How to Troubleshoot and Fix Jeep B2204-00 DTC Code?

Like any other type of vehicle, Jeeps can develop defects and problems that impact performance and safety. 

Trouble codes are used to identify these issues. One such code is B2204-00, which indicates an ECU Configuration Mismatch issue on Jeep.

Throughout this article, we will discuss what this error code means, the reasons behind it, and how to troubleshoot and fix this issue. So, keep reading to learn more. 

What Does Jeep B2204-00 DTC Code Mean?

The B2204-00 error code is a troubleshooting code that the Jeep’s onboard computer generates. 

The basic meaning of this code is that the Jeep’s ECU is not configured with the current modification done to the Jeep. 

And, there’s a mismatch between the Jeep’s ECU and the configuration data stored on the Jeep’s computer. 

This may occur for various reasons, but the most common is that you may have modified the Jeep’s setup and not updated the ECU with this current configuration. This could be adding a new headlight, airbag, or other accessories.

Another probable cause of this B2204 code in Jeep could be a malfunctioning or mismatch issue on Radio Frequency Hub. 

Basically, after a service replacement, Jeep’s Radio Frequency Hub (RF-Hub) must be reconfigured for various parameters, like vehicle line and model year.

The RF-Hub typically generates this code when it notices discrepancies between the device’s current configuration and the data being stored in the Controller Area Network (CAN) bus system. 

In this situation, RF-Hub stores the B2204 error code. Here, you might notice a “00” digit at the end of the code. 

Basically, the “00” at the end of the code only means an ongoing issue that is currently facing your Jeep instead of a historical issue that has occurred previously but is not present right now. If we break down the code, we get the following:

  • B = Stands for Body (includes airbag and air conditioning)
  • 2 = Manufacturer Specific Code.
  • 2 = Air Metering and Fuel (Injector Circuit)
  • 04 = Specific fault index. In our case, it indicates an ECU Configuration Mismatch Issue.

B2204-00 DTC Code: What Causes ECU Configuration Mismatch Issue on Jeep?

ECU configuration mismatch is a common and typical problem that Jeep owners frequently encounter. 

Depending on the year and model of the car, the particular DTC code for ECU configuration mismatch might change, but the B2204-00 DTC code is the most regular and frequent one.

There are a number of potential causes for the Jeep ECU configuration mismatch issue. These are a few of the most noteworthy:

  1. Incorrectly programmed ECU
  2. Faulty Occupant Restraint Controller (ORC) Module
  3. Outdated Software
  4. CAN Bus communication error
  5. Vehicle modifications
  6. Malfunctioning sensors
  7. Faulty ECU
  8. Electrical system malfunction
  9. Faulty RF-Hub
  10. Improper Installation
  11. Software or firmware issues
  12. Interference
  13. Blown fuse

Read Also: How to Troubleshoot & Fix P0420 Jeep DTC Code? (Ultimate Guide)

How to Troubleshoot & Fix Jeep B2204-00 DTC Code?

As a Jeep owner, this is extremely annoying if you notice a specific diagnostic trouble code (DTC), such as B2204-00. 

Previously said, this error number denotes a Jeep ECU configuration mismatch issue. It is a serious issue that has to be resolved pretty quickly. 

But, if you know how to troubleshoot and fix this issue, you can save a significant amount of money and time. 

So, in this section, we will walk you through each step of the troubleshooting method and their simple solutions.

1. Check the Wirings, Fuses and Electrical System 

First, start troubleshooting by checking all the wiring, fuses, electrical parts, and connections that are connected with the ECU, RF-Hub, Occupant Restraint Controller, CAN Bus system, and other sensors.

Inspect the battery and charging system to make sure they are in good working order. Also check out the battery terminals and any defective parts. 

Moreover, look for any aftermarket additions or alterations you made, because those might have been installed incorrectly and could be the source of problems.

Also, check the fuses to see if any of them are blown or not. If you find any blown or damaged fuses, replace them with new ones. Here, ensure that the replacement fuse is the same as the previous one.

Besides, if you notice any damaged wires or loose connections, fix them. If needed, replace the defective wires. This might cost you around $10 to $50. 

2. Check for any Malfunctioning Sensors

If the wiring and connections are found okay, now you have to check the sensors.

To troubleshoot a faulty sensor on a Jeep, first determine which sensor is faulty. This may be accomplished by checking any logged trouble codes with a diagnostic scanner. Because Jeep displays a distinct error code for each defective sensor.

Examine the cause of the sensor’s issue when you’ve located it. To accomplish this, examine the sensor’s physical condition and wire connections for wear or damage.

When the wire and sensor both seem to be in physically excellent shape, test the sensor with a multimeter to make sure it has the right voltage and resistance.

If the sensor is determined to be malfunctioning, it has to be replaced. Depending on the defective sensor, you may have to pay between $50 and $200.

