← View Generic P0920 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

P0920: P0920: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

on 2018 BMW X5

Fix Cost
$500 - $1500
Parts & Labor
Difficulty
4/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
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 P0920 Mean on 2018 BMW X5?

The Transmission Control Module (TCM) has detected an internal error, which may be caused by a faulty TCM, wiring issue, or other internal transmission component failure.
⚠️

Symptoms

  • • Transmission slipping
  • • hesitation
  • • or refusal to engage gears
  • • unusual noises
  • • or warning lights on the dashboard.
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Common Causes

  • • Faulty TCM
  • • wiring issue
  • • internal transmission component failure
  • • or software glitch.
🛠️

How to Fix P0920 on 2018 BMW X5

1. Clear the code and monitor the transmission's behavior. If the issue persists, replace the TCM. 2. Check and repair any wiring issues. 3. Inspect and replace any faulty internal transmission components.

🔧

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Parts for 2018 BMW X5

Transmission Control Module Shop ↗ Wiring harness Shop ↗ Transmission components Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0920

P0918 Sequential Code

P0918: Transmission Range Sensor Circuit Malfunction

Medium
P0919 Sequential Code

P0919: Transmission Advanced System - Pressure Control Solenoid 'A' Circuit Low Voltage

Medium
P0921 Sequential Code

P0921: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

Medium
P0922 Sequential Code

P0922: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

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