← View Generic C1170 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
C1170: C1170: Brake System Pressure Sensor Circuit Malfunction
on 2018 BMW X5
Fix Cost
$100 - $500
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 C1170 Mean on 2018 BMW X5?
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's hydraulic pressure.
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Symptoms
- • Brake pedal feels spongy
- • brake pedal may be soft or hard to press
- • ABS light may be illuminated
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Common Causes
- • Faulty brake system pressure sensor
- • clogged brake lines
- • air in brake system
- • faulty ABS module
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How to Fix C1170 on 2018 BMW X5
1. Check brake fluid level and top off if necessary. 2. Bleed brake system to remove air. 3. Replace faulty brake system pressure sensor. 4. Check and replace clogged brake lines.
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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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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with C1170
C1168
Sequential Code
C1168: Wheel Speed Sensor Malfunction
Medium
C1169
Sequential Code
C1169: ABS System Malfunction
Medium
C1171
Sequential Code
C1171: Left Front Suspension Strut Friction Bushing Fault
Medium
C1172
Sequential Code
C1172: 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