AutoCodes – Generic – B2201

B2201 Code - No Communication With Traffic MasterModule

Quick Answer

The Body Control Module (BCM) monitors the Traffic MasterModule. Common causes include Faulty Traffic MasterModule, Traffic MasterModule harness is open or shorted, Traffic MasterModule circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2201 indicates No Communication With Traffic MasterModule.
Common causes: Common causes include Faulty Traffic MasterModule, Traffic MasterModule harness is open or shorted, Traffic MasterModule circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,570

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 10, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2201 Description

The Body Control Module (BCM) monitors the Traffic MasterModule. The BCM sets the OBDII code when the Traffic MasterModule is not to factory specifications.

OBDII Code B2201 - No Communication With Traffic MasterModule - AutoCodes.com — B2201 Code - No Communication With Traffic MasterModule

What does this mean?

What are the Possible Causes of the DTC B2201?

Faulty Traffic MasterModule
Traffic MasterModule harness is open or shorted
Traffic MasterModule circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2201?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2201 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2201 code?

Need more information on how to fix the B2201 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2201 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2201 Chrysler — Calibration Mismatch
B2201 Dodge — Calibration Mismatch
B2201 Infiniti — Communication Error 1
B2201 Jeep — Calibration Mismatch
B2201 Nissan — Communication Error 1
B2201 RAM — Calibration Mismatch

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2201 Code

What does the OBDII code B2201 mean?

Code B2201 indicates that there is no communication between the vehicle's control modules and the Traffic Master Module, which is responsible for managing traffic-related information.

What are the common symptoms of code B2201?

Symptoms may include the failure of traffic-related systems to function, warning lights on the dashboard, or an inability to retrieve traffic data in navigation systems.

What causes code B2201 to appear?

Possible causes include a malfunctioning Traffic Master Module, damaged wiring or connectors, software issues, or communication faults between modules.

How can I diagnose code B2201?

Start by scanning the vehicle with an OBDII scanner to confirm the code. Then, inspect the Traffic Master Module, wiring harness, connectors, and perform a communication test between control modules.

Can code B2201 affect other systems in the vehicle?

Yes, it can indirectly impact features like navigation, traffic alerts, and system integrations that rely on traffic-related data.

How can I fix code B2201?

Repairs may involve checking and repairing damaged wiring, replacing the Traffic Master Module if faulty, or updating software to restore communication.

Is it safe to drive with code B2201?

It’s generally safe to drive, but you may experience limited functionality in traffic-related systems, which can impact navigation or traffic updates.

How much does it cost to repair code B2201?

Repair costs can vary widely, ranging from $100 to $500 or more, depending on whether you need wiring repairs, module replacement, or software updates.

Can software updates resolve code B2201?

Yes, in some cases, updating the vehicle’s software can restore communication and resolve the issue if the problem is caused by outdated firmware.

What tools are needed to troubleshoot code B2201?

You’ll typically need an OBDII scanner, a multimeter to test wiring, and potentially manufacturer-specific diagnostic tools for module communication testing.