← View Generic B3437 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2019 Ford F150 PICKUP
B3437: B3437: Exterior Lighting Malfunction
on 2019 Ford F150 PICKUP
Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2019 Ford
F150 PICKUP
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Important for 2019 Ford F150 PICKUP Owners
Before starting repairs, verify which engine your 2019 Ford F150 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does B3437 Mean on 2019 Ford F150 PICKUP?
The B3437 code indicates a malfunction in the exterior lighting system, such as the headlights, taillights, or turn signals.
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Symptoms
- • Dim or inoperative exterior lights
- • warning lights on the dashboard
- • or erratic lighting behavior.
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Common Causes
- • Faulty headlight or taillight bulbs
- • wiring issues
- • or a malfunctioning lighting control module.
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How to Fix B3437 on 2019 Ford F150 PICKUP
1. Check and replace faulty bulbs. 2. Inspect and repair or replace wiring as needed. 3. Update or replace the lighting control module if necessary.
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Need Maintenance Info for Your F150 PICKUP?
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Related Diagnostic Codes
Other codes that may appear with B3437
B3435
Sequential Code
B3435: Power Window Regulator Malfunction
Medium
B3436
Sequential Code
B3436: Seat Position Sensor Circuit Malfunction
Medium
B3438
Sequential Code
B3438: Immobilizer System Malfunction
High
B3439
Sequential Code
B3439: Audio System Malfunction
Medium
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system