What do the Concept 2 PM5 Error Codes mean, and how do I fix them?

If your PM5 is throwing up an error code it can be really frustrating and spoil your workout.  What are these, what do they mean and most importantly how can you get rid of them?!

What Are Concept 2 PM5 Error codes?

The Concept 2 Error codes are simply a method for the PM5 to let you know that something is not working as intended.  If you see error codes then don't worry, problems can usually be solved quite easily.

What do the Concept 2 PM Error Codes Mean?

There are a large number of Concept 2 error codes, some come with meaningful error messages, some are very cryptic. 

If you would like to investigate further yourself a relatively comprehensive list of error codes and suggested resolutions can be found on the Concept 2 Website: Concept 2 PM5 Error Code Summary

If the error code has a specific recommendation you should of course follow that suggestion, however in most cases we recommend you follow the steps below which should resolve many common errors when using an app like asensei with a PM5.

How can I fix my Concept 2 PM5 Error Code?

Although each Concept 2 PM5 error code has a specific meaning there are a number of standard steps that you should perform that will either resolve the issue fully or make it easier to diagnose the problem.

1. Check Your Concept 2 PM5 Firmware is Up to Date

The Concept 2 PM5 firmware controls how the Performance Monitor behaves.  One of the first things to do when you see an error code is to check that the firmware is up to date - the primary reason being that newer versions of the firmware will often have fixes for bugs/errors/problems in them.  

If your firmware is not up to date you should update it first.  We've written a guide to checking and updating PM5 firmware to help you: How do I upgrade my PM5 Firmware?

2. Check Your App is Up To Date

Sometimes when your Concept 2 throws up an error it is when it's connected to an app such as Ergdata or asensei.  You should check you are on the most recent version of any app running so that you benefit from any fixes made by the app developer since your last update.  You can check for updates in the Apple Appstore.

The latest version number and release notes for the asensei app are documented here: Latest asensei app release.

3. Check your Phone/Tablet is up to date

It's generally good practice to update your iPhone or iPad operating system to the latest release.  Although relatively rare sometimes issues arise in certain versions, meaning that Bluetooth connectivity can be less reliable.  This can be the case on a major release of an operating system, and often a number of smaller releases will follow shortly afterwards to fix bugs.  The latest versions of operating systems can sometimes add improvements too.

4. Check you do not have multiple apps trying to connect to the PM5

The PM5 can really only connect to a single app at a time.  This means that you can't run asensei and Ergdata simultaneously for example. 

You should be able to connect your Heart Rate monitor to the PM5 at the same time as an app, although sometimes it can be worth trying without that.

5. Reach out to support with logfiles

If all of the above steps are complete and you are still having problems then you may wish to reach out to [e-mail] ideally providing your logfiles.

To share your asensei logfiles from inside the asensei app:

1. Hit the Hey asensei [+] button in the bottom left of the Up Next screen
2. On the menu that appears choose My asensei
3. Scroll down on the screen that appears and choose Send diagnostics - this will open up an email window and send the logfiles for asensei's engineers to analyse.