B1371 Mercury Code - Illuminated Entry Relay Circuit Failure
Quick Answer
The Body Control Module (BCM) monitors the Illuminated Entry Relay. Common causes include Faulty Illuminated Entry Relay, Illuminated Entry Relay harness is open or shorted, Illuminated Entry 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
- B1371 Mercury indicates Illuminated Entry Relay Circuit Failure.
- Common causes
- Common causes include Faulty Illuminated Entry Relay, Illuminated Entry Relay harness is open or shorted, Illuminated Entry 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 B1371 Mercury Description
What are the Possible Causes of the DTC B1371 Mercury?
- Faulty Illuminated Entry Relay
- Illuminated Entry Relay harness is open or shorted
- Illuminated Entry Relay circuit poor electrical connection
How to Fix the DTC B1371 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 B1371 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 B1371 Mercury Code
1. What does the OBDII code B1371 mean for a Mercury?
The B1371 code indicates an "Illuminated Entry Relay Circuit Failure," which means the relay circuit that controls the entry lighting system is malfunctioning.
2. What are the common symptoms of the B1371 code in a Mercury vehicle?
Symptoms include interior lights not turning on or staying on too long, entry lights flickering, or intermittent operation of the illuminated entry system.
3. What causes the B1371 code to appear?
Common causes include a faulty illuminated entry relay, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. Can a blown fuse trigger the B1371 code?
Yes, a blown fuse in the illuminated entry system can interrupt the circuit and cause the B1371 code to appear.
5. How do you diagnose the B1371 code in a Mercury?
Diagnosis involves checking the relay, inspecting the wiring and connectors for damage or corrosion, testing the BCM, and verifying the fuse integrity.
6. Can I still drive my Mercury with the B1371 code active?
Yes, the code typically doesn’t affect vehicle drivability, but the illuminated entry system may not function properly.
7. How is the B1371 code fixed in a Mercury?
Repairs may include replacing the illuminated entry relay, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/replacing the BCM if necessary.
8. Is the B1371 code related to the battery?
It can be indirectly related if a weak or faulty battery causes electrical system malfunctions, but the code itself pertains to the illuminated entry relay circuit.
9. How much does it cost to repair the B1371 code in a Mercury?
Repair costs can vary but typically range from $50 to $200, depending on whether the issue is with the relay, wiring, or BCM.
10. Can clearing the B1371 code with a scan tool fix the problem?
Clearing the code may temporarily reset the system, but the underlying issue must be addressed to prevent the code from returning.
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