Hyundai Sonata Check Engine Bulb Size

The Hyundai Sonata check engine light utilizes a size 37 bulb for the instrument cluster display. Data for the specified component covers the period from 1989 through 2001.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Type	Shop
1989-2001	37	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1W.	37	Check Price

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Additional Notes

The type 37 bulb is the sole check engine light bulb size listed for the Hyundai Sonata across the 1989-2001 model years.
The type 37 is classified as a T5 miniature wedge bulb under the ANSI standard, which governs bulb specifications in the United States and Canada.
The T5 designation refers to the bulb's tubular envelope, with the numeric portion indicating a width of five-eighths of an inch.
The type 37 operates at 12 volts and draws 1 watt, placing it among the lower-wattage miniature bulbs used in instrument and indicator applications.
The wedge base design means the bulb is held in its socket by the tension of the base contacts rather than by a bayonet or screw mechanism, which is a common construction for low-wattage indicator bulbs.
Because the type 37 is an ANSI-standardized part, it is considered interchangeable across vehicles that specify the same bulb number, provided the socket type is compatible.