a breakdown. When this circuit is compromised, it can affect the proper functioning of the emergency lights, potentially putting the driver and other road users at risk.

OBDII Code B17D2 - Emergency Flashing Lamp Request 2 Circuit High
B17D2 Code - Emergency Flashing Lamp Request 2 Circuit High

Common Causes of B17D2

  1. Loose or corroded wiring connections in the emergency light circuit.
  2. A faulty emergency light switch.
  3. Malfunctioning body control module.
  4. Short circuit in the emergency light circuit.
  5. Electrical issues related to water damage or exposure to harsh environmental conditions.

Symptoms of B17D2

  1. Emergency flashing lights not working properly or not turning on at all.
  2. The emergency lights flashing intermittently or staying on continuously.
  3. Dashboard warning light related to the emergency lights illuminating.
  4. Issues with other electrical systems in the vehicle, such as the turn signals or brake lights.

How to Fix B17D2

  1. Begin by conducting a thorough visual inspection of the emergency light circuit, checking for any loose or damaged wiring connections.
  2. Test the emergency light switch for proper functionality using a multimeter to determine if it is faulty and needs replacement.
  3. Scan the vehicle's onboard computer system for any fault codes related to the body control module and address any issues found.
  4. Check for any signs of a short circuit in the emergency light circuit, such as burnt wiring or fuses, and repair or replace the affected components.
  5. Clear the DTC from the vehicle's computer system after completing the repairs and test the emergency lights to ensure they are functioning correctly.

Cost to Fix B17D2

The typical repair costs for addressing the B17D2 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, repairing the emergency flashing lamp circuit can range from $100 to $300, including parts and labor. However, the actual cost may be higher if additional components need replacement or if there are underlying electrical system issues that require attention.

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Code B17D2 Information for Specific Makes

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 B17D2 Code

What does the OBDII code B17D2 mean?

The OBDII code B17D2 refers to an issue with the Emergency Flashing Lamp Request 2 Circuit, indicating that the circuit is detecting a high voltage or an open circuit condition.

What symptoms might indicate the presence of code B17D2?

Common symptoms may include malfunctioning hazard lights, dashboard warning lights, or the inability to activate the emergency flashers properly.

What could cause the B17D2 code to trigger?

Possible causes include a short circuit in the wiring, a faulty switch, or a malfunctioning body control module that manages the emergency flashers.

How can I diagnose the B17D2 code?

To diagnose the code, start by inspecting the wiring and connections related to the emergency flashers for damage or corrosion, then test the switch and module for proper operation.

Are there any common fixes for the B17D2 code?

Common fixes include repairing or replacing damaged wiring, replacing a faulty switch, or reprogramming or replacing the body control module.

Is it safe to drive with the B17D2 code present?

While it may be safe to drive, it is advisable to have the issue diagnosed and repaired promptly to ensure that the emergency flashers work correctly in case of an emergency.

Can the B17D2 code cause other issues in the vehicle?

Yes, if the emergency flashers are not functioning correctly, it may lead to safety issues, especially when signaling to other drivers in emergency situations.

How do I clear the B17D2 code after repairs?

After addressing the underlying issue, you can clear the code using an OBDII scanner or by disconnecting the vehicle's battery for a short period, then reconnecting it.

What should I do if the B17D2 code returns after repairs?

If the code returns, further investigation is needed, as there may be an underlying issue not initially addressed, such as intermittent wiring problems or a defective component.

Discuss the causes and fixes for B17D2 OBDII Code

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