Question about 2001 Toyota RAV4
Code P1155 along with P0420 and P0430 shows on scaner
Bank1 sensor 2 which is fromt sensor and the lower sensor the
second sensor on the front manifold
Posted on Jul 01, 2015
P0420 & P0430 are catalyst codes. Both catalytic converters are gone! Only fix is to replace them both. Don\'t believe the clean them out does not work. There is a bulletin to reflash,"update" the ECU software for these codes. Toyota tells us to do this after you replace the converters. It is just a bulletin, not a recall. They will charge you if your vehicle has more than 80,000 mile on it. Under 96 months or 80,000 it should be covered under your emissions warranty.
Posted on Mar 28, 2014
The codes indicate problems with the air/fuel ratio sensor and the catalytic converter.
Posted on Mar 26, 2014
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Posted on Jan 02, 2017
SOURCE: code p0430 p0420
there is a update for the engine computer if you take it in to your toyota dealer they can do it for you. there is a campaign on this issue so its free of charge
Posted on Apr 27, 2009
SOURCE: P0420 and P0430
The AF sensors are uupstream and the O2 down stream. The car' s computer tests them and it is saying your cats are bad. If you have a scan tool you could look at the data and see what the sensors are seeing. The Af sensors are the ones that control the fuel ratio in the car while the O2's just watch. AF's would be the one to change but there is no garuatee that the codes won't come back.
Posted on Sep 25, 2009
The upper sensors are air fuel sensors and the lower ones are o2 sensors. you cant mix these up. Assuming you did everything right and still coding then either the new sensor b1s2 is bad or the wirng(power and ground need to be checked. A scan tool can be used to look at the performance of the sensors too. Sometimes the codes just point to the area of the problem and changing the part isn't the answer.
Posted on Nov 15, 2009
The vapor pressure sensor, VSV for canister closed valve (CCV), VSV for pressure switching valve are used
to detect abnormalities in the evaporative emission control system.
The ECM decides whether there is an abnormality in the evaporative emission control system by the vapor
pressure sensor signal.
DTCs P0441 and P0446 are recorded by the ECM when evaporative emissions leak from the components
when there is a malfunction anywhere in the VSV for EVAP, the VSV
for pressure switching valve, or in the vapor pressure sensor itself.
checked basic , gas cap.
More than likely you need to take to a garage , rec. dealership
will have to perform a smoke check to see if there is a leak somewhere or wether there is a malfunction with a vac. solinoid valve(vsv)
Posted on Apr 29, 2010
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