B2201 — No Communication With Traffic MasterModule

What Does B2201 Mean?

B2201 is a diagnostic trouble code indicating: No Communication With Traffic MasterModule. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of B2201

⚠️ Check Engine Light (MIL) illuminated
⚠️ No Communication With Traffic MasterModule not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ System warning light illuminated

Common Causes

🔍 Faulty No Communication With Traffic MasterModule
🔍 Wiring or connector issue in No Communication With Traffic MasterModule circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does B2201 mean?

B2201 indicates: No Communication With Traffic MasterModule. The vehicle's computer has detected that the No Communication With Traffic MasterModule is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code B2201?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with B2201 for extended periods may cause additional problems.

How much does it cost to fix B2201?

Repair costs for B2201 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect No Communication With Traffic MasterModule and related wiring
🔧 Replace faulty No Communication With Traffic MasterModule

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

B2201: No Communication With Traffic MasterModule