B16B4 Code - Right Stop Lamp Control Circuit Low
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 Right Stop Lamp, Right Stop Lamp harness is open or shorted, Right 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
- B16B4 indicates Right Stop Lamp Control Circuit Low.
- Common causes
- Common causes include Faulty Right Stop Lamp, Right Stop Lamp harness is open or shorted, Right 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.
Code B16B4 Description
What are the Possible Causes of the DTC B16B4?
- Faulty Right Stop Lamp
- Right Stop Lamp harness is open or shorted
- Right Stop Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B16B4?
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 B16B4 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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Information for Specific Makes
- B16B4 Chrysler — Right Stop Lamp Control Circuit Low
- B16B4 Dodge — Right Stop Lamp Control Circuit Low
- B16B4 Jeep — Right Stop Lamp Control Circuit Low
- B16B4 RAM — Right Stop Lamp Control Circuit Low
Frequently Asked Questions about B16B4 Code
1. What does the OBDII code B16B4 mean?
The code B16B4 indicates that the right stop lamp control circuit is experiencing a low voltage condition, preventing proper operation of the right brake light.
2. What are the common symptoms of the B16B4 code?
Common symptoms include the right brake light not functioning, a warning light on the dash, and potentially reduced visibility for other drivers.
3. What causes the B16B4 code to appear?
The most common causes include a blown bulb, a damaged or corroded wiring connection, a faulty stop lamp switch, or a malfunctioning control module.
4. Can I drive with the B16B4 code active?
While you can technically drive, it is unsafe as the right brake light won’t function properly, which can increase the risk of accidents and might result in a traffic violation.
5. How do I diagnose the B16B4 code?
Start by inspecting the right brake light bulb, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage at the circuit.
6. How do I fix the B16B4 code?
Repairs may include replacing the brake light bulb, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a faulty stop lamp switch or control module.
7. Can a bad fuse trigger the B16B4 code?
Yes, a blown fuse related to the stop lamp circuit can cause a low voltage condition and trigger this code.
8. Will clearing the B16B4 code fix the issue?
Clearing the code without addressing the underlying problem is not a fix; the code will likely reappear until the issue is resolved.
9. How much does it cost to fix the B16B4 code?
The cost varies depending on the issue. Replacing a bulb is inexpensive, while repairing wiring or replacing a control module could be more costly.
10. Can a bad stop lamp switch cause the B16B4 code?
Yes, a faulty stop lamp switch can disrupt the circuit and cause the B16B4 code to appear.
Discuss the causes and fixes for B16B4 OBDII Code
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