Engine-Codes.com
Engine-Codes – Dodge – B1633 Dodge

B1633 Dodge Code - Left High Beam Control Circuit Low

Quick Answer

The B1633 diagnostic trouble code for Dodge vehicles indicates an issue with the left high beam control circuit being detected as low. Common causes include Faulty wiring or connections in the left high beam control circuit, Defective high beam switch, Malfunctioning PCM. 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
B1633 Dodge indicates Left High Beam Control Circuit Low.
Common causes
Common causes include Faulty wiring or connections in the left high beam control circuit, Defective high beam switch, Malfunctioning PCM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1633 Dodge Description

The B1633 diagnostic trouble code for Dodge vehicles indicates an issue with the left high beam control circuit being detected as low. This code is typically triggered when the Powertrain Control Module (PCM) detects a voltage signal from the left high beam control circuit that is below the specified threshold. This can result in the high beam not functioning properly, which can compromise visibility during nighttime driving or in low-light conditions.

OBDII Code B1633 Dodge - Left High Beam Control Circuit Low
B1633 Dodge Code - Left High Beam Control Circuit Low

Common Causes of B1633 Dodge

  1. Faulty wiring or connections in the left high beam control circuit.
  2. Defective high beam switch.
  3. Malfunctioning PCM.
  4. Corrosion or damage to the wiring harness.
  5. Short circuit in the high beam control circuit.

Symptoms of B1633 Dodge

  1. Dim or flickering high beam headlights on the left side.
  2. High beam headlights not turning on at all on the left side.
  3. Dashboard indicator light for high beams flashing or staying on.
  4. High beam headlights turning on and off intermittently.
  5. Electrical burning smell coming from the headlight area.

How to Fix B1633 Dodge

  1. Begin by inspecting the wiring and connections in the left high beam control circuit for any damage or corrosion. Repair or replace any faulty wiring or connectors as needed.
  2. Test the high beam switch for proper functionality and replace it if found to be defective.
  3. Check the PCM for any signs of malfunction and reprogram or replace it if necessary.
  4. Clear the diagnostic trouble codes from the PCM memory and test the high beam headlights to ensure they are functioning correctly.
  5. Perform a final test drive to confirm that the issue has been resolved and that the left high beam control circuit is operating as intended.

Cost to Fix B1633 Dodge

The typical repair costs for addressing the B1633 code on a Dodge vehicle can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that the diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

Need more information about the B1633 Dodge code?

Need more information on how to fix the B1633 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1633 Dodge code diagnosed by a professional: Find a repair shop in your area

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 B1633 Dodge Code

1. What are common symptoms of OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

The common symptoms include the left high beam not functioning properly or the high beam indicator staying on constantly.

2. What are possible causes of OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

Potential causes include a faulty high beam bulb, a damaged wiring harness, a defective high beam control module, or a problem with the vehicle's body control module.

3. How can I diagnose OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

Diagnosis involves checking the high beam bulb, inspecting the wiring for any damage, testing the high beam control module, and scanning the vehicle's computer for fault codes.

4. Can I drive my vehicle with OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

It is not recommended to drive with this code as it can affect visibility at night, compromising your safety and the safety of others on the road.

5. How do I repair OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

Repair involves replacing the faulty high beam bulb, repairing any damaged wiring, replacing the high beam control module if necessary, and clearing the fault code from the vehicle's computer.

6. Are there any DIY tips for fixing OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

If you have experience with automotive electrical systems, you may be able to check and replace the high beam bulb or inspect the wiring harness for damage. However, it is recommended to seek professional help for more complex repairs.

7. Will resetting the vehicle's computer clear OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

Resetting the computer may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return. It's important to diagnose and repair the root cause of the problem.

8. Can extreme weather conditions cause OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

Extreme weather conditions such as water damage from flooding or snow can potentially cause electrical issues leading to this fault code. It's important to keep your vehicle protected from such conditions.

9. How long does it take to repair OBDII code B1633 (Dodge) Left High Beam Control Circuit Low?

The repair time can vary depending on the exact cause of the issue. Replacing a high beam bulb or repairing wiring may take a short amount of time, while replacing a control module could take longer.

10. Is OBDII code B1633 (Dodge) Left High Beam Control Circuit Low a common issue in Dodge vehicles?

While it may not be the most common issue, problems with the high beam control circuit can occur in Dodge vehicles, especially in older models or those with high mileage. Regular maintenance can help prevent such issues.

Discuss the causes and fixes for B1633 Dodge OBDII Code

Submit a New Comment

Code B1633 Dodge comments

No comments found for this page.