AutoCodes – Mercury – B2251 Mercury

B2251 Mercury Code - Parklamp Output Relay Driver Circuit Failure

Quick Answer

The Generic Electronic Module (GEM) monitors the Parklamp Output Relay Driver Circuit. Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp 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
B2251 Mercury indicates Parklamp Output Relay Driver Circuit Failure.
Common causes
Common causes include Faulty Headlamp Switch, Headlamp Switch harness is open or shorted, Headlamp 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 604
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 09, 2019
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Code B2251 Mercury Description

The Generic Electronic Module (GEM) monitors the Parklamp Output Relay Driver Circuit. The GEN sets the OBDII code when the Parklamp Output Relay Driver Circuit is not to factory specifications.
OBDII Code B2251 Mercury - Parklamp Output Relay Driver Circuit Failure - AutoCodes.com
B2251 Mercury Code - Parklamp Output Relay Driver Circuit Failure

What are the Possible Causes of the DTC B2251 Mercury?

  • Faulty Headlamp Switch
  • Headlamp Switch harness is open or shorted
  • Headlamp Switch circuit poor electrical connection
  • Faulty Generic Electronic Module (GEM)

How to Fix the DTC B2251 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 B2251 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.

Need more information about the B2251 Mercury code?

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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 B2251 Mercury Code

1. What are the common symptoms of OBDII code B2251 in a Mercury related to the Parklamp Output Relay Driver Circuit Failure?

- Common symptoms include non-functioning park lamps, dim or flickering park lamps, or park lamps that stay on regardless of the vehicle's status.

2. What are the possible causes of the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure in a Mercury?

- Potential causes could be a faulty relay, damaged wiring or connectors in the park lamp circuit, a defective park lamp switch, or a malfunctioning body control module.

3. How can I diagnose the OBDII code B2251 in my Mercury for the Parklamp Output Relay Driver Circuit Failure?

- Diagnosis involves visually inspecting the park lamp circuit for any visible damage, testing the park lamp relay, checking the wiring and connectors for continuity, and using a multimeter to test voltage at various points in the circuit.

4. Can I continue driving my Mercury with the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure?

- It is generally safe to drive the vehicle with this code, but it is important to address the issue promptly to ensure proper operation of the park lamps for visibility and compliance with road regulations.

5. How can I repair the OBDII code B2251 in my Mercury for the Parklamp Output Relay Driver Circuit Failure?

- Repair typically involves replacing a faulty park lamp relay, repairing or replacing damaged wiring and connectors, replacing a defective park lamp switch, or reprogramming or replacing the body control module if necessary.

6. Are there any DIY tips for fixing the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure in my Mercury?

- DIY enthusiasts can start by checking fuses related to the park lamps, inspecting the relay for signs of damage, and ensuring all connectors in the circuit are securely connected before seeking professional help if needed.

7. Will resetting the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure in my Mercury make the issue go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the fault. It is crucial to diagnose and repair the problem to prevent further complications.

8. How much can I expect to pay for fixing the OBDII code B2251 in my Mercury for the Parklamp Output Relay Driver Circuit Failure?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a dealership or auto repair shop.

9. Can extreme weather conditions affect the likelihood of encountering the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure in my Mercury?

- Yes, extreme temperatures or moisture can potentially exacerbate electrical issues in the park lamp circuit, leading to a higher chance of encountering this specific OBDII code.

10. Is it necessary to have the OBDII code B2251 related to the Parklamp Output Relay Driver Circuit Failure in my Mercury fixed immediately?

- While immediate action may not be critical, it is recommended to address the problem promptly to ensure the proper functioning of the park lamps and avoid potential safety hazards or legal issues related to non-working exterior lighting.

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