Engine-CodesRAM – B17D2 RAM

B17D2 RAM Code - Emergency Flashing Lamp Request 2 Circuit High

Quick Answer

The B17D2 RAM code indicates a fault in the Emergency Flashing Lamp Request 2 circuit, specifically signaling a high voltage condition. Common causes include Short circuit in the wiring harness associated with the emergency flashers, Faulty BCM that misinterprets the voltage levels in the circuit, Corroded or damaged connectors that disrupt the electrical flow. 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 RAM indicates Emergency Flashing Lamp Request 2 Circuit High .
Common causes
Common causes include Short circuit in the wiring harness associated with the emergency flashers, Faulty BCM that misinterprets the voltage levels in the circuit, Corroded or damaged connectors that disrupt the electrical flow.
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.
Table of contents Created and updated by William Orellana on Oct 18, 2024
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Code B17D2 RAM Description

The B17D2 RAM code indicates a fault in the Emergency Flashing Lamp Request 2 circuit, specifically signaling a high voltage condition. This code is part of the vehicle's body control module (BCM) diagnostics and relates to the operation of the emergency flashers, which are crucial for alerting other drivers during roadside emergencies or vehicle breakdowns. When the BCM detects an abnormal voltage level in the circuit, it triggers this diagnostic trouble code (DTC) to alert technicians to investigate the issue.

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

Common Causes of B17D2 RAM

  1. Short circuit in the wiring harness associated with the emergency flashers.
  2. Faulty BCM that misinterprets the voltage levels in the circuit.
  3. Corroded or damaged connectors that disrupt the electrical flow.
  4. Malfunctioning emergency flasher switch that sends incorrect signals.
  5. Overvoltage from the vehicle's electrical system, possibly due to a failing alternator.

Symptoms of B17D2 RAM

  1. Emergency flashers do not activate or flicker intermittently.
  2. Dashboard warning lights may illuminate, indicating a fault in the lighting system.
  3. Turn signals may operate erratically or fail to function.
  4. Increased electrical load on the vehicle's battery, leading to potential battery drain.
  5. Possible overheating of wiring or components related to the emergency flashers.

How to Fix B17D2 RAM

  1. Diagnostic Scan: Begin by using an OBD-II scanner to confirm the B17D2 code and check for any related codes that may provide further insight into the issue.
  2. Visual Inspection: Examine the wiring harness and connectors associated with the emergency flashers for signs of damage, corrosion, or loose connections.
  3. Test Voltage Levels: Use a multimeter to measure the voltage in the emergency flashing lamp circuit to identify any abnormal readings that could indicate a short or overvoltage condition.
  4. Replace Faulty Components: If the BCM, switch, or wiring is found to be defective, replace the necessary components to restore proper function to the circuit.
  5. Clear Codes and Test: After repairs, clear the diagnostic codes and conduct a functional test of the emergency flashers to ensure they operate correctly.

Cost to Fix B17D2 RAM

The cost to repair the B17D2 RAM code can vary significantly based on the specific diagnosis and repair required. Typical repair costs may range from $100 to $500, depending on whether it involves simple wiring repairs or more complex BCM replacements. Labor rates at auto repair shops generally range from $80 to $150 per hour, with metropolitan areas or dealerships often charging higher rates. Independent shops may offer lower rates. It is advisable to check local rates and obtain multiple estimates for a more precise cost based on your vehicle's make, model, and the specific nature of the repair needed.

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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 B17D2 RAM Code

1. What does OBDII code B17D2 mean?

Code B17D2 indicates an issue with the Emergency Flashing Lamp Request 2 Circuit, specifically a "high" signal or voltage condition.

2. What are the common symptoms of the B17D2 code?

Common symptoms include emergency flashers not functioning properly, flashing at incorrect intervals, or staying on continuously.

3. What causes the B17D2 code to trigger?

Potential causes include a short to voltage, a faulty emergency flasher switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).

4. Can I still drive my vehicle with the B17D2 code?

Yes, you can usually drive with this code active, but your emergency flashers may not function correctly, which can be a safety concern in certain situations.

5. How do you diagnose the B17D2 code?

Diagnosis involves checking the wiring and connectors for damage, testing the emergency flasher switch, and using a multimeter to measure circuit voltage.

6. Is a faulty body control module a common cause of the B17D2 code?

While possible, a faulty BCM is less common and should only be considered after ruling out wiring and switch issues.

7. How can the B17D2 code be fixed?

Repairs may include replacing damaged wiring, repairing or replacing the emergency flasher switch, or addressing connector issues. In rare cases, the BCM may need to be repaired or replaced.

8. What tools are needed to troubleshoot the B17D2 code?

Basic tools include a digital multimeter, OBDII scanner, and possibly a wiring diagram for your vehicle.

9. How much does it cost to repair the B17D2 code?

Repair costs vary depending on the issue, ranging from $50 for simple wiring fixes to several hundred dollars if the BCM needs replacement.

10. Can a low battery cause the B17D2 code?

A low battery is unlikely to cause this specific code, but electrical issues from a weak battery could potentially affect the circuit indirectly.

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