B1485 Mercury Code - Brake Pedal Input Circuit Battery Short
Quick Answer
Fused battery voltage is supplied to the Brake Pedal Position (BPP) Switch from Smart Junction Box (SJB) fuse along the circuit. Common causes include Faulty Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position Switch 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
- B1485 Mercury indicates Brake Pedal Input Circuit Battery Short.
- Common causes
- Common causes include Faulty Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position Switch 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 B1485 Mercury Description
What are the Possible Causes of the DTC B1485 Mercury?
- Faulty Brake Pedal Position Switch
- Brake Pedal Position Switch harness is open or shorted
- Brake Pedal Position Switch circuit poor electrical connection
- Faulty Smart Junction Box (SJB)
How to Fix the DTC B1485 Mercury?
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 B1485 Mercury 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 B1485 Mercury Code
1. What does the OBDII code B1485 mean on a Mercury vehicle?
The code B1485 indicates a "Brake Pedal Input Circuit Battery Short," meaning there's an electrical short in the circuit related to the brake pedal input.
2. What are the common symptoms of the B1485 code in a Mercury?
Common symptoms include the brake lights staying on, the brake lights not working, or issues with cruise control functionality.
3. What causes the B1485 code to appear?
The most common causes are damaged wiring, a short to battery voltage in the brake pedal circuit, or a faulty brake light switch.
4. Can a faulty brake light switch trigger the B1485 code?
Yes, a malfunctioning brake light switch is a common cause of this code and should be inspected during diagnosis.
5. How do I diagnose the B1485 code on a Mercury?
Start by inspecting the brake pedal input circuit for damaged wiring, loose connections, or corrosion, and test the brake light switch for proper operation.
6. Can I still drive with the B1485 code active?
While the vehicle may still be drivable, this code can affect brake light functionality, which is a safety concern and should be addressed promptly.
7. How is the B1485 code repaired?
Repairs may involve fixing or replacing damaged wiring, repairing connections, or replacing the brake light switch if it is faulty.
8. How much does it cost to fix the B1485 code?
The cost depends on the exact issue but typically ranges from $50 to $150 for a brake light switch replacement or more if wiring repair is required.
9. Can a blown fuse cause the B1485 code?
While less common, a blown fuse related to the brake light circuit could potentially contribute to this issue and should be checked.
10. Will clearing the B1485 code fix the problem?
Clearing the code will reset the warning temporarily, but the underlying issue must be repaired to prevent the code from returning.
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