pintobronco

1000 miles NO CEL.

dr.claw

I'm game not expensive anyway. As soon as my mid-pipe gets here I will do it and report back

CaymanRotary

What a trooper. I just live with the code as it causes no issues other than occasionally tripping the CEL.

pintobronco

Thanks, keep us posted as I hope this is a real solution.
al

dr.claw

I will post the make and model of the o2 just so we can be scientific with it. Looks like $130 from Amazon

Denso 234-9059 Air Fuel Sensor

pintobronco

great

Capt.Tightpants

Did this Denso a/f sensor work for anyone else?

Inabox85

why not just use mazda edit and turn of the sensor check to get ride of the CEL. that's what they did on the YouTube channel the slip angle?

dr.claw

still waiting on my mid-pipe to try this out

Capt.Tightpants

Is it free? And does it work on an Iphone? Cause I don't have mazda edit nor a windows computer.

BigCajun

iTrader: (1)

$130 for a possible fix isn't as sensible as about $40 for a proven Bluetooth dongle and smartphone app.

BigCajun

iTrader: (1)

Idk about Mazdaedit, but you can get an app and Bluetooth dongle for about $40.
https://www.unlockboot.com/best-obd-...r-iphone-ipad/

Capt.Tightpants

That can clear the CEL?

BigCajun

iTrader: (1)

Yes, but it can come back. It only takes a minute to clear it. Check to see what the code is and clear it.
Mine is sporadic, sometimes a couple of days or a couple of weeks.

Capt.Tightpants

Well damn, yeah, that's a much simpler/cheaper solution. Thanks!

boricua13

The dongle allows to reset the codes. I also believe Mazdaedit masks the CEL light, but the code stays present, which it's an issue with certain states that verifies the codes during the yearly inspections.

Capt.Tightpants

I'm going to have to keep/use my cat for emissions but plan on running the mid-pipe the rest of the time. Now, if BHR would just get them in stock!

dr.claw

Mid pipe came in! throwing it on tonight as long as I wire up the lift. Will order o2 and then report back.

Kiwiaudio

OP did say he used a failed sensor - wont that be a different story from a new one ?

dr.claw

Indeed, testing it to see if it still works with a new sensor to have a control.

JadedMarxist

Good day folks

Was wondering if this has been verified yet?

Meat Head

Add me to the list trying this out. I’ve been clearing the codes ever since installing a cat-less mid pipe. I went to the local Mazda dealership and got a failed front O2 sensor free. Installed it last night and cleared the code. Nothing this morning and typically I get one within 15 minutes. Will update as time goes on.

Meat Head

Well that was short!

I just read a new code due to trying this out with a failed front O2 in the rear bung. The P0420 is gone to be replaced 2 days later with a P0054. Might be easier to just keep clearing codes except I’ll probably wear out the OBD2 port.

MincVinyl

Again, like Inabox suggested above, why not just get mazdaedit or versatune and delete the code? You're probably wasting more money/time by trying to **** with a jerry rigged solution. Not to mention being able to mess with the tune after to change fan temps, oil injection, rpm limiters, idle, fuel, ignition, dwell.

TeamRX8

iTrader: (25)

just buy a proper metallic cat converter that will last from HJS