B1638 Jeep 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 Jeep 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 Jeep Description
What are the Possible Causes of the DTC B1638 Jeep?
- 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 Jeep?
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 Jeep 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 Jeep Code
1. What does the OBDII code B1638 indicate on a Jeep?
- Code B1638 indicates a fault in the Right High Beam Control Circuit, specifically that the circuit is experiencing high voltage.
2. What are the common symptoms of code B1638 in a Jeep?
- Symptoms include the right high beam headlight not functioning properly or being stuck in the "on" position, possible flickering of the right high beam, and the illumination of the check engine or a specific headlight warning light on the dashboard.
3. What could cause the OBDII code B1638 to appear on a Jeep?
- Common causes include a faulty right high beam bulb, damaged wiring or connectors related to the right high beam circuit, a faulty headlight relay, or issues with the headlight control switch.
4. How can I diagnose the problem leading to code B1638 on my Jeep?
- Diagnosing this issue involves checking the right high beam bulb and socket for damage or corrosion, inspecting the wiring and connectors for breaks or shorts, testing the headlight relay, and checking the operation of the headlight control switch using a multimeter.
5. What are the steps to fix the code B1638 on a Jeep?
- To fix code B1638, replace any faulty bulbs or damaged components, repair or replace any damaged wiring or connectors, replace a faulty relay or headlight control switch if needed, and ensure all connections are secure.
6. Is it safe to drive my Jeep with the OBDII code B1638?
- While it might be safe to drive, reduced visibility at night due to malfunctioning high beams could pose a safety risk. It is advisable to address the issue promptly to ensure safe driving conditions.
7. What tools are needed to repair a Jeep showing the code B1638?
- You will need basic hand tools to replace bulbs or components, a multimeter for electrical testing, and possibly a wiring diagram for more complex diagnostics.
8. Can a malfunctioning right high beam affect other vehicle systems on a Jeep?
- Typically, a malfunctioning right high beam will not affect other vehicle systems directly but focusing on resolving the issue promptly is recommended for overall vehicle safety and functionality.
9. How much does it typically cost to fix the code B1638 in a Jeep?
- The cost can vary widely depending on the specific cause. Simple fixes like bulb replacement may cost very little, whereas repairing wiring or replacing major components like the headlight control switch could be more expensive.
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