Hello all,

I hear loud exhaust noise plus whole car vibrates when I drive between 20-30mph. I hear lapping sound in the catalytic converter unit when idling cold start and driving too. The engine light comes on sometimes. Taking reading seem the mass flow reading is too high even at warm up temperatures of engine.

Can the faulty catalytic throw mass flow readings off the range? Looking at MVBs, I see the 02 sensor control value seem high too. Any hints and tips would be appreciated.

Thursday,05,May,2016,15:20:40:46890
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
VCDS Version: 15.7.4.1
Data version: 20160216
www.Ross-Tech.com


VIN: License Plate: TTAUDI



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Address 01: Engine Labels: 06A-906-032-AMU.lbl
Control Module Part Number: 8N0 906 018 AN
Component and/or Version: 1.8L R4/5VT G 0003
Software Coding: 06710
Work Shop Code: WSC 65728
Additional Info: TRUWT28N321018606 AUZ5Z0A9310089
VCID: 7DFA30ED774644D615-5102
2 Faults Found:

16795 - Secondary Air Injection System
P0411 - 35-00 - Incorrect Flow Detected
16519 - Oxygen (Lambda) Sensor B1 S1; Heating Circuit
P0135 - 35-10 - Malfunction - Intermittent

Readiness: 0010 1101

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Address 01: Engine (8N0 906 018 AN)

15:21:22 Group 002
720 /min Engine RPM
35.3 % Engine Load
2.46 ms Ave. Inj. Period
5.14 g/s Air Mass Flow

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Address 01: Engine (8N0 906 018 AN)

15:21:27 Group 002
760 /min Engine RPM
34.6 % Engine Load
2.46 ms Ave. Inj. Period
5.11 g/s Air Mass Flow

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Address 01: Engine (8N0 906 018 AN)

15:21:33 Group 003
720 /min Engine RPM
5.14 g/s Air Mass Flow
3.1 % Throttle Opening
6.8 °ATDC Ign. Timing

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Address 01: Engine (8N0 906 018 AN)

15:22:31 Group 003
720 /min Engine RPM
5.17 g/s Air Mass Flow
3.1 % Throttle Opening
8.3 °ATDC Ign. Timing

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Address 01: Engine (8N0 906 018 AN)

15:22:41 Group 004
760 /min Engine RPM
14.140 V System Voltage
87.0°C Coolant Temp.
21.0°C Intake Air Temp

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Address 01: Engine (8N0 906 018 AN)

15:22:46 Group 005
760 /min Engine RPM
33.8 % Engine Load
0.0 km/h Vehicle Speed
Idle

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Address 01: Engine (8N0 906 018 AN)

15:22:57 Group 006
720 /min Engine RPM
33.8 % Engine Load
21.0°C Intake Air Temp
-4.7 % Lambda

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Address 01: Engine (8N0 906 018 AN)

15:23:25 Group 030: Heated O2 Sensor Status
111 HO2S#1
110 HO2S#2
Bin. Bits
Bin. Bits

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Address 01: Engine (8N0 906 018 AN)

15:23:29 Group 031
0.835 V O2S1 Voltage
0.180 V O2S2 Voltage
Bin. Bits
Bin. Bits

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Address 01: Engine (8N0 906 018 AN)

15:23:34 Group 032: O2S Adaptation
-6.9 % Idle Value
-0.8 % Part Throttle Value
Bin. Bits
Bin. Bits

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Address 01: Engine (8N0 906 018 AN)

15:23:44 Group 033: Cat-Forward
-10.2 % Control Value
0.415 V O2S1 Voltage
Bin. Bits
Bin. Bits