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just got back from kwik fit MOT center, and failed my MOT due to CO, readings are 0.535%, which it should be below 0.300%, can someone please tell which part i need to change? and how much it would roughly cost.
the guy told me to get a diagnostic test done on it to see if i get any faults on the lamba sensor, the code reader i have is the VCDS on my laptop, and could this bring up the fault?

PLEASE HELP!

and the last night i see the EPC light come on and then go off, most of the time its off than on, dont knw if this helps but just thought i input this, just in case this is the problem which i dont knw

Epc is the engine power control warning it means there is an engine problem which will no doubt be the problem of your emissions failing. Read the codes and see what the problem is mate all codes should still be stored

Mine failed on emissions the other day - 3% CO2 (was 10x over on the other 2 items as well). It was fixed by ragging the car a fair bit, and a bottle of injection/fuel cleaner, and revving it while sitting still to get it hot just before being tested.

Went through fine after that, a cheap option that might be worth trying though? (Worth noting mine had been standing for ~2months prior to the test.)

Do the code read first because if the epc light has been in there is a problem in there sonewhere

ok just done a diagnostic test, and this is the result, hopefully someone can explain to me what it means.

3 Faults Found:
17978 - Engine Start Blocked by Immobilizer
P1570 - 35-10 - - - Intermittent
16955 - Brake Switch (F): Implausible Signal
P0571 - 35-10 - - - Intermittent
16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit
P0130 - 35-10 - - - Intermittent
Readiness: 0000 0000

it says immobilizer, but dont have any problem starting car.

Definitely needs the rake switch replacing, they're about £8 and easy Peasy not too sure on the lambdas or the Imobiliser :s

what is a rake switch? never heard of that before on any car.

Brake...

why did the last 2 messages get deleted?

Was wonderin this. :s

only wanted somehelp or advice for my car. but thanks for ur help ben.

Well I dunno if you read what I put but I meant brake switch it's a deadman switch behind the brake pedal which is 8 pounds from vw it may just need resetting but for the sake of it it may as well be changed unfortunately buddy I can't help you with he other bits

yeh thanks for that buddy, ive got one on order already. just need some advice on the other faults seeing that i failed MOT. need it back on road.

Yeah thats the easy job you repairing it yourself or getting the garage to do it? Because the simple fix is to replace the lambda sensor whichever is broken. Invest in a Haynes manual and get your hands dirty