Read Also: How to Troubleshoot & Fix P2181 Jeep DTC Code? (Ultimate Guide)

3. Check the ECU

There is a very strong probability that the main ECU is somehow malfunctioning, incorrectly programmed, or running on outdated software if you are still getting the B2204-00 code.

To troubleshoot it, make sure that all the software and ECU in your Jeep are correctly programmed and updated. Because outdated and faulty software can’t communicate with Jeep’s other electrical system. 

Besides, ensure that the ECU you install is compatible with your Jeep model. Since an incompatible ECU can’t communicate with and control Jeep’s various sensors and modules, this causes an ECU configuration mismatch issue.

If there isn’t any program or compatibility issue with the ECU, there might be a possibility that the ECU itself is faulty. You may frequently find issues with your ECU by visually inspecting it. 

This visual inspection involves making sure all of your ECU’s parts are connected and working.

To identify the problematic components, you may also use a multimeter to analyze your ECU. The reading for a working component should be between 1 and 1.2 amps. If the reading exceeds this, there is a problem with the ECU.

If you find it to be defective, you might need to replace it. This might cost you anything from $650 to $750.

4. Check the RF-Hub

If this B2204-00 code still appears on your Jeep, there could be an issue with the RF-Hub. Let’s discuss how to troubleshoot it. (

First, check its software version and ensure it is updated. Besides, if you install a new RF-Hub system, and forget to configure the ECU with this new system, just configure your ECU. Most of the time, this will solve the issue.

If not, there may be another problem preventing communication between the RF-Hub and the CAN Bus system. 

So, visually check the RF-Hub and CAN Bus system for any physical damage or corrosion to detect any problems. And, make sure they are grounded properly.

When they are in fine shape but still not working, try resetting the module. To reset it, disconnect it from the battery for a few minutes and reconnect it again.

If these methods do not address the problem, you may need to replace the RF-Hub. This might cost you between $200 and $400.

Read Also: How to Troubleshoot & Fix P0522 Jeep DTC Code? (Detailed Guide)

5. Check CAN Bus System

After performing the above mentioned 4 troubleshooting methods, if you still get B2204 code, check the CAN Bus system for any issue.

To determine a CAN bus fault, start by inspecting for loose or broken electrical connections. Then, using a multimeter, inspect the CAN bus circuit for adequate voltage and ground connections.

At this point, check the voltage on any disconnected connectors between CAN HIGH and GROUND and CAN LOW and GROUND. 

For, CAN HI and GROUND terminal, voltage that results should be between 2.5 and 3.0 and for CAN LOW and GROUND terminal, it’ll be between 2.5 and 2.0 VDC. 

But a faulty system will show less than 2.0 V or greater than 3.5 V. When this value falls within the appropriate limits, the problem may be with the CAN bus itself, such as a broken transceiver or damaged software.

If you find it to be faulty, you have to take your vehicle to an expert mechanic. This might cost you around $200 to $500. 

6. Check the Vehicle Modifications and any Improper Installation

This is our last troubleshooting step if you are still getting this error code.

For various purposes, you might have to make some modifications to your Jeep. This could be installing additional headlights, taillights, a sound system, etc.

But, when this modification is done on any Jeep, you have to update your ECU with this modification, otherwise, you’ll get an ECU that can’t detect and operate these parts and will show a configuration mismatch error.

Additionally, if you made any improper installation, such as: installing incompatible parts on your jeep, ECU can’t read those parts. As a result, you also get a configuration mismatch error.

To solve this, ensure that you install the compatible parts in your Jeep and update the ECU with the newly added components.

Read Also: How to Troubleshoot & Fix P0480 Jeep DTC Code? (Detailed Guide)


There may still be some questions in your mind after reading this article. The most commonly asked questions in this area have been answered as best we could. For the answers you need, go through this FAQ.

Can you drive a Jeep with a B2204-00 DTC code?

You can still drive your Jeep if you have a B2204-00 fault code. But we won’t encourage you to do it because this code relates to several parts and sensors in a Jeep. Though they seem minor, they can cause severe damage.  

How much does it cost to fix the Jeep B2204-00 DTC code?

Usually, the cost to repair a Jeep B2204-00 code changes based on the problems, Jeep model, and component accessibility. But, if we provide an estimated price, minor problems might cost between $20 and $100, while serious problems could cost between $150 and $500.

How long does it take to resolve the Jeep B2204-00 error code?

Basically, the time required to resolve the B2204-00 error code varies based on the issues and the mechanic’s experience. If this code appears due to a software issue, it will take 1 to 2 hours to resolve. But, any serious problem might take days to resolve.


It might be tough to troubleshoot the Jeep B2204-00 DTC code issue, because everything is now controlled electronically and things are much more complex. 

But if you have a little patience and pay close attention to the details, you may quickly get your Jeep back to normal. That’s why you should become knowledgeable about auto diagnostics.

Read Also: How to Troubleshoot & Fix P1745 Jeep DTC Code? (Detailed Guide)

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