B1638 RAM Code - Right High Beam Control Circuit High
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
- B1638 RAM indicates Right High Beam Control Circuit High.
- 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.
Code B1638 RAM Description
What are the Possible Causes of the DTC B1638 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 B1638 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 B1638 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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Frequently Asked Questions about B1638 RAM Code
1. What does the OBDII code B1638 RAM mean?
The code B1638 RAM indicates a high voltage condition in the right high beam control circuit, suggesting an electrical issue in the wiring, bulb, or related components.
2. What are the common symptoms of code B1638 RAM?
Symptoms include the right high beam not functioning, flickering, or staying on continuously, along with the illumination of a warning light on the dashboard.
3. What causes the B1638 RAM code to appear?
Common causes include a faulty high beam bulb, damaged or shorted wiring, a malfunctioning headlamp control module, or corroded connectors.
4. Can I drive with the B1638 RAM code active?
Yes, but it’s not recommended as the right high beam may not work properly, which can reduce nighttime visibility and compromise safety.
5. How do I diagnose the B1638 RAM code?
Start by inspecting the right high beam bulb, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.
6. How do I fix the B1638 RAM code?
Repairs may include replacing a burned-out bulb, repairing damaged wiring, cleaning corroded connectors, or replacing a faulty headlamp control module.
7. Can a blown fuse cause the B1638 RAM code?
It’s unlikely, as this code specifically indicates a high voltage issue, but checking the fuse is still a good step in case it’s related to other headlight circuit problems.
8. How much does it cost to fix the B1638 RAM code?
Costs vary depending on the issue, with bulb replacements typically costing $20-$50, while wiring or module repairs may cost $100-$300 or more.
9. Can a failing battery or alternator trigger the B1638 RAM code?
Unlikely, but electrical system issues like voltage spikes can sometimes contribute to circuit problems, so it’s worth checking the charging system.
10. Do I need a professional to fix the B1638 RAM code?
Not always. Simple fixes like replacing a bulb or cleaning connectors can be done at home. For wiring or module issues, professional help may be necessary.
Discuss the causes and fixes for B1638 RAM OBDII Code
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