Engine Warning Light & reader

Chat about your facelift 9n3 Polo - Including the 9N3 Polo GTI!
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joshua
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Joined: Sun Jul 26, 2020 4:53 pm
Drives: Mk 7 1.2S
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Engine Warning Light & reader

Post by joshua »

Hi all
My engine warning light has come on and I would like to check the codes to see what is wrong.
Have a 2007 Polo (facelift) - anyone recommend a reader for me?

Not sure if I need an OBD2 or can-bus?

Was looking at this - would it do the job?
https://www.amazon.co.uk/U281-OBD-2-CAN ... ive&sr=1-4

Thanks all,
Josh
CarbonChaos
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Re: Engine Warning Light & reader

Post by CarbonChaos »

I have one of those,it’s just a very basic code reader.
Read, erase,rescan. Whilst it will give you a starting point you will have to use google to look up the P codes it gives you.

I would suggest investing in OBDeleven its so much more than a code reader, you can scan , code and change so much. Download the app on your phone once you have the OBDeleven dongle.
joshua
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Joined: Sun Jul 26, 2020 4:53 pm
Drives: Mk 7 1.2S
Location: United Kingdom

Re: Engine Warning Light & reader

Post by joshua »

Thanks - bought one and read the code - Fuel Trim System Lean (Bank 1) - which it seems is a tricky one to resolve!

Cheers,
Josh
RUM4MO
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Re: Engine Warning Light & reader

Post by RUM4MO »

Just in case you have not worked this out, "(bank 1)" refers to the first or RHS bank of a V configuration engine, your engine being a 3-inline configuration only has one bank of cylinders.

Anyway, if that engine has an EGR system, it could be that the exhaust recycling gases are not getting back into the inlet manifold round about the Throttle Body area due to that final "port" being partially choked with gummy/tarry hot exhaust gases mixed up with oil mist from the oil separator so maybe check/clean that area up first taking care to avoid unplugging the power to the Throttle Body unless you have a means to then re-adapt it.

Edit:- I'd also carefully clean up the MAP sensor.
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