P0494 · Herstellerinformationen

BUICK · 2026-09-26

This Preliminary information communicates the potential for dtc p0494 to be stored in the ECM due to potential software anomaly

BUICK · 2026-09-02

This Preliminary information describes a condition where engineering is working on a solution to a P0494 DTC stored in the ECM.

GMC · 2023-04-24

This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2024 HUMMER EV.

GMC · 2023-03-23

This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the 2022-2023 HUMMER EV.

GMC · 2022-07-01

This Preliminary information communicates to the field that water hitting the cooling fans can set a false DTC: P0494 for the new 2022 HUMMER EV.

BUICK, CADILLAC · 2022-01-14

This engineering information (EI) closure ends the need for further information from technicians in regards to the Check Engine Lamp illuminated on the Driver Information Center (DIC) with P0494 Set.

BUICK, CADILLAC, CHEVROLET, GMC · 2021-05-03

This service bulletin provides repair information to correct a customer concern of a Check Engine Light Displayed on Driver Information Center (DIC), Engine Cooling Fan Windmilling, DTC P0494 Set.

FORD · 2019-05-23

Some 2016-2019 F-Super Duty and 2016-2019 F650-750 vehicles equipped with 6.7L engine may exhibit a concern where the engine cooling fan stays on at all times or is inoperative. Diagnostic trouble codes (DTCs) P0480, P0494, P0495, P0529, P0691, P0692, P0693 and/or P0694 may be stored in the powertrain control module (PCM). To address these vehicle symptoms, use the updated online version of pinpoint test AH in the powertrain control/emission diagnostic (PC/ED) tab on the PTS website. The pinpoint test has been updated to aid in preventing unnecessary fan clutch replacement.