WB reading richer then normal

[Foxbodyguy49]

haven't made any changes to the tune but all of a sudden my MTX-l WB is reading richer then it use to and giving somewhat more erractic readings. ive had it in the car for maybe 6 months and only free air calibrated it when first installed. heres a datalog and my tune.

 

[a91what]

That is how it appears to be acting in the datalog. Do a free air calibration again, it is recommended to do every 6 months

 

[Foxbodyguy49]

Thanks yeah cause from the datalog everything else seems normal my Pw and dutycycle at idle is inline with my normal readings just the wideband seems off I’ll re-cal it tmmrw when it’s not raining here and report back

 

[Foxbodyguy49]

So I had a really hard time re-calibrating the sensor it kept reading error E2 and I checked the resistance of the pins 3-4 on the sensor it read right around 3.5 and the heater circuit had voltage. I finally got it to calibrate but it still seems a bit off on readings from what it use to be. Next step is to order a brand new sensor to see if that fixes it.

 

[Foxbodyguy49]

Update , I changed out the sensor with a new one and all is back to normal reading wise. Here’s an alternative sensor that I’m using https://www.amazon.com/gp/aw/d/B07K1SMQYH?psc=1&ref=ppx_pop_mob_b_asin_title it’s a little cheaper then the Bosch and they will replace of defective and seems to be working perfectly.