Here’s a helpful, practical post covering the code on a Renault Clio 1.5 dCi . Understanding DF137 on Renault Clio 1.5 dCi DF137 is a common fault code on Renault/Dacia vehicles with the 1.5 dCi engine (K9K). It translates to: "Turbocharger pressure regulation circuit – offset" or "Turbo pressure too high/low (plausibility)" .