Iveco Stralis Rfc Fault Codes

| Code | Likely cause | Difficulty | |------|--------------|------------| | RFC 01 | Low battery / bad connection | Easy | | RFC 05 | Trailer CAN wiring | Medium | | RFC 08 | Brake pedal sensor | Easy | | RFC 12/14 | Pressure sensor | Medium | | RFC 21/22 | Wheel speed sensor | Medium | | RFC 29 | EBS ECU failure | Hard | | RFC 33 | CAN bus to engine | Medium | | RFC 41 | Trailer valve circuit | Medium | | RFC 50 | Brake wear sensor | Easy |

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

| Fault Code | Description | Likely Cause | |------------|-------------|----------------| | 4741 | RFC – Additive level too low | Additive tank empty or level sensor failure | | 4742 | RFC – Additive dosing circuit malfunction | Clogged injector, pump failure, or blocked line | | 4743 | RFC – Additive pressure sensor fault | Faulty pressure sensor in dosing unit | | 4744 | RFC – Communication error between ECU and RFC controller | CAN bus interruption, wiring issue, or faulty RFC module | | 4745 | RFC – Additive quality error | Wrong or degraded additive (non-genuine fluid) | | 4746 | RFC – Additive temperature out of range | Sensor failure or heater malfunction (cold climates) | | 4747 | RFC – DPF efficiency low due to missing additive | Additive system disabled or empty for long period | | SPN 5394 / FMI 0-16 (J1939) | RFC Additive Tank Level – Low / Data erratic | Level sensor or wiring short | iveco stralis rfc fault codes

| Component | Test | |-----------|------| | Additive level sensor | Measure resistance (empty ~0Ω, full ~250Ω typical) | | Dosing pump | Supply 12V – should hear clicking/pumping | | Pressure sensor | Compare voltage to pressure curve (0.5V–4.5V range) | | Heating element (if equipped) | Check resistance (~10–50Ω) and 12V supply |

Use a J1939 / J1708 diagnostic tool compatible with Iveco. Examples: | Code | Likely cause | Difficulty |

On older Stralis models, you can retrieve RFC fault codes via the dashboard:

Before delving into codes, it is vital to understand the hardware. In the Iveco Stralis (particularly models utilizing the Cursor 8, 10, and 13 engines), the RFC is a specific control unit manufactured by Continental (often labeled as TEMS). It differs slightly from generic ECUs because it integrates heavily with the vehicle's CAN-BUS network, communicating with the gearbox, ABS, and body computer. Below are the most frequent RFC-related fault codes

Its primary functions include: