The RFC has lost contact with the Body Computer over the CAN bus line.
Many DIYers can diagnose and fix simple RFC and electrical faults—checking bulbs, cleaning terminals, and inspecting wiring for obvious breaks. A multimeter becomes an essential ally for checking continuity and voltage.
Iveco diagnostic systems typically present codes in two formats depending on the generation of your Stralis (Stralis AS, AT, AD, or Hi-Way):
The Rear Frame Computer (RFC) on the Iveco Stralis manages critical rear-vehicle functions, with fault codes commonly indicating electrical issues such as open circuits, short circuits, or sensor failures. Troubleshooting often involves inspecting wiring harnesses for corrosion and verifying bulb wattage, particularly for lighting and air suspension sensors. Detailed diagnostics and code lists are available in the Iveco Stralis Fault Codes Guide on Scribd Stralis RFC fault - Iveco Daily Forums
Locate the main ground studs on the rear chassis crossmember. Remove the nuts, sand down any rust or paint to expose bare metal, apply dielectric grease, and re-tighten the connections firmly. Professional Repair Tips
Most Iveco Stralis RFC fault codes stem from environmental wear on exposed wiring rather than internal computer failures. Regularly washing the chassis underside to remove road salt, inspecting wiring tie-wraps to ensure they are not pinching looms, and using sealing grease on electrical plugs will significantly reduce the occurrence of RFC errors.
Corroded brake light switches or wiring loom chafing near the fifth wheel. Rear Fog Light Circuit Failure Water ingress inside the fog lamp housing. RFC 51 ECAS Solenoid Valve Block Fault Internal short circuit in the air suspension valve block. RFC 55 Rear Axle Height Sensor Out of Range Damaged linkage arm or sensor calibration loss. RFC 72 CAN-Bus Communication Interruption
