Iveco Stralis Rfc Fault Codes 2021 Free Online

Armed with the table above, you can now approach troubleshooting logically.

explains the nature of the failure (e.g., short circuit to ground, open circuit, or abnormal voltage). Common RFC Fault Codes and Meanings

The on an Iveco Stralis is responsible for managing the electrical systems at the back of the vehicle, primarily lights and sensors. When an RFC fault appears, it usually indicates a lighting issue, a sensor failure, or a communication breakdown with the rear control unit. Common RFC Fault Codes

Spray electrical contact cleaner into both the male and female sockets. Phase 3: Examine the Rear Wiring Harness Looms

An Iveco Stralis RFC fault code can be your first step toward a quick and free repair. Understanding the RFC's role as a diagnostic tool for the rear lighting and sensors, rather than a direct alarm of an engine failure, is key to reducing stress and avoiding costly diagnostic fees. iveco stralis rfc fault codes free

If you see DTC 09, check the Air Processing Unit (Air Dryer) in the middle of the chassis. The sensors are often mounted on top and can fail if the air unit doesn't release overpressure.

By following these recommendations and utilizing free resources, owners and technicians can effectively diagnose and repair Iveco Stralis RFC fault codes, ensuring optimal vehicle performance and reliability.

The Rear Frame Computer (RFC) acts as a localized brain for the back half of your truck. Instead of running hundreds of individual wires from the dashboard to the tail section, IVECO uses a CAN-bus multiplex system. The front computer communicates via digital signals to the RFC, which then distributes power and commands to components including:

| Fault Code (DTC) & FMI | Description of Fault | Most Common Causes & Solutions | | :--- | :--- | :--- | | | Air pressure sensor on the Air Processing Unit defective or open circuit. | * Cause : Faulty air pressure sensor or broken wires; sensor often fails due to excessive air pressure. The air unit may not release the overpressure. * Fix : Locate the Air Processing Unit (Air Dryer) in the middle of the chassis on the left-hand side (UK passenger side). It is identified by a large filter cartridge. The sensor is on top with a round connector. Check the connector for corrosion. Test or replace the sensor itself. | | 16 / FMI 05 | Short circuit or open circuit on trailer tail light circuit. | * Cause : Short circuit or high resistance/open circuit on the trailer's tail light circuit; often caused by damaged cabling in the trailer plug or a defective/faulty bulb in the trailer. * Fix : Visually inspect the trailer’s lighting plug and socket for damage or corrosion. Check all tail lights on the trailer for proper operation. Replace any faulty bulbs or repair damaged wiring. | | 18 / FMI 05 | Short circuit or open circuit on trailer right turn signal circuit. | * Cause : Open circuit or short to ground on the power supply for the trailer’s right turn signal. This is usually a wiring or bulb issue on the trailer side. * Fix : Inspect the trailer’s right turn signal bulb; ensure it is of the correct wattage (typically 21W). Check the trailer's cabling and the main connector for damage, corrosion, or a poor ground connection. | | 1A / FMI 05 | Number plate light circuit: open circuit. | * Cause : An open circuit in the power supply to the number plate lamp(s). * Fix : Check that the number plate light bulb(s) are working and are the correct wattage (typically 10W). If the bulb is good, inspect the wiring to the light unit for damage, corrosion, or a poor connection. | | 1B / FMI 05 | Rear right-hand position light (tail light) circuit: open circuit. | * Cause : An open circuit or high resistance in the rear right tail light. * Fix : Inspect the rear right tail light. This is often a simple fix of replacing a blown bulb (typically 5W/24V) or cleaning a corroded bulb holder. Ensure the bulb is of the correct wattage. | | 1E / FMI 12 | Tail clearance light circuit: current too low or value too high (undercurrent). | * Cause : This is often an undercurrent, meaning a bulb with incorrect (lower) wattage is installed, or a bulb has failed. * Fix : Check all marker lights along the side and rear of the tractor. Replace any dim or non-functional bulbs. Verify all bulbs are of the correct, manufacturer-recommended wattage. | | 1F / FMI 12 | Left-hand parking light circuit: short circuit. | * Cause : A short circuit in the left-hand clearance/parking light wiring. * Fix : Inspect the wiring harness, particularly where it may rub against the chassis or be exposed to moisture. Look for frayed wires or damaged insulation. Check the bulb holders for internal short circuits. | | 1D / FMI 05 | General short circuit or open circuit on one or more rear lighting circuits. | * Cause : A non-specific electrical fault in the rear lighting system. * Fix : Since the code is generic, the solution is to perform a systematic visual inspection of every single light at the rear of the truck (tail, stop, turn, reverse, marker, and number plate). Check all bulbs, their holders, and the visible wiring for damage. Often, this will lead you to a single failed bulb. | | 01 / FMI 06 | Overload or short circuit on an auxiliary output of the RFC, often the connector for rear bodywork/equipment. | * Cause : A connected accessory or body on the rear of the truck is drawing too much current, or there is a short circuit in its wiring. * Fix * : Disconnect any aftermarket or auxiliary rear equipment connected to the vehicle’s wiring. Check for chafed wires in the added equipment's harness. If the fault disappears, the issue lies with the external accessory. | | 13 / FMI 05 | Trailer left side lighting circuit: open circuit. | * Cause : The left side lighting circuit for the trailer is incomplete. * Fix : Check the trailer’s left side lights (position, side marker) and the corresponding pins in the trailer connector. Inspect the trailer's main cable for wear. | | 18 / FMI 05 | Trailer right brake light circuit: not engaging. | * Cause : The right-hand stop light on the trailer is not functioning. * Fix : Have someone press the brake pedal while you check the trailer's right brake light. Inspect the bulb, the bulb holder, and the wiring for that specific light. | Armed with the table above, you can now

Identifies the exact component that is failing (e.g., left brake light circuit, rear axle pressure sensor).

Fault codes are often displayed as a combination of a (Diagnostic Trouble Code) and an FMI (Failure Mode Identifier). Meaning / Likely Cause 09 01

Explains how the component failed. For example, a code might indicate a short to ground, open circuit, or implausible data.

When dealing with the Rear Frame Computer, the vast majority of issues are related to lighting and trailer plug connections. Here are the most common RFC faults and how to troubleshoot them: 1. Light Bulb Out/Circuit Errors (e.g., RFC 15 02 ) When an RFC fault appears, it usually indicates

Faulty brake switch, bad trailer patch cable, or corroded bulb contacts.

After replacing any fuel component, you must reset the RFC adaption. Using a free tool like (demo mode):

: The RFC detects abnormal current draw on the turn signals. Usually caused by water ingress in the light cluster or a blown bulb.