ElectricalModerate⚠️ Professional Recommended

U0201

Q: What does OBD2 code U0201 mean?

U0201 means: Lost Communication With Actuator/Solenoid Driver Module B. The vehicle's main network has lost communication with a second body actuator/solenoid driver module.

Lost Communication With Actuator/Solenoid Driver Module B

The vehicle's main network has lost communication with a second body actuator/solenoid driver module.

SeverityModerate

CategoryElectrical

Est. Repair Cost$150-$450

Code TypeNetwork

DIY RepairProfessional

⚡ Common Causes

›Blown fuse
›Damaged wiring
›Failed driver module

⚠️ Symptoms

›Check engine light
›Various body functions may not respond (varies by vehicle)

✅ How to Fix — Step by Step

Step 1:Check module fuse
Step 2:Inspect wiring
Step 3:Replace module if it does not respond

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Test Light
✔Wiring Diagram
✔Basic Hand Tools

Using the correct diagnostic tools helps identify the root cause of U0201 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: As with U0200, identify the specific module for your vehicle model before ordering replacement parts.

Frequently Asked Questions

What does OBD2 code U0201 mean?+

U0201 stands for Lost Communication With Actuator/Solenoid Driver Module B. The vehicle's main network has lost communication with a second body actuator/solenoid driver module.

What causes code U0201?+

Blown fuse; Damaged wiring; Failed driver module

How do I fix code U0201?+

Check module fuse; Inspect wiring; Replace module if it does not respond

How much does it cost to fix U0201?+

Estimated repair cost for U0201 is $150-$450.

Is U0201 DIY-friendly?+

U0201 typically requires professional equipment and a qualified mechanic.