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they refer to the air/fuel sensor circuit and air/fuel heater circuit , the 0125 code refers to engine not getting to operating temperature , so that is why the other two codes are read , check coolant level, if ok check that the thermostat is opening , if it is then you may have an air lock in the coolant system so bleed the system , whilst bleeding get someone to switch the heater temp switch to hot and back to cold a few times as thats where an air lock could easily get trapped
The air/fuel ratio sensor has gone bad (basically the O2 sensor). The code P1130 is Bank 1 Sensor 1.
Sensor 1 is before the catalytic converter coming off the exhaust manifold. Bank 1 is which ever side cylinder 1 is on your engine. In this case its a sideways engine and its closest to the firewall.
P1130: Most likely you have a bad oxygen sensor. This would be the first oxygen
sensor if you have more than one meaning the one closest to the engine
and BEFORE the catalytic converter. They're pretty common and
inexpensive enough where I'd recommend changing that first and see if the
light goes out on it's own.Hope this helps Tim
Was the computer reset after the thermostat was replaced?? If not, it must be reset to clear prior codes. as for the p1130/1135, they are related here is some info>>>>http://www.engine-light-help.com/toyota-engine-light.html
p1130 refers to af ratio senor bankone sensor on. If you car has a six cylinder bank one is the side where #1 cylinder is located sensor one is the sensor closest to the engine. hope this helps
The first and last code are your start and stop so you can ignore them the P1130 and P1150 are your two front oxygen sensors( pre cats ) bank one and two. Depending on your millage it sounds like it is time for a little maintence. Normally they should be changed at or around 60,000 kms
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