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Clearing the codes is simple that is done by removing the fuse of the EFI from junction box 2 for 10 seconds. Make sure to remove the jumper wire and switch the key off before clearing the codes.
Here are some common Lexus vehicles 1990-1995 codes:
Code 12 and Code 13 Rpm signal circuit fault
Code 14 Igniter signal circuit fault
Code 16 ECT control signal fault
Code 21 and Code 28 Main oxygen sensor fault (for ES300; SC300 & GS300 models)
Code 22 Coolant temperature circuit fault
Code 24 Intake temperature sensor circuit fault
Code 25 and Code 26 Air fuel ratio fault (for ES300 & SC300 models)
Code 27 Sub-oxygen sensor circuit fault (for ES300 CA & GS300 models)
Code 31 Low airflow meter voltage (for ES300 and GS300 models)
Code 32 High airflow meter voltage (for ES300 model)
Code 35 Barometric pressure sensor circuit fault (for GS300 & SC300 models)
Code 41 and Code 47 Throttle position sensor circuit fault
Code 42 Vehicle speed sensor circuit fault
Code 43 Starter signal
Code 51 Switch condition signal fault (for ES300; GS300 & SC300 models)
Code 52 Code 52 and Code 55 Knock sensor circuit fault
Code 71 EGR system circuit fault (for ES300; GS300 & SC300 models)
Code 78 Fuel pump control circuit fault (for GS300 & SC300 models)
The oil light only detects loss of pressure not oil level. Your oil pressure sensor or switch monitors oil pressure in your engine. It sends these signals to the ECU and to your oil pressure gauge or warning light. Swap out the oil pressure switch.
As an aside, I worked in a place with artwork from a very accomplished Toronto artist who signed his artwork just 'HOXHA'.
It could be ur thermostate, that was happening to my 94 lexus es300, and the gasket was stuck in thermostate preventing it from opening up all the way, that or ur heater core needs to get flushed, what temp does ur gauge say inside the car?
There are a number of possibilities. 1. If the compressor has a clutch, do you hear it engaging and disengaging? 2. The valve controlling the hot water going to the heater which mixes warm air with the cold air from the evaporator, is not working properly so it si not maintaining proper temperature. 3. THe temperature sensor that senses air temp at the intake to the AC in the cabin is defective. 4. THis is too comlicated to fix yourself, so you need to take it to an AC expert who knows this particular model.
Had the same problem, replaced the ambient air temp sensor in front of the radiator. Cost is like 10-15 bucks. Don't worry if temp doesn't change right away. Took me about 5 miles and then it worked great.
For general awareness, the outside air temperature sensor is located above the inside mirror. Try to reset the temperature measurement unit:1. Switch engine on.2. Press and hold clock minute (min) and hour (h) buttons simultaneoutly longer than 3 seconds. The display will show new temperature measurement unit.
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