Toyota Repair: 93 landcruiser, oxygen sensor, landcruiser

Question
hi Ted I have 93 land cruiser the check engine light is on about a couple years here are the codes 28,83,84,85 I read your past answers about the last 3 codes but not 28 can you help thanks

Answer
The 28 is an oxygen sensor code for the #2 sensor, unless it is california emission certified it does not have a sensor behind the catalityc converter which normally #2, if there is no sensor in the back I would recommend replacing both of the front sensors, they are just in front of the converter.