| Cause | Notes | |-------|-------| | | UCH has an internal backup battery (soldered). When it fails, CAN messages corrupt. | | Water ingress in UCH | Located behind glovebox – gets wet from blocked scuttle drains or windscreen leaks. | | CAN bus wiring fault | Broken or corroded wires between ECU (engine bay fuse box) and UCH. | | 12V battery low or unstable | Low voltage during cranking corrupts CAN frames. | | ECU/UCH software mismatch | After replacement without correct coding/configuration. | | Key transponder fault | Rare, but UCH will flag DF137 if key is not recognised after multiple attempts. |
A faulty sensor or damaged wiring harness can send incorrect signals to the ECU. df137 renault clio 15 dci link
: Search for leaks or damaged wiring around the fuel rail and pump. | Cause | Notes | |-------|-------| | |
The fault code on a Renault Clio 1.5 dCi refers to a Rail Pressure Regulation function issue. This indicates the engine control unit (ECU) has detected fuel pressure that is either above the maximum limit or below the minimum required for stable operation. Common Causes & Diagnosis | | CAN bus wiring fault | Broken
Renault Clio hatchback (2013-2019) - MPG, running costs & CO2 - Carbuyer
The 1.5 dCi engine (Renault code: K9K) is one of the most successful diesel engines in automotive history, produced in millions of units across Renault, Nissan, Dacia, Mercedes-Benz (A-Class), and Smart vehicles. The DF137 uses the or K9K 796 variant (depending on Euro 3/Euro 4 emissions standards).