So my EML light came on the other day, decided to attach my diag to is and its showing two error codes..

• P023B00 - Charge Air Cooler Coolant Pump Control Circuit Low
• P023A00 - Charge Air Cooler Coolant Pump Control Circuit/Open

I located the pump and actuated the pump via my reader and it seems to be working and you can hear it when you unlock the car and open the bonnet. You can feel it working too. However I did notice that the A/C pipe that runs under the pump looked like it was wet, indeed when I got under the car and checked it looked like there was a very small amount of coolant coming from the pump around the connector area it was enough to moisten the tip of your finger. Looking at the hose attachments they seem dry, but it seems the leak is coming from the pump body itself or around where the connector attaches to the body. 

When clearing the codes the EML light went off but the P023B00 remained. Then when driving the car, switching it off and then starting the car again the EML light comes on and the P023A00 code is back.

I'm guessing that even though the pump is working its pulling too much current/shorting as its leaking coolant through the body and throwing these codes. has anyone else come across this before?

I mean to me its pretty conclusive as to what the issue is but its always good to ask other opinions..

Also the pump doesnt seem to have a part number on it, just the Audi logo, a QR code and made in Italy (Typical) I did look it up but there are a number of different pump part numbers for this is there a specific one I need to use for this?

So far I have found 4H0965569A which seems to be the one.

I think you're diagnosis is spot on. Have you managed to scan the QR code? 

6 minutes ago, Steve Q said:

I think you're diagnosis is spot on. Have you managed to scan the QR code? 

Cheers, I hope so. I cant imagine it would be anything else.

No, there was too much corrosion/dirt on the back, even after cleaning it up with some cleaner the camera couldn't pick it up 🙄

You're welcome. 

Thats a shame. If you put your reg or vin into parts websites you might find the correct one. 

Not sure how long you've had the car but if you've bought it within the last 30 days from a dealer then they should fix it free of charge as you're protected under consumer law. As you can reject the car for a full refund within the first 30 days from sale.