← View Generic C0398 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
C0398: C0398: Wheel Speed Sensor 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 C0398 Mean on 2018 BMW X5?
The wheel speed sensor malfunction code indicates that the vehicle's anti-lock braking system (ABS) has detected an issue with one or more wheel speed sensors, which are responsible for monitoring wheel speed and rotation.
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Symptoms
- • ABS warning light on
- • traction control system malfunction
- • vehicle may vibrate or pull to one side
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Common Causes
- • Faulty wheel speed sensor
- • sensor wiring damage
- • sensor mounting issue
- • faulty ABS module
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How to Fix C0398 on 2018 BMW X5
1. Check and clean wheel speed sensor wiring and connections. 2. Replace faulty wheel speed sensor. 3. Check and adjust sensor mounting. 4. Update ABS module software if necessary.
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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 C0398
C0396
Sequential Code
C0396: Electronic Stability Control (ESC) Malfunction
Medium
C0397
Sequential Code
C0397: Traction Control System Malfunction
Medium
C0399
Sequential Code
C0399: ABS System Malfunction
Medium
C0400
Sequential Code
C0400: Brake 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