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The error code is P1155. Lexus 300 EX. 2002

Vehicle: 2002 Lexus 300 EX 3.3

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P1155 A/F sensor heater circuit malfunction Bank 2 Senosr 1

This is for the upstream A/F sensor (refferered to as a 02 sensor) at Bank 2 Sensor 1.  Upstream 02 sensor are engine management sensor. P115 is either a open in the A/F sensor heater circuit or a failed A/F sensor

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