← View Generic C1590 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
C1590: C1590: Brake System Pressure Sensor Circuit Malfunction
on 2018 BMW X5
Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2018 BMW
X5
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Important for 2018 BMW X5 Owners
Before starting repairs, verify which engine your 2018 BMW X5 has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does C1590 Mean on 2018 BMW X5?
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
- • unusual brake noise
- • or brake light illuminated on the dashboard
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Common Causes
- • Faulty brake pressure sensor
- • clogged brake fluid lines
- • air in the brake system
- • or worn-out brake pads
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How to Fix C1590 on 2018 BMW X5
1. Check brake fluid level and top off if necessary. 2. Bleed the brake system to remove air. 3. Replace faulty brake pressure sensor. 4. Inspect and replace worn-out brake pads.
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Need Maintenance Info for Your X5?
Get oil capacity, filter specs, and torque settings for your specific 2018 BMW X5.
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Related Diagnostic Codes
Other codes that may appear with C1590
C1588
Sequential Code
C1588: Wheel Speed Sensor Malfunction
Medium
C1589
Sequential Code
C1589: ABS System Malfunction
Medium
C1591
Sequential Code
C1591: Left Front Suspension Strut Friction Bushing Fault
Medium
C1592
Sequential Code
C1592: Electric Power Steering (EPS) System Fault
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