Mot 1654 Renault Best -

Introduced in the late 1970s (circa 1977-78) and produced well into the 1990s, the MOT 1654 belongs to Renault’s legendary “Moteur Vert” (Green Engine) family. Unlike the preceding “Moteur Bleu” (Blue Engine) series, the MOT series was designed during the oil crisis, prioritizing thermal efficiency, low-end torque, and serviceability over raw horsepower.

The "1654" code breaks down as:

Injectors have a solenoid coil that should measure between 12-16 ohms (for most Renault petrol engines). If the coil is burnt out (infinite ohms) or has an internal short (<2 ohms), MOT 1654 will appear. mot 1654 renault best

If forced regeneration fails, the issue is likely mechanical. Do not buy a new DPF yet.

Replace the Differential Pressure Sensor Introduced in the late 1970s (circa 1977-78) and

In the context of the French MOT (Contrôle Technique), code 16.54 typically refers to the inspection of Safety Equipment. However, in a workshop setting using diagnostic tools, "Mot" often refers to a specific software mode or manufacturer-specific code.

Before the Renault 16, family cars were largely sedans with separate trunks or utilitarian station wagons. The R16 bridged the gap. It introduced the world to the concept of the five-door "liftback." By utilizing a tailgate that opened upwards and rear seats that could be folded, tumbled, or removed entirely, Renault invented a class of car that prioritized practicality without sacrificing style. It was the first true "hatchback" of its size, a layout that dominates the global market today. Torque: 1,050 Nm (775 lb-ft) @ 1,300–1,500 rpm

| Feature | Renault Main Dealer | Independent Specialist | | :--- | :--- | :--- | | Diagnosis | Excellent (CLIP tool) | Excellent (High-end generic tools) | | Price for forced regen | ~$250 | ~$90 | | Price for new DPF | ~$2,200 (incl. labor) | ~$1,000 (using OEM equivalent) | | Warranty | 12 months parts & labor | 12-24 months on parts | | Best for... | Warranty claims, software updates | Value repairs, cleaning services |

Verdict: For MOT 1654, avoid the dealer unless your car is under warranty. Independent Renault specialists are best because they see this code weekly and know the shortcuts (like which hoses to check for cracks).

A bad engine ground strap can cause voltage fluctuations that the ECU misinterprets as a circuit fault on cylinder 4.

Key design feature: The over-square bore/stroke ratio (130/150 = 0.866) means a larger bore than stroke. This allows for larger valves, better breathing at moderate RPM, and lower piston speeds – critical for longevity in heavy truck and industrial use.