Mot 1654 Renault -

A second mechanic found a cracked vacuum hose near the brake servo. The tiny leak (3mm split) was causing the turbo actuator to see only 0.3 bar instead of 0.8 bar. The ECU, seeing sluggish vane movement, logged overboost when the system finally caught up.

Replaced the turbocharger ($1,100) – Code returned after 80 miles. mot 1654 renault

A: You can reset with an OBD scanner, but the fault returns as soon as the ECU detects the boost deviation again – usually within 10–50 miles. A second mechanic found a cracked vacuum hose

A: Yes. DF054 is the same code in Renault’s older 4-digit systems. MOT 1654 is the CLIP tool’s display format. Replaced the turbocharger ($1,100) – Code returned after

Let’s be clear from the start: Instead, it is a manufacturer-specific diagnostics code used by Renault’s proprietary systems (like the CLIP interface). In the world of Renault diagnostics, “MOT” stands for Moteur (French for “Engine”), and the number indicates a specific fault condition.