Need some oxygen sensor help.

ByPopularDemand · August 22nd, 2009, 06:34 PM

My car seems to like frying O2 sensors. I threw a code p0155 for the heater circuit (can't remember which bank.) The sensors and extensions are only 8 months old and this is the third or fourth set to crap out. Should I use a brand other than the oem sensors, or am I overlooking something else that could be causing them to fail so fast? Btw I do have LT headers.

WLJohnson05 · August 22nd, 2009, 06:54 PM

maybe the tune is too rich or lean and its eating the o2s

ByPopularDemand · August 22nd, 2009, 07:29 PM

Hmm could be. Never thought of that. Could the lean or rich condition mess with the heating circuit part of the sensor? The other thing is it's only one sensor?

WLJohnson05 · August 22nd, 2009, 07:38 PM

Originally Posted by ByPopularDemand

Hmm could be. Never thought of that. Could the lean or rich condition mess with the heating circuit part of the sensor? The other thing is it's only one sensor?

im not even sure...but a pure guess would be like maybe its runnin sorta lean causing it to burn it up

stephen · August 22nd, 2009, 07:51 PM

You might check the heater circuit. Look up which pins connect to the heaters and compare the voltage on the left and right.

It could also result from an upstream air leak, but that should set a code.

ByPopularDemand · August 23rd, 2009, 01:33 PM

Originally Posted by stephen

You might check the heater circuit. Look up which pins connect to the heaters and compare the voltage on the left and right.

It could also result from an upstream air leak, but that should set a code.

Do you think they would have a voltage tester at autozone? I'll have to try that. The only other code is it says it's running lean because of the o2 not working.

RFM 40th V6 · August 23rd, 2009, 03:12 PM

I'd look at the connector and harness that the 02 connects to. Make sure you don't have any exposed wires or burned up wiring insulation. It might be shorting them out.

ByPopularDemand · August 24th, 2009, 11:55 AM

Alright. Bank 2 is the drivers side right?

stephen · August 24th, 2009, 09:33 PM

Originally Posted by ByPopularDemand

Alright. Bank 2 is the drivers side right?

According to what I could find, bank one is the side with cylinder 1 or the right side. So bank 2 is the drivers side.

ByPopularDemand · August 28th, 2009, 09:32 PM

I looked and everything wire and connectionwise seems to be ok. Wierdest thing though...I decided to drive the car to work and the code cleared itself. On the way back the cel was off. Now I am really confused. Apparently something other than a faulty o2/wiring tripped the code

ByPopularDemand · August 29th, 2009, 05:51 PM

Bump...any ideas anyone?

August 22nd, 2009, 06:34 PM	#1
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,666 iTrader: 0 reviews	Need some oxygen sensor help. My car seems to like frying O2 sensors. I threw a code p0155 for the heater circuit (can't remember which bank.) The sensors and extensions are only 8 months old and this is the third or fourth set to crap out. Should I use a brand other than the oem sensors, or am I overlooking something else that could be causing them to fail so fast? Btw I do have LT headers. __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

August 22nd, 2009, 06:54 PM	#2
WLJohnson05 MM's Database Error 2004 Mustang V6 322.8 rwhp Join Date: Mar 2007 Location: VA Posts: 13,285 iTrader: 9 reviews	maybe the tune is too rich or lean and its eating the o2s __________________ I'm trying to get rid of this stuff, feel free to make me an offer!: SCT Mass Air Flow Sensor $200 Tial Wastegate Springs $40 (10psi and 3.6psi)

August 22nd, 2009, 07:29 PM	#3
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,666 iTrader: 0 reviews	Hmm could be. Never thought of that. Could the lean or rich condition mess with the heating circuit part of the sensor? The other thing is it's only one sensor? __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

August 24th, 2009, 11:55 AM	#8
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,666 iTrader: 0 reviews	Alright. Bank 2 is the drivers side right? __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

August 28th, 2009, 09:32 PM	#10
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,666 iTrader: 0 reviews	I looked and everything wire and connectionwise seems to be ok. Wierdest thing though...I decided to drive the car to work and the code cleared itself. On the way back the cel was off. Now I am really confused. Apparently something other than a faulty o2/wiring tripped the code __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

August 22nd, 2009, 07:51 PM	#5
stephen Hardcore Enthusiast Join Date: Feb 2007 Posts: 1,262 iTrader: 0 reviews	You might check the heater circuit. Look up which pins connect to the heaters and compare the voltage on the left and right. It could also result from an upstream air leak, but that should set a code.

August 29th, 2009, 05:51 PM	#11
ByPopularDemand Hardcore Enthusiast 2000 V6 Join Date: Jan 2007 Location: Albuquerque Posts: 2,666 iTrader: 0 reviews	Bump...any ideas anyone? __________________ 2000 V6 vert Mac LT headers, Mac O/R H-pipe, Mac CAI, ASP 25% underdrive pulley(r.i.p), SCT tune, 8.8 rear and 4.10 gears.

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