B2663 Code - Headlamp Relay Output Short to Battery
Quick Answer
The Vehicle Security Module monitors the Headlamp Relay. Common causes include Faulty Headlamp Relay, Headlamp Relay harness is open or shorted, Headlamp Relay 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
- B2663 indicates Headlamp Relay Output Short to Battery.
- Common causes
- Common causes include Faulty Headlamp Relay, Headlamp Relay harness is open or shorted, Headlamp Relay 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 B2663 Description
What are the Possible Causes of the DTC B2663?
- Faulty Headlamp Relay
- Headlamp Relay harness is open or shorted
- Headlamp Relay circuit poor electrical connection
- Faulty Vehicle Security Module
How to Fix the DTC B2663?
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 B2663 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.
Need more information about the B2663 code?
Need more information on how to fix the B2663 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2663 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B2663 Ford — Headlamp Relay Output Short to Battery
- B2663 Lincoln — Headlamp Relay Output Short to Battery
- B2663 Mercury — Headlamp Relay Output Short to Battery
Frequently Asked Questions about B2663 Code
1. What does the OBDII code B2663 mean?
B2663 indicates a problem with the headlamp relay circuit, specifically a short to the battery, which could cause the headlamps to malfunction.
2. What are the common symptoms of code B2663?
Symptoms include headlamps staying on when they shouldn’t, flickering lights, or failure of the headlamps to turn off.
3. What causes the B2663 code to appear?
The code is typically caused by a short circuit in the headlamp relay wiring, a malfunctioning headlamp relay, or damaged connectors.
4. Can I drive with the B2663 code active?
It’s not recommended, as the headlamp malfunction can impair visibility or drain the battery if the lights remain on.
5. How is the B2663 code diagnosed?
A technician will inspect the headlamp relay circuit, check for damaged wiring, and test the relay for proper function using a multimeter.
6. What repairs can fix code B2663?
Repairs may include replacing the headlamp relay, repairing or replacing damaged wiring, or cleaning and securing electrical connectors.
7. How much does it cost to fix the B2663 code?
The cost can vary but typically ranges from $50 to $200, depending on whether the issue is with the relay, wiring, or connectors.
8. Can I fix the B2663 code myself?
If you’re comfortable with electrical work, you can inspect and replace the relay or check for wiring damage, but complex issues may require a professional.
9. Will clearing the code solve the problem?
Clearing the code without fixing the underlying issue is only a temporary solution; the code will likely return.
10. How can I prevent the B2663 code from occurring again?
Regularly inspect your vehicle's electrical system for wear, keep wiring and connectors clean, and replace components at the first sign of failure.
Discuss the causes and fixes for B2663 OBDII Code
Code B2663 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
