PO141 with new O2 sensors installed - TCCoA Forums
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post #1 of 4 (permalink) Old 11-07-2007, 07:11 PM Thread Starter
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PO141 with new O2 sensors installed

During a headswap, we pulled the motor and replaced both upstream O2's with new Ford specific sensors. Now I'm getting this code and have cleared it twice, but it keeps coming back. Any ideas?

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post #2 of 4 (permalink) Old 11-07-2007, 07:18 PM
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thats a downstream o2 code. i offer no other help sorry.

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post #3 of 4 (permalink) Old 11-07-2007, 08:41 PM
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swap the rear O2s with each other

reset computer

if code still comes back as bank 1 sensor 2, then you got a problem with the catalytic converter on bank 1 (passenger side bank which contains cylinder #1)

if it goes to bank 2 sensor 2, then it is a faulty sensor

and if it is just a faulty sensor, just have the rear O2 functions switched off with a tune
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post #4 of 4 (permalink) Old 11-08-2007, 06:05 AM
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You can clean your O2's Here is a tech article on how to clean the sensors.

Generally the cause of the fouled O2's is not a bad sensor. It is usually a vacuum leak or an old worn out fuel pressure regulator.

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post #5 of 4 (permalink) Old 11-08-2007, 03:55 PM
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I've added CEL codes to my website to help your guys out by the way. I'll be adding to the lists as I have time. http://www.blueovalchips.com/index.php?action=dtc_codes

Cleaning them will help in some cases. But if the heater is burned up you need to replace it.

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