A: Yes, in most cases. P0204 is the universal OBD-II code for “Injector Circuit Malfunction – Cylinder 4.” MOT 1654 is Renault’s equivalent.
The MOT 1654 features a deep-skirt crankcase with seven main bearings (one between each cylinder). The crankshaft is forged steel, not cast iron. With proper maintenance (oil changes every 10,000 km), these engines regularly exceed 30,000 hours in stationary applications or 800,000 to 1,000,000 km in trucks without a bottom-end rebuild.
If the DPF is cracked, melted (due to excessive post-injection), or older than 150,000 miles, replace it.
Before you even scan for the code, your Renault will exhibit clear symptoms. Recognizing these early can prevent catastrophic engine damage. mot 1654 renault best
Subject: Preparation for Renault Diagnostic Inspection (MOT Protocol 16.54) Target: Renault Group Vehicles (Renault, Dacia, Alpine) Focus: Maximizing pass rate and "Best" diagnostic readiness.
If forced regeneration fails, the issue is likely mechanical. Do not buy a new DPF yet.
Replace the Differential Pressure Sensor A: Yes, in most cases
To ensure the vehicle is in the "best" condition for the 16.54 inspection, perform these checks before connecting the official diagnostic tool.
A. Dashboard & Warning Lights (The Visual Check)
B. Seatbelt Pretensioners
C. Electronic Diagnostic (OBD Port)
Code MOT 1654 translates to: "Injector Circuit Low / Open Circuit – Cylinder 4."
In simpler terms, the engine control unit (ECU) has detected an abnormality in the electrical circuit that controls fuel injector number 4. This “low” or “open” signal means the ECU is seeing either: reduce power (limp mode)
Because modern Renault engines rely on precise fuel metering, any fault with an injector circuit will trigger the check engine light, reduce power (limp mode), and significantly affect drivability.