Home/Lexus/LS/Lexus LS II (1994-2000)/Repair manual/Testing & Diagnostics/DTC P0135, P0141, P0155 & P0161: HEATED OXYGEN SENSOR CIRCU…
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DTC P0135, P0141, P0155 & P0161: HEATED OXYGEN SENSOR CIRCUIT Lexus LS II

DTCDefinition
P0135Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 1)
P0141Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 2)
P0155Heated Oxygen Sensor Circuit (Bank No. 2, Sensor No. 1)
P0161Heated Oxygen Sensor Circuit (Bank No. 2, Sensor No. 2)

DTC P0135, P0141, P0155 & P0161 DEFINITION

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block. Sensor No. 2 refers to sensor furthest from engine block.

CAUTIONIf ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.