PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 3556 / FMI 5
PACCAR Fault Code P3833: Fuel Dosing Valve – Current Too Low or Open Circuit on ECU (D374) Pin (A05) or Pin (A29)
P3833 on PACCAR (Kenworth & Peterbilt) engines means: Fuel Dosing Valve – Current Too Low or Open Circuit on ECU (D374) Pin (A05) or Pin (A29). The failure mode (FMI 5) is “current below normal or open circuit”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2013–2016)
- Fault code
- P3833
- J1939 SPN
- 3556
- FMI
- 5 — Current below normal or open circuit
- Truck models in source
- Kenworth T680, T880, W900, T800; Peterbilt 579, 389, 567, 367
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 5 tells the shop the type of failure to test for: current below normal or open circuit.
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
- PACCAR Fault Code P3833 — Fuel Dosing Valve – Current Too Low or Open Circuit on ECU (D442) Pin (48) or Pin (32)
- PACCAR Fault Code P3787 — Fuel Dosing Module – Used Up All Compensation
- PACCAR Fault Code P3836 — Fuel Dosing Valve – Leakage Detected
- International Fault Code SPN 3556 FMI 0 — AFT Fuel Pressure 2 – Excessively High
- International Fault Code SPN 3556 FMI 1 — AFT Fuel Pressure 2 – Below Desired
- International Fault Code SPN 3556 FMI 7 — AFT Fuel Injector – Not Responding as Expected
Source: PACCAR MX-13 2013–2016 fault code list (Diesel Laptops). See also OBD-II codes.