I think I have a bad ECU... :/

[tt_kcalb_nevar]

I think I might have a bad ECU. Ive been trying to pass CA smog inspection for a while now and although I pass the sniffer, I continue to fail the readiness test!

Every time we scan the car the Secondary Air Injection test and EVAP test remain incomplete. I've gone through all the steps to ensure the tests complete. I've tested after driving 30 , 50, 80 miles etc. but still the tests wont complete. We even tried to clear all DTC's but for some reason it wont clear off of the ecu. We tested the SAI and EVAP system and they are all working 100%.

So, we think that the ECU might need to be replaced

I was wondering if anyone has any suggestions or if there is a way to confirm without doubt that the ecu is faulty.

Since I cant pass smog, I haven't been able to renew my registration since March and I've been driving around with a temporary tag that's since expired. So before I go out and buy a replacement ecu, I want to know if anyone out there has a working ecu (8N0 906 018 AN ecm (02 amu 225q)) that I could borrow/rent for an hour or two so that I can take my car to get tested and immediately return your ecu to you. I can provide a deposit of some sort, or you can come with me to the smog station, whichever you prefer. I just need to get this done before the police start hassling me about my registration.

ANY HELP IS GREATLY APPRECIATED!!!!


TLDR: Have bad ECU, Need working ECU to pass smog, need to borrow or rent for 1 or 2 hrs.

[Forty-six and 2]

Where are you?

[tt_kcalb_nevar]

Burbank CA 91504

[Charlie_M]

Every time we scan the car the Secondary Air Injection test and EVAP test remain incomplete. I've gone through all the steps to ensure the tests complete. I've tested after driving 30 , 50, 80 miles etc. but still the tests wont complete. We even tried to clear all DTC's but for some reason it wont clear off of the ecu. We tested the SAI and EVAP system and they are all working 100%

What codes 'wont clear off of the ECU'? Please post them.

And can you explain more about how you tested SAI and EVAP, and know they are OK? I doubt it is a bad ECU; much more likely a sensor or wiring problem.

[tt_kcalb_nevar]

What codes 'wont clear off of the ECU'? Please post them.

And can you explain more about how you tested SAI and EVAP, and know they are OK? I doubt it is a bad ECU; much more likely a sensor or wiring problem.

I scanned my car back in mid February and these are the codes that came up:

Monday,20,February,2012,19:50:24:18901
VCDS Version: Release 11.11.2 (x64)
Data version: 20120126



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Chassis Type: 8N - Audi TT
Scan: 01 02 03 08 15 17 22 35 37 45 55 56 76 77

VIN: TRUWT
-------------------------------------------------------------------------------
Address 01: Engine Labels: 06A-906-032-AMU.lbl
Part No: 8N0 906 018 AN
Component: 1.8L R4/5VT G 0004
Coding: 06710
Shop #: WSC 78391
VCID: 7DECE84077EA4FB
TRUWT AUZ5Z0B5036023

3 Faults Found:
17963 - Charge Pressure
P1555 - 35-10 - Maximum Limit Exceeded - Intermittent
16487 - Mass Air Flow Sensor (G70)
P0103 - 35-10 - Signal too High - Intermittent
17743 - Engine Torque Monitor 2
P1335 - 35-10 - Control Limit Exceeded - Intermittent
Readiness: 0000 1100

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Address 03: ABS Brakes Labels: 8N0-907-379-MK60-A.lbl
Part No: 8N0 907 379 H
Component: ESP ALLRAD MK60 0101
Coding: 0022544
Shop #: WSC 01236 785 00200
VCID: 419454B01B92EBB

2 Faults Found:
00813 - Sensor 2 for Brake Pressure (G214)
012 - Electrical Fault in Circuit - Intermittent
01314 - Engine Control Module
013 - Check DTC Memory - Intermittent

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Address 08: Auto HVAC Labels: 8N0-820-043.lbl
Part No: 8N0 820 043 A
Component: TT-KLIMAVOLLAUTOMAT D03
Coding: 00140
Shop #: WSC 01236
VCID: 2842E914C8E83A3

No fault code found.

