← View Generic C1401 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

C1401: C1401: Brake System Pressure Sensor Circuit Malfunction

on 2018 BMW X5

Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2018 BMW
X5
⚠️

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 C1401 Mean on 2018 BMW X5?

The brake system pressure sensor circuit has malfunctioned, preventing the brake system from functioning properly.
⚠️

Symptoms

  • • Brake pedal feels spongy
  • • brake light on dashboard
  • • reduced braking performance
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Common Causes

  • • Faulty brake system pressure sensor
  • • wiring issue
  • • sensor connector corrosion
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How to Fix C1401 on 2018 BMW X5

1. Disconnect battery, clear code. 2. Inspect and clean sensor connector. 3. Replace faulty sensor if necessary.

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Parts for 2018 BMW X5

Brake system pressure sensor Shop ↗ Sensor connector Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C1401

C1399 Sequential Code

C1399: Wheel Speed Sensor Malfunction

Medium
C1400 Sequential Code

C1400: Anti-lock Brake System (ABS) Fault

Medium
C1402 Sequential Code

C1402: Rear Suspension Control Module (RSCM) Fault

Medium
C1403 Sequential Code

C1403: 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