Toyota Tundra Service Manual > Sfi System: Oxygen Sensor Circuit (Bank 1 Sensor 2) (P0136-P0139,P013A,P013C,P0156-P0159)
DESCRIPTION In order to obtain a high purification rate of the carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) components in the exhaust gas, a TWC is used. For the most efficient use of the TWC, the air-fuel ratio must be precisely controlled so that it is always close to the stoich ...
