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  #1  
Old 05-07-2005, 06:52 PM
 
Join Date: May 2005
Posts: 1
Default 97 ford f150 02 sensor problem

I have a 97 f150 4.2L 4x4 and I keep getting a po141 code. I have replaced the downstream o2 sensor twice on bank one. But the code keeps coming back up. Any help please.
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  #2  
Old 05-09-2005, 04:16 PM
 
Join Date: Jan 2005
Posts: 735
Default RE: 97 ford f150 02 sensor problem

With a scan tool check the other o2 sensors, they sould lead the sensor behind the cat, between .1 -.9v .
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  #3  
Old 05-20-2005, 09:34 PM
 
Join Date: Jan 2005
Posts: 8
Default RE: 97 ford f150 02 sensor problem

I am not certain of the code but if I am not mistaken, that could be the sensor for the Cats, meaning you may have innsuficiant Cat quality. Which all that means is you are polluting to much and your CEL will be on in the dash. Replacing a cat is too expensive.
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  #4  
Old 05-23-2005, 01:13 PM
 
Join Date: Jan 2005
Posts: 735
Default RE: 97 ford f150 02 sensor problem

I agree, if the sensors are working then its probably the cat
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  #5  
Old 06-07-2005, 03:25 PM
 
Join Date: Jun 2005
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Posts: 5
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Default RE: 97 ford f150 02 sensor problem

I had an O2 sensor code, and I believe it was the P141: 1st Bank Lean.
I'm pretty sure, anyway.
It ended up being exhaust leaks between the downpipes and the maniofolds.

I may be kickin' dandelions in left field, but I thought I'd throw in my two bits.

Miles
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Dunno, but we'll get there sooner or later.
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  #6  
Old 06-16-2005, 12:13 PM
 
Join Date: Jun 2005
Posts: 1
Default RE: 97 ford f150 02 sensor problem

hi guys! new to board and I'm going to jump right in ! I had a97 5.4 that continued to show this code and if you check out the pcv hose behind the throttle body ,you might find the rubber nipple from the intake to the pcv hard hose either melted inside or cracked on the outside and this causes a lean code to show up!!! the pcv hose comes complete from Ford with pcv valve, hard hose and rubber nipple . the price was around $24.00 , much cheaper fix than o2 sensor!!! I found out the hard way by replacing the sensor first!! hope this helps!
2 Dawgs
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  #7  
Old 08-27-2007, 03:40 PM
 
Join Date: Aug 2007
Posts: 1
Default RE: 97 ford f150 02 sensor problem

I had the lean coads for banks 1 and 2 as well. Finally for this melted tube replaced it and POW the engine runs smooth.
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  #8  
Old 08-28-2007, 11:48 AM
 
Join Date: May 2006
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Posts: 30
Default RE: 97 ford f150 02 sensor problem

I had lean codes on my 98 with 4.6, replaced the O2 sensors and a fuel pressure sensor only to have the code still come on. Turned out it was the MAF sensor, once that was replaced all was good and have not had a problem for months
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98 F150 XLT
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Old 08-28-2007, 11:48 AM
 
 
 
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02, 150, 50, 97, bank, code, crown, f150, ford, location, o2, performance, po141, sensor, victoria

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