Iveco Stralis — Rfc Fault Codes ((top)) Free

Unplug the trailer electrical cables. Inspect the sockets on the back of the cab for moisture or green corrosion. Spray the connections with high-quality electronic contact cleaner. If the fault code disappears when the trailer is unplugged, the fault lies within the trailer wiring, not your Stralis. Step 4: Examine the Chassis Wiring Harness

| 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. |

: RFC faults are notoriously sensitive to bulb wattage. Ensure you are using the exact manufacturer-specified bulbs (e.g., for number plates, not 5W). Inspect Trailer Cables iveco stralis rfc fault codes free

If you want, I can:

To retrieve RFC fault codes, you'll need a diagnostic tool specifically designed for Iveco vehicles. Some popular options include: Unplug the trailer electrical cables

Remember: Many RFC codes are symptoms, not root causes. A code like rarely means a dead pump – often it's a $15 fuel filter or a $60 suction valve. Use the free resources above, take systematic steps, and you'll have your Stralis back on the road without a hefty repair bill.

Similar to code 21, but affecting the rear-right side lighting. If the fault code disappears when the trailer

The RFC primarily monitors lighting and chassis components. Common codes include: Lighting Issues : Often related to the rear number plate light

Below is a guide to understanding these codes, a list of common fault references, and how to address them.

: Faults are typically displayed in four columns: DTC : The anomaly code (e.g., 1A , 02 ) .

The Iveco Stralis chassis wiring is exposed to harsh road conditions, salt, and vibrations.