HYUNDAI

25-01-083H DCS

Manufacturer communications

Publication date: 2025-11-19
Received by NHTSA: 2025-11-20
NHTSA record numbers: 11025650

Manufacturer summary

Original wording in English

Certain Tucson Hybrid (NX4 HEV) and Tucson Plug-in Hybrid (NX4 PHEV) vehicles equipped with the 1.6T-GDI Gamma II engine may set DTC P04DB00 (Crankcase Ventilation System Disconnected). Technical Service Bulletin (TSB) 25-01-083H provides instructions to perform a software update on the Engine Control Module (ECM) to resolve this condition.

NHTSA manufacturer communications ↗

Reported code forms

P04DB

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

HyundaiP04DB00

Crankcase Ventilation System Disconnected

NHTSA 11025649 · NHTSA 11025650 · NHTSA 11027789

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Make	Model	Model year
Hyundai	TUCSON HYBRID	2025
Hyundai	TUCSON PLUG-IN HYBRID	2025

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