This valve on the high-pressure pump often fails or gets clogged. Experts on the Pico Technology forum suggest cleaning it with compressed air, though replacement is often necessary.
Renault Clio 1.5 dCi is showing fault code , it specifically points to a Fuel Rail Pressure Regulation
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The fault code typically appears with specific sub-attributes () that change how the car behaves: Renault DF137 Error: Q&A for Renault 1.5 dCi, Clio, Kangoo This valve on the high-pressure pump often fails
"Yeah," Mara said. "DF137 got me."
The on a Renault Clio 1.5 dCi specifically indicates a Rail Pressure Regulation Function error . This critical code appears when the engine control unit (ECU) detects that fuel pressure in the common rail is either above the maximum limit or below the minimum required threshold. Technical Breakdown of DF137 Aftermarket brass bushings (e
The common rail system in the 1.5 dCi relies on tightly regulated fuel pressures—ranging from roughly 230 bar at idle up to over 1600 bar under high engine load. The ECU continuously reads data from the fuel rail pressure sensor and uses an Inlet Metering Valve (IMV) / fuel pressure regulator on the High-Pressure (HP) pump to adjust flow. If the pressure swings outside the safe, pre-programmed thresholds, the to protect fuel system components from damage.