AutoCodes – RAM – B1637 RAM

B1637 RAM Code - Right High Beam Control Circuit Low

Quick Answer

The Front Totally Integrated Power Module (TIPM) monitors the Right High Beam. Common causes include Faulty Right High Beam Bulb, Right High Beam Bulb harness is open or shorted, Right High Beam Bulb 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
B1637 RAM indicates Right High Beam Control Circuit Low.
Common causes
Common causes include Faulty Right High Beam Bulb, Right High Beam Bulb harness is open or shorted, Right High Beam Bulb 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 822
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 24, 2019
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Code B1637 RAM Description

The Front Totally Integrated Power Module (TIPM) monitors the Right High Beam. The TIPM sets the OBDII code when the Right High Beam is not to factory specifications.
OBDII Code B1637 RAM - Right High Beam Control Circuit Low - AutoCodes.com
B1637 RAM Code - Right High Beam Control Circuit Low

What are the Possible Causes of the DTC B1637 RAM?

  • Faulty Right High Beam Bulb
  • Right High Beam Bulb harness is open or shorted
  • Right High Beam Bulb circuit poor electrical connection
  • Faulty Front Totally Integrated Power Module (TIPM)

How to Fix the DTC B1637 RAM?

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 B1637 RAM 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 B1637 RAM Code

1. What are common symptoms of OBDII code B1637 RAM titled Right High Beam Control Circuit Low?

- Dim or non-functioning right high beam headlight, dashboard warning light indicating a fault in the high beam circuit.

2. What are possible causes of OBDII code B1637 RAM?

- Faulty high beam bulb, damaged wiring or connectors in the high beam circuit, malfunctioning headlight control module.

3. How can I diagnose the cause of OBDII code B1637 RAM?

- Use a multimeter to test the continuity of the high beam circuit, visually inspect the wiring and connectors for signs of damage or corrosion.

4. Can a blown fuse cause OBDII code B1637 RAM?

- Yes, a blown fuse in the high beam circuit can trigger this code, so it's important to check and replace any blown fuses.

5. How can I fix OBDII code B1637 RAM?

- Replace the faulty high beam bulb, repair any damaged wiring or connectors, replace the headlight control module if necessary.

6. Is it safe to continue driving with OBDII code B1637 RAM?

- It is generally safe to drive with this code, but it's important to address the issue promptly to ensure proper functioning of the high beam headlights.

7. Can a DIY enthusiast repair OBDII code B1637 RAM?

- Yes, basic repairs like replacing a bulb or fixing wiring issues can often be done by DIY enthusiasts with the right tools and knowledge.

8. Will resetting the OBDII code B1637 RAM make it go away permanently?

- Resetting the code may temporarily turn off the warning light, but it will reappear if the underlying issue is not addressed and fixed.

9. Should I take my vehicle to a mechanic for OBDII code B1637 RAM?

- If you are unsure about diagnosing or repairing the issue yourself, it's recommended to take your vehicle to a qualified mechanic for proper inspection and repair.

10. Can extreme weather conditions cause OBDII code B1637 RAM?

- Extreme temperatures or moisture can sometimes affect the high beam circuit, leading to issues that trigger this code.

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