Home Just Lambda Cross Reference Wire Colours [1] Wire Colours [2] Sensor Positions Types of Sensor Testing Sensors Common Faults Fitting a Sensor Universal Sensors Wideband Sensors Bosch 0258003xxx Bosch 0258005xxx Bosch 0258006xxx Bosch 0258007xxx Bosch 0258104xxx Special Offers Sockets & Boss's Alfa to Mazda Select Alfa Romeo Aston Martin Audi Bentley BMW BMW Mini Chrysler Citroen Daewoo Daihatsu Dodge Ferrari Fiat Ford Honda Hyundai Jaguar Jeep Kia Lancia Land Rover Lexus Maserati Mazda M Benz to Yugo Select Mercedes MG Mini BMW Mitsubishi Nissan Peugeot Porsche Renault Rolls Royce Rover Saab Seat Skoda Smart (MCC) Subaru Suzuki Toyota TVR Vauxhall Volkswagen Volvo Yugo Other Sensor Manufacturers Select NTK Sensors Walker Sensors		Common Wire Colour Variations. Zirconia Sensors Fitted to 85% of vehicles on the UK roads fitted with a catalytic convertor One Wire Zirconia Sensor Output 0.1 to 0.9 Volt Colour Connection Black - Signal Two Wire Zirconia Sensor Output 0.1 to 0.9 Volt Colour Connection Black - Signal White - Earth Colour Connection [Alternative] Black - Signal Grey - Earth Three Wire Zirconia Sensor Output 0.1 to 0.9 Volt Colour Connection Black - Signal White - Heater White - Heater Colour Connection [Alternative] Blue - Signal Black - Heater Black - Heater Four Wire Zirconia Sensor Output 0.1 to 0.9 Volt Colour Connection Black - Signal Grey - Earth White - Heater White - Heater Colour Connection [Alternative] Blue - Signal White - Earth Black - Heater Black - Heater Titania Sensors Fitted to 10% of vehicles on the UK roads fitted with a catalytic convertor Three Wire Titania Sensor Colour Connection Black Ref. (out) Red Ref. (in) and Heater (+) White Heater (-) 250-23880 Universal Titania Sensor Output 0 to 1 Volt* *(See below) Three Wire Titania Sensor Colour Connection Black Ref. (out) Red Ref. (in) and Heater (+) White Heater (-) 250-23881 Universal Titania Sensor Output 0 to 1 Volt* *(See below) Four Wire Titania Sensor Colour Connection Black Ref. (out) Yellow Ref. (in) Red Heater (+) White Heater (-) 250-24883 Universal Titania Sensor Output 0 to 5 Volt Four Wire Titania Sensor Colour Connection Black Ref. (out) Yellow Ref. (in) Red Heater (+) White Heater (-) 250-24882 Universal Titania Sensor Output 0 to 5 Volt Quick Check List 1. Count the number of wires on the original sensor. 2. Check the colour of the wires    a. If the sensor has black, grey, purple or white wires, it will be a Zirconia sensor.    b. If the sensor has one red wire (and or yellow) with the possible exception of some        Japanese vehicles, it will be a Titania sensor. 3. If it is a Titania sensor then check the original thread size of the sensor. 4. If you have any doubt or query, please contact us. * In some applications fitted with three wire Titania oxygen sensors, the output is 0 to 5 volt.

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