Hi all

Just took these fault codes of my sons MkIV 2LGTI. He hasn't had the car long and the fuel econonomy is poor and does occasionally mis fire. I cleared the codes a week ago so this is after one weeks running. I've checked the plugs under the sill and they don't appear coroded. I suspect the sensor is us but maybe someone with more experience can confirm this? Also which sensor is it referring to the one in the manifold or the one after the CAT? Thanks in advance

Cheers, Ian.

Monday,30,August,2010,14:33:44:46862
VCDS Version: Beta 912.0
Data version: 20091201

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Address 01: Engine Labels: 06A-906-018-AQY.lbl
Control Module Part Number: 06A 906 018 EF
Component and/or Version: 2.0l R4/2V MOTR HS V04
Software Coding: 00031
Work Shop Code: WSC 00490
9 Faults Found:
16525 - Oxygen (Lambda) Sensor B1 S2; Heating Circuit: Malfunction
P0141 - 35-00 - -
16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
P0140 - 35-00 - -
16518 - Oxygen (Lambda) Sensor B1 S1: No Activity
P0134 - 35-10 - - - Intermittent
17536 - Fuel Trim; Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
16523 - Oxygen (Lambda) Sensor B1 S2: Response too Slow
P0139 - 35-00 - -
16500 - Engine Coolant Temp. Sensor (G62): Implausible Signal
P0116 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16685 - Cylinder 1: Misfire Detected
P0301 - 35-10 - - - Intermittent
16555 - Fuel Trim; Bank 1: System Too Lean
P0171 - 35-00 - -