Iveco Stralis Rfc Fault Codes

During pre-trip inspections, explicitly test all trailer lighting.

For Euro 5/6 Stralis, aftertreatment issues often trigger power derates and component failures. The following table summarizes major problem areas and recommended actions for Exhaust Gas Recirculation (EGR), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (AdBlue) systems.

The rear chassis of a truck is constantly exposed to road spray, salt, and mud. Water easily penetrates the rear distribution boxes and trailer sockets, causing green corrosion pins that bridge circuits together and confuse the RFC. 2. Chafed Wiring Looms

Understanding IVECO Stralis RFC Fault Codes: A Complete Diagnostic and Repair Guide iveco stralis rfc fault codes

This is the most dreaded category.

⚠️ Do not use non-approved additives. Wrong fluid will cause crystallization, injector blockage, and permanent damage to the RFC system.

| Interval | Action | |----------|--------| | Every 150,000 km | Refill RFC additive tank (or earlier if warning appears) | | Every 300,000 km | Replace RFC dosing injector and filter | | Annually | Inspect additive lines for brittleness or leaks | | Whenever DPF is replaced | Reset RFC counters and check dosing accuracy | The rear chassis of a truck is constantly

Dealing with an error on an Iveco Stralis often means dealing with lighting, rear axle sensors, or chassis wiring issues. This module controls the electrical distribution for the back half of the truck. Understanding the RFC Module

Below are the most frequent RFC-related fault codes for Iveco Stralis (Euro 6 / HI-SCR), based on diagnostic data from and common OBD codes.

When the RFC system malfunctions, the Engine Control Unit (ECU) logs specific fault codes, leading to limited engine performance, blocked DPF, or forced regeneration inhibition. Chafed Wiring Looms Understanding IVECO Stralis RFC Fault

Open circuit or short to ground in the right rear wiring harness. Brake Light Circuit Error

Signals a fault in pedal sensor 1, which may cause limp mode or unresponsive acceleration.

The (particularly models equipped with HI-SCR and Euro 6 engines) uses an RFC (ReGen Fuel Catalyst) system. The RFC is a fuel-borne catalyst dosing system designed to assist the Diesel Particulate Filter (DPF) regeneration process.

If you see a code for FMI 3 on a sensor, you are looking for a short circuit to the battery. If you see FMI 4 , you are looking for a short to ground or an open circuit. Replacing the sensor for an FMI 3 or 4 code will often not fix the issue; the fault lies in the wiring loom, not the component.

Understanding IVECO Stralis RFC Fault Codes: Diagnostic and Troubleshooting Guide