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Address 15: Airbags Labels: 8N0-959-655.lbl
Part No: 8N0 959 655 A
Component: Airbag Front+Seite 5000
Coding: 01103
Shop #: WSC 01236
VCID: 3E6E2F4C3A6C943

No fault code found.

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Address 17: Instruments Labels: 8Nx-920-xxx-17.lbl
Part No: 8N1 920 980 E
Component: KOMBI+WEGFAHRS. M73 D14
Coding: 07244
Shop #: WSC 26130
VCID: 386239541848AA3
TRUWT AUZ5Z0B5036023

No Faults Found
or DTCs not supported by controller
or a communication error occurred

-------------------------------------------------------------------------------
Address 22: AWD Labels: 02D-900-554.lbl
Part No: 02D 900 554 C
Component: HALDEX LSC ECC 0010
VCID: 2052F134A0D8C23

1 Fault Found:
00526 - Brake Light Switch-F
27-10 - Implausible Signal - Intermittent

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Address 35: Centr. Locks Labels: 8Nx-962-267.lbl
Part No: 8N8 962 267 A
Component: Central Lock/Alarm D06
Coding: 15948
Shop #: WSC 26130
VCID: 3F9052483D669DB

9 Faults Found:
01572 - Alarm triggered by Door Contact Switch; Passenger Side
35-00 - -
01374 - Alarm triggered by Terminal 15
35-00 - -
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
00955 - Key 1
09-10 - Adaptation Limit Surpassed - Intermittent
01559 - Drivers Door
58-10 - Can't Lock - Intermittent
01560 - Passenger Door
59-10 - Can't Unlock - Intermittent
01559 - Drivers Door
61-00 - Won't De-Safe
01560 - Passenger Door
61-00 - Won't De-Safe

-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 8E0-951-177.lbl
Part No: 8N8 951 177
Component: Innenraumueberw. D09
Coding: 00001
Shop #: WSC 00000
VCID: FCEA6544ECF0C63

1 Fault Found:
01463 - Alarm triggered by Sensor for anti-theft alarm System
35-00 - -

-------------------------------------------------------------------------------
Address 55: Xenon Range Labels: 4B0-907-357-AUT.lbl
Part No: 4B0 907 357
Component: LEUCHTWEITEREGLER D004
Coding: 00010
Shop #: WSC 01236
VCID: E5DC20207F7A67B

No fault code found.

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Address 56: Radio Labels: 8E0-035-1xx-56.lbl
Part No: 4B0 035 186 H
Component: concert II NP2 0007
Coding: 00302
Shop #: WSC 00000
VCID: 255CE020BFFA27B

1 Fault Found:
00856 - Radio Antenna
36-00 - Open Circuit

End ---------------------------------------------------------------------

I have since changed the MAF sensor, brake light switch, and a few other things, but the same faults continue to come up after testing 1000 miles post item replacement, also, the parts I changed I did so with new factory replacements. One of the fault codes caught my eye and I checked against the ross-tech wiki:

01314 - Engine Control Module

01314 - Engine Control Module: No Communications
Possible Causes
CAN-Databus Wiring/Connectors from/to Engine Control Module faulty
Fault(s) stored in Engine Control Module
Engine Control Module recently flashed or re-mapped
Possible Solutions
Check CAN-Databus Wiring/Connectors from/to Engine Control Module
Check Measuring Value Blocks (MVB)
Usually Measuring Value Blocks (MVB) 125+ show the current Communication Status

01314 - Engine Control Module: Check DTC Memory
Possible Causes
Fault(s) stored in Engine Control Module
Possible Solutions
Check Engine Control Module for Fault Codes
Special Notes
Engine Control Module stored a Code which influences other Control Modules Functionality.
To clear this Fault Code you will need to correct the Problem in the Engine Control Module first.

So these are the codes that wont clear, even after trying to clear them well over 15 times using everything from a ross-tech vag com to a $2500 shop scanner.

Regarding the sai and evap, my mechanic connected his scanner to the car and tested the sai and evap system and said that the pumps/mechanical parts and everything else are working perfectly.

[tt_kcalb_nevar]

bump...

[180dan]

Why not just buy a used ecu. They're under $100 here and on ebay. Also, don't forget you'll have to deal with Immobilizer defeating........