P164A error code - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 29 (permalink) Old 12-14-2010, 01:22 AM Thread Starter
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P164A error code

Hi All,

My check engine light came on and it is a P164A O2 Sensor Positive Current Trim Circuit Performance (Bank 1 Sensor 1). Checked with my own tool and re set. Light came back on in a couple of hours. My dealer can't get me in until after Christmas which really makes me un happy. They told me because it is a deisel they need to keep the truck for 48 hours to diagnose the problem. It's been quite a while since I had a diesel, just wondering why they wouls need to kwwp of for 48 hours?? Also, anyone know if driving around like htis coudl cause any issues??

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post #2 of 29 (permalink) Old 12-23-2010, 02:19 AM Thread Starter
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FYI for anyone who drives in a lot of snow and extended cold weather.

My dealer got me in a couple of days ago and they tell me the reason for the check engine light and P164A code (apparently there were other NOX sensor related codes there that I could not see with me cheap OBD-II tool as well) is that the air filter was plugged with snow. They say the reason it took so long to get in is because they have had over a dozen 2011's back with the same issue since we had our last big snow fall last week. My tech checked with another local dealer and same thing, the 2011's are lined up to get in. My dealer figures Ford will come out with a tech bulletin pretty soon (but who know's, that's just what he tells me) to fix this issue. He says it is an extremely high percentage here (Edmonton, Alberta, Canada) of 2011's that have come back since the last big snowfall / cold spell with this issue.

Dealer replaced the soggy air filer N/C.

For now I will install a winter front and see if Ford does anything.

And YES, I do know that the manual says to watch out for this...but there is no way I am going out every mourning in -20 to -40C and checking if there is snow in my air filter. I have been driving for 25 years and have never had to do it, no way I will start now. She will be sold if the winter front or Ford doesn't fix the problem.

But I STILL love this truck!!!!

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post #3 of 29 (permalink) Old 12-23-2010, 02:30 AM
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The 08-10 are really bad for this to. I keep a spare filter in my cab in the winter. I have been so plugged off i couldnt do over 10 kmh without the EGTS going threw the roof i couldnt even get the filter out had to bring it into a heated shop and let it thaw out so i could change.

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post #4 of 29 (permalink) Old 12-23-2010, 02:30 AM
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Quote:
Originally Posted by darren32 View Post
FYI for anyone who drives in a lot of snow and extended cold weather.

My dealer got me in a couple of days ago and they tell me the reason for the check engine light and P164A code (apparently there were other NOX sensor related codes there that I could not see with me cheap OBD-II tool as well) is that the air filter was plugged with snow. They say the reason it took so long to get in is because they have had over a dozen 2011's back with the same issue since we had our last big snow fall last week. My tech checked with another local dealer and same thing, the 2011's are lined up to get in. My dealer figures Ford will come out with a tech bulletin pretty soon (but who know's, that's just what he tells me) to fix this issue. He says it is an extremely high percentage here (Edmonton, Alberta, Canada) of 2011's that have come back since the last big snowfall / cold spell with this issue.

Dealer replaced the soggy air filer N/C.

For now I will install a winter front and see if Ford does anything.

And YES, I do know that the manual says to watch out for this...but there is no way I am going out every mourning in -20 to -40C and checking if there is snow in my air filter. I have been driving for 25 years and have never had to do it, no way I will start now. She will be sold if the winter front or Ford doesn't fix the problem.

But I STILL love this truck!!!!

Thanks
The LMM Dmaxs has the same issue. Do cold air intakes void your warranties? if not maybe you can change where it sucks air in or something so those of you who deal with a lot of snow can stop the issue. Seems Ford could have caught this. Just thinking out loud.

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post #5 of 29 (permalink) Old 12-23-2010, 04:24 AM
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I just got the P164A code tonight. I have 1933 miles on my truck and live in Alaska. Hopefully a new air filter will fix my problems. I really don't want to have my truck at the dealership over Christmas and New Years.

If anyone finds a permanent fix to keep this from reoccurring please keep us posted!
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post #6 of 29 (permalink) Old 12-23-2010, 12:44 PM Thread Starter
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My engine light is back on after only a day and 50 kM since I got it back from the dealer. Same code, P164A and P2A00. Air filter is clean and dry. So I have no idea, 4 days at the dealer doesn't seem to have helped and I can't aford for it to go back for 4 more days. If anyone can help please do!

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post #7 of 29 (permalink) Old 12-23-2010, 02:10 PM
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No offense but you really let it sit at the dealer for 4 days to have the air filter replaced?

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post #8 of 29 (permalink) Old 12-23-2010, 02:17 PM Thread Starter
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Yes sir, and none too happy about it either.
They say that is how long it took them to "figure out what the problem was". Being that the light is back on and the filter is dry looks like they didn't figure anything out.......

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post #9 of 29 (permalink) Old 12-23-2010, 06:33 PM
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Yes sir, and none too happy about it either.
They say that is how long it took them to "figure out what the problem was". Being that the light is back on and the filter is dry looks like they didn't figure anything out.......

Taking mine to the dealership on Wednesday. Hopefully it doesn't take them 4 days!

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post #10 of 29 (permalink) Old 12-24-2010, 01:29 PM Thread Starter
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mc5150, please let me know what they find, my dealer is getting nowhere on this issues. The say "Ford is not calling us back", nice excuse.

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