B16B4 Code - Right Stop Lamp Control Circuit Low
Quick Answer
The B16B4 diagnostic trouble code (DTC) refers to a problem with the right stop lamp control circuit being detected as low. Common causes include Faulty right brake light bulb, Damaged wiring harness connecting the right brake light, Malfunctioning brake light switch. 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 brake light bulb, Damaged wiring harness connecting the right brake light, Malfunctioning brake light switch.
- 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 B16B4 Description
The B16B4 diagnostic trouble code (DTC) refers to a problem with the right stop lamp control circuit being detected as low. This means that the control module in the vehicle is not receiving the expected signal from the right stop lamp circuit. The stop lamp control circuit is responsible for activating the brake lights when the brake pedal is pressed. When this circuit is not functioning properly, it can pose a safety hazard as other drivers may not be aware that the vehicle is braking.
Common Causes of B16B4
- Faulty right brake light bulb.
- Damaged wiring harness connecting the right brake light.
- Malfunctioning brake light switch.
- Defective control module.
- Corrosion or loose connections in the right stop lamp control circuit.
Symptoms of B16B4
- Right brake light not illuminating when the brake pedal is pressed.
- Dashboard warning light indicating a brake light malfunction.
- Flickering or dim right brake light.
- Vehicle's brake lights staying on constantly.
How to Fix B16B4
- Begin by inspecting the right brake light bulb to check for any signs of damage or burnout. Replace the bulb if necessary.
- Check the wiring harness for any visible damage or corrosion. Repair or replace any damaged wires.
- Test the brake light switch to ensure it is functioning correctly. Replace the switch if it is faulty.
- Inspect the control module for any signs of damage or malfunction. Replace the control module if needed.
- Clear the DTC from the vehicle's memory using a diagnostic scanner after completing the repairs.
Cost to Fix B16B4
The cost of repairing a right stop lamp control circuit low issue can vary depending on the specific cause of the problem and the make and model of the vehicle. On average, the cost of parts for this repair can range from $20 to $100, while labor costs can range from $50 to $150. Overall, the total repair cost can be estimated to be between $70 and $250. It's important to note that these estimates are general guidelines and actual costs may vary based on individual circumstances and location. It's recommended to consult with a qualified mechanic for a more accurate cost estimate.
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Code B16B4 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.
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