Iveco Stralis Rfc Fault Codes | TOP 2026 |

: This specific sequence is often linked to the number plate light or rear external lighting issues. RFC Air Pressure Faults

Fault code 4742 + 4747 active. → Additive dosing circuit malfunction (4742) leads to DPF efficiency low (4747). → Likely cause: Clogged dosing injector or dead pump. → Repair: Replace RFC dosing unit, reset counter, regen DPF. iveco stralis rfc fault codes

Inspect the mechanical linkage bars connected to the rear axle height sensors. If a bar is bent or popped off, the RFC receives an "out of bounds" voltage signal. : This specific sequence is often linked to

: Rear axle level sensor signal invalid. Affects ECAS (Electronically Controlled Air Suspension) operation. Root Causes of RFC Errors → Likely cause: Clogged dosing injector or dead pump

A typical code you might see for the RFC is: DTC: 1F FMI: 12 ACT: Y . This translates to an open or short circuit in the left parking lights that is currently active.

: Tail light / marker light circuit short to ground. Often occurs when water enters the rear light housing. 2. Trailer Connection Faults

Usually indicates a pinched wire along the chassis rail.