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Author Topic: 1.8t - SAI Delete question - 16795 (P0411)  (Read 7277 times)
TheRamon
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« on: May 18, 2016, 06:43:16 AM »

Dear Gurus,

I have physically removed the SAI Secondary Air Intake pump on my Seat Ibiza 1.8t. I have not removed / replaced my N112 and N249 with resistors.
The car keeps throwing me a 16795 (P0411) - Secondary Air Injection System: Incorrect Flow Detected. (Obviously)

I'd like to remove my SAI from the tune too, so my first thought was ESKONF.



According to S4Wiki there are two bit pairs that have something to do with the SAI.

Byte 5 = NC NC EKP SLP
Byte 6 = ULT UAGR SLV NWS

SLP=J299 SAI PUMP RELAY
SLV=N112 SAI RELAY

Now for the funky part, I've heard that disabling / "resistor-ing" the N112 will mess up fuel trims. Is this true? Would I fix the CEL and Fault code just by coding out SLP? Or should I remove SLV too, and perhaps ULT=N249 Schubumluftventil too? (And then remove them physically of course)

I might have missed something. Any ideas?
Thank you in advance!
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- Seat Ibiza Cupra 1.8 20VT
k0mpresd
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« Reply #1 on: May 18, 2016, 08:01:52 AM »

yeah, you missed cdsls. what actually disables sai diag.
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TheRamon
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« Reply #2 on: May 23, 2016, 08:53:38 AM »

Right, thank you! So I have to disable diagnostics as well.
That's basically changing CDSLS to "0" right? Meaning you disable SAI diagnostics. What about CDSLSE?

Can anyone confirm the following addresses for my file? I'm kind of doubting that I've found the right ones.

CDSLS - 181A7
CDSLSE - 181A8
CWSLS - 181B7

Thank you in advance!  Grin
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6L20vt
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« Reply #3 on: May 23, 2016, 10:34:30 PM »

Right, thank you! So I have to disable diagnostics as well.
That's basically changing CDSLS to "0" right? Meaning you disable SAI diagnostics. What about CDSLSE?

Can anyone confirm the following addresses for my file? I'm kind of doubting that I've found the right ones.

CDSLS - 181A7
CDSLSE - 181A8
CWSLS - 181B7

Thank you in advance!  Grin

take a look to my file, i have deleted sai
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TheRamon
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« Reply #4 on: May 25, 2016, 05:01:00 AM »

Thank you so much! But I cannot see any SLS related changes in your two files. Both CWSLS and CDSLS are 0x01 in your file.

Anyhow, I am guessing I must be right changing ESKONF as described in the first post, CDSLS=0x00, CDSLSE=0x00, and leaving CWSLS as is.
Anyone disagree?

Cheers and thanks guys!
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giles92
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« Reply #5 on: May 25, 2016, 07:13:54 AM »

ESKONF is only for if you want to unplug the relay (SLP) and (SLV) N112 solenoid that provides vacuum to the combi valve. I would use MSLUB and mslbas to solve the incorrect flow code if you have that defined in your map pack.
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TheRamon
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« Reply #6 on: May 25, 2016, 09:38:35 AM »

Ah right! Becomes clear now. I want to remove them yeah, since I have physically removed the SAI. So ESKONF and CDSLS is the way to go I think.
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- Seat Ibiza Cupra 1.8 20VT
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