AutoCodes – Generic – B163B

B163B Code - Front Left Turn Control Circuit Low

Quick Answer

The Body Control Module (BCM) receives a communication network message from the Steering Column Control Module (SCCM) requesting turn signal lamp illumination. Common causes include Blown Front Left Park and Turn Signal Bulb, Faulty Front Left Turn Lamp, Front Left Turn Lamp harness is open or shorted. 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: B163B indicates Front Left Turn Control Circuit Low.
Common causes: Common causes include Blown Front Left Park and Turn Signal Bulb, Faulty Front Left Turn Lamp, Front Left Turn Lamp harness is open or shorted.
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 1,538

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 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B163B Description

The Body Control Module (BCM) receives a communication network message from the Steering Column Control Module (SCCM) requesting turn signal lamp illumination. When this bus message is received, the BCM provides a pulsed voltage output through the front turn signal control circuit. The front turn signal control circuit connects to the dual filament Park and Turn Signal Lamp. The same ground circuit is used for both the Park and Turn Signal filaments in a dual filament lamp.

OBDII Code B163B - Front Left Turn Control Circuit Low - AutoCodes.com — B163B Code - Front Left Turn Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B163B?

Blown Front Left Park and Turn Signal Bulb
Faulty Front Left Turn Lamp
Front Left Turn Lamp harness is open or shorted
Front Left Turn Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B163B?

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 B163B 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 B163B code?

Need more information on how to fix the B163B code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

B163B Chrysler — Front Left Turn Control Circuit Low
B163B Dodge — Front Left Turn Control Circuit Low
B163B Jeep — Front Left Turn Control Circuit Low
B163B RAM — Front Left Turn Control Circuit Low

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 B163B Code

1. What are the common symptoms of OBDII code B163B (Front Left Turn Control Circuit Low)?

- Common symptoms include a malfunctioning front left turn signal, dim or non-functional turn signal lights, and potential issues with the turn signal switch.

2. What are the possible causes of OBDII code B163B?

- Possible causes of this code include a faulty turn signal switch, damaged wiring or connectors in the front left turn signal circuit, or a problem with the front left turn signal bulb.

3. How can I diagnose the Front Left Turn Control Circuit Low error code?

- To diagnose this code, you can start by visually inspecting the front left turn signal bulb, checking the wiring and connectors for any damage, and testing the turn signal switch for proper functionality using a multimeter.

4. Can a blown fuse cause OBDII code B163B to appear?

- Yes, a blown fuse in the front left turn signal circuit can cause the Front Left Turn Control Circuit Low code to appear. Check the fuse box for any blown fuses and replace them if necessary.

5. What are some repair tips for resolving OBDII code B163B?

- Repair tips include checking and replacing the front left turn signal bulb, repairing any damaged wiring or connectors in the circuit, and ensuring the turn signal switch is functioning correctly.

6. Is it safe to continue driving with OBDII code B163B active?

- It is generally safe to continue driving with this code, but it is important to address the issue promptly to ensure proper turn signal functionality and maintain road safety.

7. Can a DIY enthusiast fix OBDII code B163B at home?

- Yes, DIY enthusiasts can often address this code at home by following repair guides, using basic tools, and conducting thorough inspections of the turn signal circuit components.

8. How much does it typically cost to repair OBDII code B163B at a mechanic's shop?

- The cost of repairing this code at a mechanic's shop can vary depending on the specific cause of the issue, but it may range from $100 to $300 including parts and labor.

9. Will clearing the OBDII code B163B make it go away permanently?

- Clearing the code may temporarily remove the warning light, but if the underlying issue causing the code is not resolved, it is likely to reappear upon the next diagnostic scan.

10. Can extreme weather conditions impact the Front Left Turn Control Circuit and trigger code B163B?

- Yes, extreme weather conditions such as heavy rain or snow can potentially cause moisture to affect the front left turn signal components, leading to circuit issues and the appearance of code B163B.