Having issues with my 02 sensors, dont believe its sensors?!

[Nathan Quigley]

code read the car this weekend and got loads of codes, some being for door locks etc like normal lol as i need to replace the door locks for drivers side and passenger side but other than that im getting LOADS of codes for the O2 sensors and find it hard to believe that they are at fault ive checked fuse 43 and seems fine i have noticed the car goes through fuel pretty quick and want to get this rectified to see if that is the issue, the car is remapped but to my knowledge it still has the O2 sensors and maf sensor still mapped in.. i have posted a full scan below..

N112 MAPPED OUT!
N249 MAPPED OUT!

====================================================================================================

Address 01: Engine Labels: 06A-906-032-AJQ.clb
Part No: 06A 906 032 T
Component: 1.8L R4/5VT 01 0003
Coding: 05510
Shop #: WSC 33278
VCID: 2F6DA5BDED1D4B327C-515A

8 Faults Found:
17526 - Oxygen (Lambda) Sensor Heating; B1 S2
P1118 - 35-00 - Open Circuit
17840 - Secondary Air Injection Solenoid Valve (N112)
P1432 - 35-00 - Open Circuit
17695 - Boost Pressure Control Valve (N249)
P1287 - 35-00 - Open Circuit
17522 - Oxygen (Lambda) Sensor; B1 S2
P1114 - 35-00 - Internal Resistance too High
17521 - Oxygen (Lambda) Sensor; B1 S1
P1113 - 35-00 - Internal Resistance too High
16524 - Oxygen (Lambda) Sensor B1 S2
P0140 - 35-00 - No Activity
17963 - Charge Pressure
P1555 - 35-10 - Maximum Limit Exceeded - Intermittent
16518 - Oxygen (Lambda) Sensor B1 S1
P0134 - 35-10 - No Activity - Intermittent
Readiness: 0000 0000

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Address 03: ABS Brakes Labels: 1J0-907-37x-ABS.lbl
Part No: 1J0 907 379 AF
Component: ASR 20 IE CAN 0001
Coding: 13404
Shop #: WSC 00000
VCID: 75E157D54FC131E2F6-4B18

No fault code found.

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Address 08: Auto HVAC Labels: 1M0-820-043.lbl
Part No: 1M0 820 043 C
Component: 1M-CLIMATRONIC X0604
Coding: 00041
Shop #: WSC 06441
VCID: 224B5C89AECFF65AE3-2592

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 6Q0 909 605 A
Component: 1G AIRBAG VW5 0004
Coding: 12615
Shop #: WSC 06441
VCID: 356197D50F4171E236-4B00

1 Fault Found:
00588 - Airbag Igniter; Driver Side (N95)
32-00 - Resistance Too High

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Address 17: Instruments Labels: 1M0-920-xx2-17.lbl
Part No: 1M0 920 901 D
Component: S5-KOMBIINSTR. VDO V02
Coding: 05404
Shop #: WSC 00001
VCID: 275D4D9DC5ED1372B4-515A

Subsystem 1 - Part No: IMMO
Component: IDENTNR: SEZ7Z0Y0646925
IMMO-IDENTNR: SEZ7Z0Y0646925

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
Part No: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 06441
VCID: 70EF66C130A314CA25-515A

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 1J0-959-799.lbl
Part No: 1J0 959 799 AH
Component: 8N Zentral-SG Komf. 0001
Coding: 04097
Shop #: WSC 06441
VCID: 04073A11141B186AF1-4B18

Subsystem 1 - Part No: 1J0959802F
Component: 8N Tõrsteuerger. FS0002F

Subsystem 2 - Part No: 1J0959801G
Component: 8N Tõrsteuerger. BF0002r

Subsystem 3 - Part No: 1J4959811C
Component: 8N Tõrsteuerger. HL0002r

Subsystem 4 - Part No: 1J4959812C
Component: 8N Tõrsteuerger. HR0002H

6 Faults Found:
00953 - Interior Light Time limit
25-00 - Unknown Switch Condition
01329 - Convenience System Data Bus in Emergency Mode
35-00 - -
01332 - Door Control Module; Passenger Side (J387)
49-10 - No Communications - Intermittent
00928 - Locking Module for Central Locking; Front Driver Side (F220)
54-10 - Incorrectly Equipped - Intermittent
01179 - Incorrect Key Programming
35-00 - -
00943 - Heated Exterior Mirror; Driver Side (Z4)
35-00 - -

End-------------------------(Elapsed Time: 02:46)--------------------------

 

[smutts]

If the engine is "remapped" for more fuel ('cos it makes power!)
then won't the O2 sensors signal the engine management to take that fuel back out?
Has someone unplugged O2 sensors & bodged resistors to keep the mapped fuel in?

Door locks? Welcome to the club.

 

[Nathan Quigley]

Nothing has been bodged or unplugged as it was remapped in my ownership lol so I know it can't be the map however the map has made me notice that it uses fuel like crazy obviously like you said more power = more fuel but I mean it drinks it where before it wasn't too bad, hopefully I find time to do some investigating today

 

[Nathan Quigley]

Also one fault is no activity - intermittent which if unplugged surely this fault would display open circuit?

 

[Nathan Quigley]

Find it weird as I am getting both open circuit faults and no activity - intermittent

 

[Connor H]

why is it giving you codes for n112 and n249 if theyre mapped out? before mine were mapped out any code relating to them two would put the car in limp mode. whats your boost gauge reading?

 

[Nathan Quigley]

Boost gauge reads 15-20psi I've heard I should resistor the N112 and the N249... as they play games with the adaptive fuel trim is that right? Have you installed resistors or left the things plugged in?

 

[mty12345]

Have you tried deleting all the codes and then seeing what ones come back? If not, then that's what i would do, as some of those codes might be historic ones.

If they are all current faults, then it's hard to say. It could just be 2 dodgy sensors, or possibly the wiring is dodgy. You have to be careful with the wiring for the O2 sensors, as a short between the heater circuit and the data circuit can easily fry your ECU!

As for the N112 and N249 affecting the fuel trims, I'm not 100% sure tbh, i very much doubt it. The only way they could affect it, would be if they triggered a fault code that caused the ECU to run in open-loop mode, rather than closed-loop. Easy way to tell would be to look at your short term fuel trims when the engine is warm. If they are moving around then it's closed loop, if they are at zero then it's open loop.

 

[smutts]

Am I so glad that I don't have to deal with these.

 

[Connor H]

hmm so its not in limp mode then. apparently resistors dont work from what ive read over the years of old forums, i kept my n249 but my SAI is unplugged and i dont get codes. n112 i believe id still plugged in also. soz i canny help ya