This is an archive of Scott Campbell's oxygen sensor wire color matrix from his former site

MANUFACTURER	SENSOR MFG	1 WIRE	1 WIRE	1 WIRE	2 WIRE	2 WIRE	3 WIRE	3 WIRE	4 WIRE	4 WIRE	FUNCTION
General Motors	DELPHI	VIOLET			VIOLET		VIOLET		VIOLET		SIGNAL +
					PINK				PINK		SIGNAL -
							BROWN		BROWN		HEATER
							BROWN		BROWN		HEATER
	DENSO	BLACK			BLUE		BLUE		BLUE		SIGNAL +
					WHITE				WHITE		SIGNAL -
							BLACK		BLACK		HEATER
							BLACK		BLACK		HEATER
	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
									WHITE		HEATER
									WHITE		HEATER
	AUTOLITE	BLACK									SIGNAL +
FORD	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
	DENSO	BLACK					BLUE				SIGNAL +
											SIGNAL -
							BLACK				HEATER
							BLACK				HEATER
	NGK	BLACK					BLUE				SIGNAL
CHRYSLER	DENSO	BLACK			BLUE				BLUE		SIGNAL +
					WHITE				WHITE		SIGNAL -
									BLACK		HEATER
									BLACK		HEATER
	DELPHI	VIOLET									SIGNAL +
	BOSCH	BLACK									SIGNAL -
TOYOTA	DENSO	BLACK			BLUE	BLACK	BLUE		BLUE		SIGNAL +
					WHITE	WHITE			WHITE		SIGNAL -
							BLACK		BLACK		HEATER
							BLACK		BLACK		HEATER
HONDA	DENSO	BLACK							BLUE	WHITE	SIGNAL +
									WHITE	GREEN	SIGNAL -
									BLACK	BLACK	HEATER
									BLACK	BLACK	HEATER
	NGK	BLACK								WHITE	SIGNAL +
										GREEN	SIGNAL -
										BLACK	HEATER
										BLACK	HEATER
	DELPHI	VIOLET									SIGNAL +
NISSAN	U-JECS	GREEN					BLACK	BLACK			SIGNAL +
											SIGNAL -
							WHITE	RED			HEATER
							WHITE	WHITE			HEATER
	BOSCH	BLACK					BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER
MAZDA	DENSO						BLUE		BLUE		SIGNAL +
									WHITE		SIGNAL -
							BLACK		BLACK		HEATER
							BLACK		BLACK		HEATER
	BOSCH									BLACK	SIGNAL +
										GRAY	SIGNAL -
										WHITE	HEATER
										WHITE	HEATER
MITSUBISHI	DENSO						BLUE		BLUE		SIGNAL +
									WHITE		SIGNAL -
							BLACK		BLACK		HEATER
							BLACK		BLACK		HEATER
	BOSCH								BLACK		SIGNAL +
									GRAY		SIGNAL -
									WHITE		HEATER
									WHITE		HEATER
SUZUKI	DENSO	BLACK							BLUE		SIGNAL +
									WHITE		SIGNAL -
									BLACK		HEATER
									BLACK		HEATER
	DELPHI	VIOLET					VIOLET				SIGNAL +
											SIGNAL -
							BROWN				HEATER
							BROWN				HEATER
SUBARU	U-JECS	GREEN	RED	ORANGE			BLACK	BLACK			SIGNAL +
											SIGNAL -
							WHITE	RED			HEATER
							WHITE	WHITE			HEATER
	BOSCH						BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER
	DENSO	BLACK									SIGNAL +
ISUZU	DENSO	BLACK					BLUE		WHITE	WHITE	SIGNAL +
									BLUE	GREEN	SIGNAL -
							BLACK		BLACK	BLACK	HEATER
							BLACK		BLACK	BLACK	HEATER
	DELPHI	VIOLET					VIOLET				SIGNAL +
											SIGNAL -
							BROWN				HEATER
							BROWN				HEATER
	BOSCH						BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER
VW AUDI	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
BENZ	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
BMW	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
PORSCHE	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
ALFA-ROMEO	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
VOLVO	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
									WHITE		HEATER
									WHITE		HEATER
SAAB	BOSCH						BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
RENAULT	BOSCH	BLACK					BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
	AUTOLITE	BLACK									SIGNAL +
JAGUAR	BOSCH						BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER
	DENSO				BLUE				BLUE		SIGNAL +
					WHITE				WHITE		SIGNAL -
									BLACK		HEATER
									BLACK		HEATER
HYUNDAI	KEFICO				BLACK		BLACK		BLACK		SIGNAL +
					GRAY				GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
	DENSO	BLACK									SIGNAL +
	NGK										SIGNAL +
											SIGNAL -
											HEATER
											HEATER
KIA	DENSO	BLACK							BLUE		SIGNAL +
									WHITE		SIGNAL -
									BLACK		HEATER
									BLACK		HEATER
	BOSCH						BLACK		BLACK		SIGNAL +
									GRAY		SIGNAL -
							WHITE		WHITE		HEATER
							WHITE		WHITE		HEATER
	STANDARD	BLACK					BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER
	ECHLIN						BLACK				SIGNAL +
											SIGNAL -
							WHITE				HEATER
							WHITE				HEATER