AutoCodes – Jeep – B16AF Jeep

B16AF Jeep Code - Left Stop Lamp Control Circuit

Quick Answer

The Body Control Module (BCM) receives a hardwired brake signal from the Anti-lock Brake System (ABS) module indicating that the Brake Pedal is applied. Common causes include Faulty Left Stop Lamp, Left Stop Lamp harness is open or shorted, Left Stop Lamp 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: B16AF Jeep indicates Left Stop Lamp Control Circuit.
Common causes: Common causes include Faulty Left Stop Lamp, Left Stop Lamp harness is open or shorted, Left Stop Lamp 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 2,447

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 19, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B16AF Jeep Description

The Body Control Module (BCM) receives a hardwired brake signal from the Anti-lock Brake System (ABS) module indicating that the Brake Pedal is applied. When this signal is received, the BCM provides a voltage output through the rear stop signal control circuit. For additional information on the Brake Lamp operation. When the Body Control Module (BCM) detects a low or high condition on the Left Stop Lamp Driver circuit and sets the Diagnostic Trouble Code (DTC).

OBDII Code B16AF Jeep - Left Stop Lamp Control Circuit - AutoCodes.com — B16AF Jeep Code - Left Stop Lamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B16AF Jeep?

Faulty Left Stop Lamp
Left Stop Lamp harness is open or shorted
Left Stop Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B16AF Jeep?

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 does this mean?

Code Tech Notes

B16AF-11 LEFT STOP LAMP CONTROL CIRCUIT SHORT TO GROUND
B16AF-15 LEFT STOP LAMP CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B16AF Jeep 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 B16AF Jeep Code

1. What does OBDII code B16AF for a Jeep indicate?

The B16AF code indicates a fault in the left stop lamp control circuit of the vehicle.

2. What are the common symptoms of a B16AF code in a Jeep?

Common symptoms include the left stop lamp not functioning properly, the brake lights staying on continuously, or the brake lights not turning on at all.

3. What are some possible causes of the B16AF code in a Jeep?

Possible causes include a faulty brake light switch, damaged wiring or connectors in the left stop lamp circuit, or a malfunctioning body control module.

4. How can I diagnose the cause of a B16AF code in my Jeep?

You can start by visually inspecting the left stop lamp and its wiring for any visible damage. Additionally, using a multimeter to test the brake light switch and circuit continuity can help pinpoint the issue.

5. Can I still drive my Jeep with a B16AF code present?

It is not recommended to drive the vehicle with a B16AF code active, as it indicates a potential issue with the brake lights, which are crucial for safety on the road.

6. How can I repair a B16AF code in my Jeep?

Repairing a B16AF code may involve replacing the brake light switch, repairing or replacing damaged wiring, or reprogramming the body control module, depending on the exact cause of the issue.

7. Is it possible to reset a B16AF code in a Jeep without repairs?

While clearing the code may temporarily turn off the warning light, it is crucial to address the underlying issue causing the B16AF code to prevent further safety hazards.

8. Are there any DIY tips for troubleshooting a B16AF code in a Jeep?

DIY tips include checking and replacing the brake light bulbs, inspecting and cleaning the connectors in the left stop lamp circuit, and ensuring proper grounding of the brake lights.

9. Can a B16AF code in a Jeep cause other electrical problems?

While the B16AF code specifically relates to the left stop lamp control circuit, unresolved issues with the brake light system can potentially lead to other electrical problems in the vehicle.

10. How long does it typically take to repair a B16AF code in a Jeep?

The repair time for a B16AF code can vary depending on the exact cause of the issue and the expertise of the person performing the repairs. Simple fixes like replacing a brake light switch may take less than an hour, while more complex wiring repairs can take longer.