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Posted on Jan 02, 2017
SOURCE: P0155 & P0135
O2 sensors are tricky. sometimes like anything else they fail. many times though the exhaust mixture they encounter is out of their range and that shows up as a failure.since you seem to have no other problems , I would go ahead and change them, but don't be disappointed if the code shows up again (at least you know it's not the sensors.) I don't like using the process of elimination when doing repairs but sometimes you must.
Posted on Mar 16, 2009
SOURCE: o2 sensor bank1 sensor 1
usually bank 1 sensor one is closest to the motor(guess) but you can look it up in a manual and just changing the 02 sensor is gonna fix it they are anywhere from 40 to 100 dollars hope it helps
Posted on Jul 09, 2009
It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.
Posted on Oct 12, 2009
Yes you have a problem with wiring for the O2 sensor shorting out somewhere in the line. It could be anywhere from the sensor to the ECU. Make sure there are no breaks, burns, or crushed parts of the wiring.
Posted on Feb 02, 2010
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