← View Generic P0801 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

P0801: P0801: Transmission Control Module (TCM) Performance Problem

on 2018 BMW X5

Fix Cost
$200 - $1000
Parts & Labor
Difficulty
3/5
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 P0801 Mean on 2018 BMW X5?

The TCM has detected a performance problem, such as a malfunctioning transmission solenoid or a faulty transmission sensor, which is affecting the transmission's ability to function properly.
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Symptoms

  • • Transmission slipping
  • • hesitation
  • • or failure to engage gears
  • • unusual noises
  • • or difficulty shifting into gear
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Common Causes

  • • Faulty transmission solenoid
  • • faulty transmission sensor
  • • clogged transmission filter
  • • low transmission fluid level
  • • or a malfunctioning transmission control module
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How to Fix P0801 on 2018 BMW X5

1. Check transmission fluid level and condition; 2. Scan for any other trouble codes; 3. Test transmission solenoids and sensors; 4. Replace faulty solenoids or sensors; 5. Clean or replace transmission filter; 6. Update transmission control module software if necessary

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Need Maintenance Info for Your X5?

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Parts for 2018 BMW X5

Transmission solenoid Shop ↗ Transmission sensor Shop ↗ Transmission filter Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0801

P0799 Sequential Code

P0799: Transmission Control System Malfunction

Medium
P0800 Sequential Code

P0800: Transmission Control System Malfunction

Medium
P0802 Sequential Code

P0802: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0803 Sequential Code

P0803: Transmission Control Module (TCM) Range/Performance Issue

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