Limp mode Lambda?

[DJ-LIAMC]

I now have a boost gauge and my boost only reads 7psi which is limp mode, seems the car has been like this since buying it, had the engine light on read for faults and this 1 came up.
17584 1 O2S Lambda Correction Behind Catalyst. Control limit reached P1176-35-00 Intermittant

I cleared the code but still only boosting 7psi, so still limp mode, which lambda sensor has the fault pre-cat or post-cat as i need to buy a new 1, also did an idle log on block 06 and lambda was -3.1% this normal?

[DJ-LIAMC]

does anyone know which 02 sensor this is cause i need to buy one?

[adam cupra 20vt]

17584/P1176/004470 - Bank1: O2 (Lambda) Correction Behind Catalyst: Control Limit Reached
Possible Causes

* Intake Air System leaking
* Oxygen Sensor(s) and/or Oxygen Sensor Control faulty

Possible Solutions

* Check Intake Air System for Leaks (False Air)
* Check Oxygen Sensor(s) and/or Oxygen Sensor Control (all of them!)


Does that help?

[DJ-LIAMC]

Thanks, ill try and look for a leak, would this fault cause limp mode?

[DJ-LIAMC]

Had a look for a leak but no luck finding one, did a log on bloxk 2 for air mass flow and the highest i got got was around 110g/s i know this is low but is it because im in limp mode?

[DJ-LIAMC]

Did another scan

Chassis Type: 1M - Seat Leon
Scan: 01,02,03,08,15,17,19,22,35,46,56

-------------------------------------------------------------------------------
Address 01: Engine
Controller: 1ML 906 032
Component: 1.8l R4/5VT 0001
Coding: 10510
Shop #: WSC 14390
VSSZZZ1MZ3R135153 SEZ7Z0C2023446
4 Faults Found:
16523 - Oxygen (Lambda) Sensor B1 S2: Response too Slow
P0139 - 35-00 - -
17584 - Shareware Version. To Decode all DTCs
P1176 - 35-10 - Please Register/Activate - Intermittent
18010 - Shareware Version. To Decode all DTCs
P1602 - 35-10 - Please Register/Activate - Intermittent
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-10 - - - Intermittent
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Controller: 8N0 907 379 G
Component: ESP FRONT MK60 0101
Coding: 0019469
Shop #: WSC 00001
1 Fault Found:
01314 - Engine Control Module
013 - Check DTC Memory - Intermittent

I have disconnected the maf and reset ecu thats why i got faults 16486, 18010, but the others not too sure about, Sensor B1 S2: Response too Slow i think this is the post-cat sensor so need to replace that? Cleared all codes still in limp mode.

[DJ-LIAMC]

did some logs after clearing codes before.
Lambda block 6 idle revving

Group A: '006
RPM Load Temperature. Lambda
TIME
STAMP /min % °C %
0 720 22.6 54 -3.1
0.4 760 21.8 54 -3.1
0.8 720 22.6 54 -3.1
1.2 760 21.8 54 -3.1
1.61 800 27.8 54 -3.1
2.01 1520 36.1 54 -3.1
2.41 2200 26.3 53 -3.1
2.83 2640 23.3 51 -3.1
3.23 3000 24.1 51 -3.1
3.63 3920 48.1 50 -3.1
4.13 5280 50.4 48 -3.1
4.53 6160 45.9 46 -3.1
4.94 6000 12.8 45 -3.1
5.34 5200 14.3 45 -3.1
5.74 4520 13.5 45 -3.1
6.24 3760 13.5 46 -3.1
6.64 3200 15 47 -3.1
7.04 2680 15 48 -3.1
7.45 2200 15 48 -3.1
7.95 1560 14.3 48 -3.1


And maf (in limp mode)


Group A: '002
RPM Load Inj. On Time Mass Flow
TIME
STAMP /min % ms g/s
0 2960 15 1.7 8.89
0.38 2920 15.8 1.7 9.03
0.78 2920 23.3 3.4 18.36
1.29 2960 76.7 7.82 51.81
1.78 3040 42.9 3.4 5.83
2.18 3160 101.5 10.2 75.69
2.58 3240 111.3 10.88 68.97
2.98 3400 111.3 10.88 73.36
3.4 3520 112 10.54 75.28
3.9 3720 111.3 10.88 79.89
4.3 3840 111.3 10.88 82.28
4.81 4000 110.5 10.88 85.08
5.21 4120 111.3 10.88 87.28
5.61 4240 112 11.22 91.89
6.1 4440 110.5 10.88 94.44
6.5 4560 113.5 11.56 100.92
6.92 4680 108.3 10.54 101.44
7.42 4840 114.3 11.56 105.56
7.82 4960 112 11.56 107.5
8.22 5080 113.5 10.88 109.78
8.62 5200 116.5 11.56 113.39
9.03 5320 113.5 10.88 116.44
9.43 5440 115 10.88 119.72
9.85 5560 112 10.54 120.44
10.33 5720 112.8 11.9 123.44
10.74 5800 111.3 11.56 126.5
11.26 5960 112 11.56 128.94 higest g/s
11.75 5960 15 1.36 2.25
12.15 5280 12 0 6.44
12.65 4520 12.8 0 9.64
13.03 3920 12.8 0 9.39
13.45 3400 12.8 0 8.22
13.85 2920 13.5 0 7.61
14.26 2440 13.5 0 6.33
14.74 1880 12.8 0 4.83
15.16 1440 12.8 1.36 3.94
15.65 1120 15.8 1.7 3.36
16.05 960 18 2.04 3.36
16.45 840 20.3 2.04 3.69
16.85 760 21.1 2.38 3.69
17.27 760 22.6 2.38 3.25
17.67 760 24.8 2.38 3.58
18.17 720 24.1 2.38 3.58
18.57 720 24.8 2.38 3.53
18.97 720 24.8 2.38 3.92
19.38 720 24.8 2.38 3.56




Do these look ok? Maf is six months old, Thanks, sorry dont know how to set it out

[DJ-LIAMC]

Ok ordered the rear lambda gonna fit tonight hopefully also got some cataclean to put in, it best get out of limp mode or i will be very Pissed off

[DJ-LIAMC]

ok Got new sensor but wire connection plug didnt fit! slight difference

[DJ-LIAMC]

New sensor fitted still in limp mode! car is shit might sell it