I'm trying to find out what the codes on the ECU mean with the end goal of buying another NA ECU. When ever I type anything with the words "ECU" and "codes" into Google, all I get are the fault codes.

I have a spare ECU with a big "36" on it, but I think it's a TT ECU. I've seen ones for sale with "21" and ""25" I think. Does anyone know of a list of all the different codes and what they mean? 

I want to buy a NA manual ECU as mine might be causing problems and wish to troubleshoot

Thanks!

What is the part# on the NA ECU you have?

Sorry it's taken so long to reply! I've added a picture of my NA ECU

 

 

When I put a TT ECU in the car by accident it ran really smoothly until 3000rpm when it had no power. When I put the NA ECU back in it started doing it's hesitating cough as you first press the accelerator, pulling away from stand still can be difficult as it keeps bogging down and trying to stall. It's done it for years, but now its time to fix it. So I thought get another ECU and start from there, especially as the TT ecu ran smooth and it pulled away fine. In the past I have changed the MAF, all filters, spark plugs, checked all wiring and it still does it, so hoping it's the ECU!

I did put a picture up of my spare na ecu. I can send it to you, try it & if it works then buy it from me if it doesnt then send it back?

That would be great! How much would you want for it if it works?

£70?

Sounds good. I'll pm you my address!

Did you get the ecu ok?

I did, thanks. I fitted it yesterday and the car doesn't cough with accelerating, but it struggles to accelerate with using more than 50% throttle, but I'm hoping to solve that. If you pm your PayPal, I'll send you some money! Thank you!

PayPal is mogsy57@hotmail.co.uk

Glad its helped a bit.

Ive sent £75 pounds. £70 for the ECU and £5 for the shipping. Thank you!

Recieved. Thanks!