B2216 low

Central Gateway (CGW) Module Internal Fault — the hub that routes data between the vehicle’s CAN networks (Chrysler/Dodge/Jeep)

The B2216 code means the vehicle's onboard diagnostic system has detected: Central Gateway (CGW) Module Internal Fault — the hub that routes data between the vehicle’s CAN networks (Chrysler/Dodge/Jeep). This is a low severity code.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
moderate
Estimated cost
Varies — depends on the specific component this manufacturer-specific code points to on your vehicle. Diagnose before buying parts.

Manufacturer-specific code. B2216 is a manufacturer-specific DTC, so its exact definition can differ by make, model, and year. Use the meaning above as a general guide, and always confirm it against your vehicle manufacturer's official service information (or a make-specific scan tool) before diagnosing or replacing parts.

BlueDriver Bluetooth Pro Scanner
Read Body Codes
BlueDriver Bluetooth Pro Scanner

Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.

Check Price on Amazon

Affiliate links — we earn a commission at no extra cost to you.

What Are the Symptoms of B2216?

  • Check Engine or a related warning light on
  • Exact symptoms depend on the specific system this code covers for your make
  • A make-specific scan reveals which subsystem and circuit is involved

What Causes B2216? (Most Likely First)

  • A fault in the specific component or circuit this code monitors (the exact part varies by manufacturer) High
  • Damaged wiring, a corroded connector, or a poor ground in that circuit Moderate
  • A related sensor or control module reporting or causing the fault Moderate

Can I Still Drive with B2216?

Yes, but fix soon. B2216 is rated low severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring the light.

Frequently Asked Questions

Does B2216 mean the same thing on every vehicle?

No. B2216 is a manufacturer-specific diagnostic trouble code, so its exact meaning varies by make, model, and year. Always confirm it against your vehicle manufacturer's service information before diagnosing or replacing parts.

What does B2216 most likely indicate?

Central Gateway (CGW) Module Internal Fault — the hub that routes data between the vehicle’s CAN networks (Chrysler/Dodge/Jeep). Treat this as a general guide and verify the specifics for your vehicle.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose B2216?

  1. Confirm your exact make, model, and year first — B2216 is manufacturer-specific and can mean different things across brands.

  2. Read B2216 with an enhanced/make-specific scan tool and check your manufacturer's official service information for the precise definition and procedure.

  3. Inspect the wiring, connectors, and grounds for the indicated circuit before replacing any part.

Sources 2

This page is built from documented references. Verify against your own service info before repair work.

  • autocodes.comDodge and Jeep pages
  • engine-codes.comJeep page

Which Vehicles Commonly Get B2216?

  • 2010-2022 BMW 3 Series
  • 2012-2023 Mercedes-Benz C-Class
  • 2008-2020 Lexus ES
  • 2014-2023 Audi A4

Explore More

Search codes Vehicle-specific fixes Guides By make

Was this helpful?

Send this to whoever is fixing the car — your mechanic, or the person asking what the light means.

Browse by symptom → Read repair guides → Fixes by vehicle →