In Renault’s specific diagnostic language, DF357 stands for: "Multiplexed signal for engine torque request."
To understand this, you have to understand how modern cars work. The ESP computer (the computer that handles stability and traction control) and the Engine ECU (the computer that runs the engine) are constantly talking to each other.
In simple terms: The traction control system cannot communicate with the engine to reduce power.
The 1.5 dCi engine family is a paradox. It is simultaneously one of the best small diesel engines ever made and one of the most finicky. The DF357 sits right in the middle of this paradox. renault df357
The DF357 represents the end of an era. It was the last pure "works" Renault turbo before the company pulled out of F1 for seven years. It was brutish, unreliable, and brilliant in fleeting moments.
In the modern world of hybrids and energy recovery, the DF357 is a dinosaur. But for collectors and historic racers, it is a holy grail. A running example changes hands for millions. Its sound—a high-pitched, staccato wail that transitions into a deep-chested roar as the boost comes on—is the audio signature of a time when F1 was lethally dangerous and spectacularly unpredictable.
The Verdict: The Renault DF357 wasn't the most reliable engine of its era, nor the most powerful. But in the hands of a genius like Senna, on a wet track, with the boost turned up and the electronics holding on by a thread, it was perfect. In simple terms: The traction control system cannot
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The Renault fault code DF357 refers to a specific issue within the electronic stability control system, widely known as ESP (Electronic Stability Programme).
Here is the full story on DF357, broken down by meaning, causes, symptoms, and the fix. Would you like this adapted into a shorter
In the pantheon of great Formula 1 engines, names like Ferrari’s Tipo 021, Honda’s RA168E, and Ford’s Cosworth DFV reign supreme. Yet, lurking in the shadow of the turbo era is a remarkable piece of engineering that rarely gets its due: the Renault DF357.
To understand the DF357, one must first understand the chaos of the mid-1980s. This was the peak of Formula 1’s "turbo wars," where qualifying boost pressures approached 5.5 bar and engines produced north of 1,300 horsepower in short bursts. Renault had pioneered turbocharging in F1 with the RS01 in 1977, but by 1983, they were playing catch-up to BMW, TAG-Porsche, and Ferrari.
The DF357 was Renault’s answer to that pressure—the final evolution of the 1.5-liter V6 turbo before regulations changed and the manufacturer withdrew its factory team at the end of 1985.
Note: exact values vary by subvariant, production year, and application. If you need precise numbers for a specific unit, supply serial/model year or request factory data plate scan.
Engines in the DF357 family are tuned to deliver strong low-end torque, which is essential for hauling and urban stop-start duty. Turbocharging and intermediate-pressure fuel injection systems improve combustion efficiency and responsiveness. Emphasis on fuel economy is achieved through precise fuel metering, efficient combustion chamber design, and modern turbocharger matching, allowing operators to reduce fuel costs over the vehicle’s lifetime while retaining adequate power for demanding conditions.