Fix Cost
$150 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System
📖 What Does B0140 Mean?
The B0140 code indicates a malfunction in the seat position sensor circuit, which is responsible for monitoring the position and movement of the vehicle's seats.
⚠️
Symptoms
- • Seat position sensor error message on the dashboard
- • seats may not move or may move erratically
- • seat belt warning lights may be illuminated.
🔍
Common Causes
- • Faulty seat position sensor
- • wiring issues
- • seat motor failure
- • or a problem with the seat control module.
Fix Guide
🛠️
Possible Solutions
1. Disconnect the battery to reset the system. 2. Check and clean the seat position sensor and wiring. 3. Replace the faulty seat position sensor. 4. Check and replace the seat motor if necessary. 5. Update the seat control module software if necessary.
Required Parts
Tools
Multimeter
Wire tester
Torx screwdriver
👨🔧
Need a Pro?
Complex codes like B0140 can be tricky. Don't risk it if you're unsure.
Quick Stats
Severity
Medium
DIY Friendly
No
Est. Time
1-2 hours
🔗
Related Diagnostic Codes
Other codes that may appear with B0140
B0100
Same System
B0100: Seat Position Sensor Malfunction
Medium
B0101
Same System
B0101: Body System Code B0101 - Lighting
Medium
B0102
Same System
B0102: Immobilizer System Malfunction
Medium
B0103
Same System
B0103: Audio System Malfunction
Medium
B0104
Same System
B0104: Airbag System Malfunction
High
B0105
Same System
B0105: Climate Control Blower Motor Fault
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