Is there any body on here know anything about p023b fault code which is charge air cooler coolant pump control circuit low ive changed the auxiliary coolant pump about 3 months ago which sorted it. but light is back on the dash again with same problem. any info would be great. 2014 skoda octavia vrs 

Hi there. I changed my aux coolant pump a couple of weeks ago and the EML management came back on with low and open circuit fault codes.

 

It was a broken wire in my case.

 

Check the wiring, it's a quick fix if you know what you're doing.