1995 Lexus GS300 Brake light switch, chek engine light on.
Brake light switch, chek engine light on.
What is your question?
My brake light warning light is coming on after hitting the brakes. I replaced the brake light switch completely, but it still comes on indicating something wrong with the rear lights. All the light bulbs are replaced, everything is working but still the brake warning light comes on and will not go out. Secondly, my check engine light is on intermediate. Most of the time it's on, occasionally it is off for about 2 day's then comes back on. My car is a OBD 1 so I tested the codes and code 71 comes up, meaning the EGR system, however, it just passed smog? so the EGR valve is working. Now, there are 2 wires connected to the EGR valve with a electrical connector, I was told that that is a oxygen sensor, could that be the problem, because I did cleaned out the EGR valve from all the carbon buildup. What could it be?
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There is a control module that monitors the brake lights, so you need to scan that to see what the problem is. A code 71 means that there is insufficient flow with the EGR system. So, yes it may pass Smog, but that does not mean that the system is really ok, a lot of room is given to an OBD-1 car in the CA Smog Inspection, I know, I am a California Smog Tech and do Smog Testing and failure diagnosis for a living.
Really need to have a good Gold Shield Smog Tech diagnose the EGR system, it can be many things. Here is a sheet that I wrote for the OBD-II
equivalent of a code 71.
http://repairpal.com/OBD-II-Code-P0401-Toyota A Toyota V6 is the same EGR system as the Lexus.
