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Old Feb 26, 2026 | 07:46 AM
  #11  
Max Headflow's Avatar
Max Headflow
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From: poway
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Looks like the update killed the ECM. You can try to connect the PV4 to the ECM and see if it still can see the ECM..
 
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Old Apr 6, 2026 | 06:31 PM
  #12  
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Yardstick
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From: SA TX
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I had this problem with the PV4. I fixed it by returning it to the saved original tune. That is an option under the tune menu. Then check to see if you have the latest update to the tuner.

Are you using an iPhone or android? If android you’ll have to talk with the tech at dynojet to resolve.
 
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Old Apr 6, 2026 | 09:42 PM
  #13  
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fairol85
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From: Malaysia
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Originally Posted by Yardstick
I had this problem with the PV4. I fixed it by returning it to the saved original tune. That is an option under the tune menu. Then check to see if you have the latest update to the tuner.

Are you using an iPhone or android? If android you’ll have to talk with the tech at dynojet to resolve.

My bike was fixed by harley dealer..they do bench flash the ecm to factory setting before I can use my PV4.it just 10minutes job to reset the ECM using Diagnose Tools
 
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