← View Generic C0638 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2019 Ford F150 PICKUP
C0638: C0638: Brake System Pressure Sensor Circuit Malfunction
on 2019 Ford F150 PICKUP
Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
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 C0638 Mean on 2019 Ford F150 PICKUP?
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's ability to regulate pressure.
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Symptoms
- • Spongy brake pedal
- • low brake fluid level
- • brake warning light on
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Common Causes
- • Faulty brake pressure sensor
- • clogged brake fluid lines
- • air in brake system
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How to Fix C0638 on 2019 Ford F150 PICKUP
1. Check brake fluid level and top off as needed. 2. Bleed brake system to remove air. 3. Replace faulty brake pressure sensor.
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Need Maintenance Info for Your F150 PICKUP?
Get oil capacity, filter specs, and torque settings for your specific 2019 Ford F150 PICKUP.
View 2019 Ford F150 PICKUP SpecsParts for 2019 Ford F150 PICKUP
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with C0638
C0636
Sequential Code
C0636: Wheel Speed Sensor Malfunction
Medium
C0637
Sequential Code
C0637: ABS System Malfunction
High
C0639
Sequential Code
C0639: Rear Suspension Strut Friction Bushing Fault
Medium
C0640
Sequential Code
C0640: Steering Column Position Sensor Circuit 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