AIR / FUEL RATIO (AF) ERROR

FlashPro questions & answers specific to the 2006-2011 Americas Civic Si
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dvergara
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AIR / FUEL RATIO (AF)

Post by dvergara »

Can you help me with this. I have 2 cars (civic if FA5 k20z3) that already had a very old tuning. I Download the latest update and upload my map .. after this the 2 cars have check engine . AIR / FUEL RATIO (AF) sensor (Sensor1) circuit out of range Hight

AUTO # 1
P1157

AUTO # 2
P1172
P2A00

Can you tell me if this is something I can adjust? or is a software problem. If I charge the old map the cars are no longer checked
dvergara
Posts: 88
Joined: Fri May 05, 2017 7:37 am
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AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

Can you help me with this. I have 2 cars (civic if FA5 k20z3) that already had a very old tuning. I Download the latest update and upload my map .. after this the 2 cars have check engine . AIR / FUEL RATIO (AF) sensor (Sensor1) circuit out of range Hight

AUTO # 1
P1157

AUTO # 2
P1172
P2A00

Can you tell me if this is something I can adjust? or is a software problem. If I charge the old map the cars are no longer checked
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Spunkster
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Re: AIR / FUEL RATIO (AF) ERROR

Post by Spunkster »

Can you post the calibrations you are using?

What is the exact year of these vehicles? Where are you located? Have you swapped ECUs?
dvergara
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Re: AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

Civic SI FA5 2009, The car was bought in the USA but we are in Panama.
Engine original stock .. header and exhaust skunk2. intake Hy, dense injectors 410cc
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Hondata
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Re: AIR / FUEL RATIO (AF) ERROR

Post by Hondata »

dvergara wrote: If I charge the old map the cars are no longer checked
I'd say the o2 sensor itself has died from vibration, but what do you mean here?
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dvergara
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Re: AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

the problem is that if I put an old map the check ingen no longer appears
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Hondata
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Re: AIR / FUEL RATIO (AF) ERROR

Post by Hondata »

Can you post the old and new calibrations?
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dvergara
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Re: AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

Here I send the two maps. I really appreciate your help
Attachments
OLD_MAP.fpcal
(23.25 KiB) Downloaded 139 times
NEW MAP.fpcal
I deleted the CAMS configuration here to prevent anyone from copying my map
(23.14 KiB) Downloaded 122 times
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Re: AIR / FUEL RATIO (AF) ERROR

Post by Hondata »

There's a lot of tuning differences between the calibrations (fuel trim, fuel tables, ignition, cam etc). I suspect that you fuel trims are getting very large with the new calibration and that is causing the error. Can you provide a datalog?
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dvergara
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Re: AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

thanks for your help. Attached here 2 logs
Attachments
k20-410cc_calle_v4-170927-000.fpdl
(477.71 KiB) Downloaded 126 times
k20-410cc_calle_v5-170927-000.fpdl
(2.58 MiB) Downloaded 106 times
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Hondata
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Re: AIR / FUEL RATIO (AF) ERROR

Post by Hondata »

It is running very, very rich. You need to tune the fuel tables. Also the WOT compensation are leaner than 12.5:1 so it is running closed loop the whole time, even WOT.
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Re: AIR / FUEL RATIO (AF) ERROR

Post by dvergara »

the oxygen sensor was damaged. Thank you
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