Engine-CodesChrysler – B1634 Chrysler

B1634 Chrysler Code - Left High Beam Control Circuit High

Quick Answer

The B1634 Chrysler code refers to an issue with the Left High Beam Control Circuit being too high. Common causes include Faulty high beam control module, Damaged wiring or connectors in the left high beam circuit, Blown fuse related to the left high beam headlights. 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
B1634 Chrysler indicates Left High Beam Control Circuit High.
Common causes
Common causes include Faulty high beam control module, Damaged wiring or connectors in the left high beam circuit, Blown fuse related to the left high beam headlights.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1634 Chrysler Description

The B1634 Chrysler code refers to an issue with the Left High Beam Control Circuit being too high. This means that there is an electrical problem with the circuit that controls the left high beam headlights in the vehicle. High beam headlights are essential for nighttime driving, as they provide better visibility on the road. When this circuit is not functioning correctly, it can lead to decreased visibility, which can be a safety hazard for both the driver and other vehicles on the road.

OBDII Code B1634 Chrysler - Left High Beam Control Circuit High
B1634 Chrysler Code - Left High Beam Control Circuit High

Common Causes of B1634 Chrysler

  1. Faulty high beam control module
  2. Damaged wiring or connectors in the left high beam circuit
  3. Blown fuse related to the left high beam headlights
  4. Malfunctioning headlight switch
  5. Corrosion or moisture in the electrical connections

Symptoms of B1634 Chrysler

  1. Left high beam headlights not turning on
  2. Left high beam headlights stuck in high beam position
  3. Flickering left high beam headlights
  4. Dashboard warning light indicating a headlight issue

How to Fix B1634 Chrysler

  1. Begin by visually inspecting the wiring and connectors in the left high beam circuit to check for any damage or corrosion.
  2. Test the high beam control module to determine if it is functioning correctly.
  3. Check and replace any blown fuses related to the left high beam headlights.
  4. If necessary, replace the headlight switch if it is found to be faulty.
  5. Clear the diagnostic trouble codes and test the left high beam headlights to ensure they are working properly.

Cost to Fix B1634 Chrysler

The typical repair costs for addressing the B1634 Chrysler code can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as the vehicle make and model, as well as the engine type, can also impact the overall repair costs.

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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 B1634 Chrysler Code

What does the OBDII code B1634 mean for a Chrysler vehicle?

The B1634 code indicates a problem with the left high beam control circuit, specifically that the voltage is too high.

What are the common symptoms of the B1634 code?

Symptoms may include the left high beam not functioning, flickering lights, or the high beam indicator staying on or malfunctioning.

What causes the B1634 code to appear?

Common causes include a faulty left high beam bulb, damaged wiring, a malfunctioning high beam relay, or a defective body control module (BCM).

How can I diagnose the B1634 code on my Chrysler?

Start by inspecting the left high beam bulb, wiring, and connectors for damage or corrosion. Check the high beam relay and test for proper voltage using a multimeter.

Can I drive my Chrysler with the B1634 code present?

While the vehicle may still be drivable, it is unsafe to drive at night or in poor visibility conditions without a functioning high beam.

How do I fix the B1634 code on my Chrysler?

Repairs may include replacing the high beam bulb, repairing or replacing damaged wiring, replacing the high beam relay, or reprogramming or replacing the BCM if necessary.

How much does it cost to repair the B1634 code?

The cost depends on the specific issue. Replacing a bulb may cost under $50, while wiring or BCM repairs could range from $100 to $1,000.

Can a blown fuse cause the B1634 code?

Yes, a blown fuse in the high beam circuit can cause this issue. Check the fuse box and replace any blown fuses.

Will resetting the code fix the problem?

Clearing the code without addressing the underlying issue will only temporarily remove it. The code will return if the problem persists.

Do I need a professional mechanic to fix the B1634 code?

Simple fixes like replacing a bulb can be done by most vehicle owners, but complex wiring issues or BCM problems may require professional assistance.

Discuss the causes and fixes for B1634 Chrysler OBDII Code

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