windaddiction
Active member
So my wife was driving, and the car threw a CEL, P0272. Now the OBD2 codes aren't very helpful, so I brought it into scan. My VW service guy did a good job and now the engine is fine 500 km later.
So they said this code is essentially poor cylinder pressure on #4. They explained there are 4 main causes,
-Bad glow plug ( they actually measure the cylinder pressure)
-bad injector
-worn cylinder or rings
-or... and i think a big or since it was just one cylinder... a bad HPFP ( which they confirmed for me is covered upto 100,000km )
What the tech did was move the glow plug from #4 to #3 cylinder. then reset the CEL. This will narrow down the issues and I thought was a great idea. If the light stays off it was probably a loose connection, if it comes back on but this time it is #3, that glow plug is bad. If it comes back and show #4 cylinder, then it could be low compression or a bad liner/rings.
As I am still good to go, I assume it was a bad connection, they only charged me for the scan and not changing the glow plug positions os i was happy, however I need to buy VAGCOM since I do own 2 TDI's that are both out of warranty now! Hope this will help some one one day!
tags po272 p0272 po 272
So they said this code is essentially poor cylinder pressure on #4. They explained there are 4 main causes,
-Bad glow plug ( they actually measure the cylinder pressure)
-bad injector
-worn cylinder or rings
-or... and i think a big or since it was just one cylinder... a bad HPFP ( which they confirmed for me is covered upto 100,000km )
What the tech did was move the glow plug from #4 to #3 cylinder. then reset the CEL. This will narrow down the issues and I thought was a great idea. If the light stays off it was probably a loose connection, if it comes back on but this time it is #3, that glow plug is bad. If it comes back and show #4 cylinder, then it could be low compression or a bad liner/rings.
As I am still good to go, I assume it was a bad connection, they only charged me for the scan and not changing the glow plug positions os i was happy, however I need to buy VAGCOM since I do own 2 TDI's that are both out of warranty now! Hope this will help some one one day!
tags po272 p0272 po 272