Good morning.
Couple weeks back I upgraded my cam and header on my 2017 FLHXS. A couple days later I see the engine light. I get the error code P0152. Rear O2 sensor high / engine rich. Flashed the ECM with a PV3 and used the file from Fuelmoto. Cleared the code. Rode again. Engine light back on. My first inclination is to buy a new rear O2 sensor. What do you all suggest?
Thanks.

 

ask Fuel Moto who provided you with the tune, or try posting here for the forum experts to see

https://www.hdforums.com/forum/ignit...-injection-55/

 

What did Fuel Moto say?

 

I sent him 2 messages. I haven’t heard back yet.

 

I received my response from FuelMoto. I have the Dynojet Power Vision 3. Fuelmoto yesterday updated their site with the new Autotune feature on the PV3. Have to update Firmware to get the Autotune function on my PV3. After that is done I run the Autotune on the file they gave me. As is commonly suggested, I will ride for 20 minutes 3 times. After each 20 minute ride in Autotune I save the information and apply it to the ECM. This should get rid of the rich fuel error code. Fingers crossed. Videos they linked were informative.

 

Sometimes people do damage 02 sensors when changing headers. Just keep that in mind.

 

Very useful information: https://university.fuelmotousa.com/a...h-dynojet-pv3/

 

Did you run the auto tune and did that fix your problem?

 

I ran it once. Did it wrong somehow the simple instructions weren't so simple to follow when I was using it. Had to dress cable, shove it underneath my butt, and wedge the PV3 in my pocket. Must have disabled it when in my pocket. Has been raining. Will try on Thursday.

 

Be careful sometimes if your Engine ran too Rich the o2 sensor got full of carbon and even if you return to an accurate calibration It might see bad data due being soaked in carbon. Run the bike with chart open and see the lamba data at various RPM.