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Model specific boards => Golf mk4 => Topic started by: Matthew Green on 16 October 2011, 16:40

Title: EMISSION WORKSHOP WARNING, NO ERRORS WHEN RAC CHECKED CAR.......
Post by: Matthew Green on 16 October 2011, 16:40

Hello I am new to the forum but need some urgent help please. My car shut down after a 2 hr drive into London after stuck in traffic with the warning "emission error" showing. After calling the RAC they did a check but the car showed no errors. The exhaust emission check (sign with a lightning bolt) light is on before i start the car but disappears when started. The car now starts and drives now recovered, and sounds fine but was sounding very rough when stuck in traffic before it broke down. Any help will be greatly recieved. Looking on google it could poss be the exhaust manifold valve or pss lambdor sensor

Title: Re: EMISSION WORKSHOP WARNING, NO ERRORS WHEN RAC CHECKED CAR.......
Post by: richw911 on 16 October 2011, 16:56

Sounds like it could well be the lambda sensor that should throw a code though  :undecided:

Get yourself one of these will save you time and money in the future :

http://www.ebay.co.uk/itm/VW-VAG-Diagnostic-Fault-Code-Reader-CAN-OBD2-/160665436011?pt=UK_Diagnostic_Tools_Equipment&hash=item256867ff6b

Title: Re: EMISSION WORKSHOP WARNING, NO ERRORS WHEN RAC CHECKED CAR.......
Post by: Matthew Green on 16 October 2011, 17:06

thanks think i will get one of these for future but surely if the RAC did the same check it came back as the car was fine, wouldnt the reader you advised show the same?

Title: Re: EMISSION WORKSHOP WARNING, NO ERRORS WHEN RAC CHECKED CAR.......
Post by: mcgee9t2 on 16 October 2011, 17:08

yeah that reader should show just about any code and can reset/wipe all codes off.

cant see why it wouldnt show a code if it was lambda though.

unless you car somehow reset its self :D