AutoCodesRAM – B17B8 RAM

B17B8 RAM Code - Left Stop Lamp Control Circuit Overcurrent

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Left Stop Lamp Control. Common causes include Faulty Left Stop Lamp, Left Stop Lamp Control harness is open or shorted, Left Stop Lamp Control 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
B17B8 RAM indicates Left Stop Lamp Control Circuit Overcurrent.
Common causes
Common causes include Faulty Left Stop Lamp, Left Stop Lamp Control harness is open or shorted, Left Stop Lamp Control 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 743
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 01, 2019
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Code B17B8 RAM Description

The Totally Integrated Power Module (TIPM) monitors the Left Stop Lamp Control. The Totally Integrated Power Module sets the OBDII code when the Left Stop Lamp Control is not to factory specifications.
OBDII Code B17B8 RAM - Left Stop Lamp Control Circuit Overcurrent - AutoCodes.com
B17B8 RAM Code - Left Stop Lamp Control Circuit Overcurrent

What are the Possible Causes of the DTC B17B8 RAM?

  • Faulty Left Stop Lamp
  • Left Stop Lamp Control harness is open or shorted
  • Left Stop Lamp Control circuit poor electrical connection
  • Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B17B8 RAM?

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 B17B8 RAM 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.

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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 B17B8 RAM Code

1. What does the OBDII code B17B8 mean on a RAM vehicle?

B17B8 indicates an issue with the left stop lamp control circuit, specifically an overcurrent condition, meaning excessive electrical current has been detected.

2. What are the common symptoms of the B17B8 code?

Symptoms may include the left brake light not functioning, flickering, or staying on constantly, along with a possible warning light on the dashboard.

3. What causes the B17B8 code to appear?

Common causes include a short circuit in the wiring, a faulty left brake light bulb, a damaged bulb socket, or a malfunctioning Body Control Module (BCM).

4. Can I still drive my RAM with the B17B8 code?

While the vehicle may still be drivable, it’s unsafe to drive with a malfunctioning brake light as it can lead to accidents or legal issues.

5. How do I diagnose the B17B8 code?

Diagnosis involves checking the left brake light bulb, inspecting the wiring and connectors for damage or short circuits, and testing the Body Control Module for faults.

6. How can I fix the B17B8 code?

Repair may involve replacing the bulb, repairing or replacing damaged wiring, cleaning or replacing the bulb socket, or reprogramming or replacing the BCM if necessary.

7. How much does it cost to repair the B17B8 code?

Costs vary depending on the issue; replacing a bulb is inexpensive, while repairing wiring or replacing the BCM can be more costly, ranging from $50 to $600 or more.

8. Does the B17B8 code always mean the BCM is faulty?

No, the BCM is not always the issue. The problem is often with the bulb, socket, or wiring, so these should be checked first.

9. Can a blown fuse cause the B17B8 code?

Yes, a blown fuse related to the stop lamp circuit can cause or be a result of the overcurrent condition, so it should be checked during diagnosis.

10. Will clearing the code with a scan tool fix the problem?

Clearing the code may temporarily remove the warning, but the underlying issue must be resolved to prevent the code from returning.

Discuss the causes and fixes for B17B8 RAM OBDII Code

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