Question about 2002 Suzuki Vitara
First off ECU can never tell you what is bad, it can only tell you what tests failed.
135 test. failed.
Front sensor, left side of engine (engine not stated in post)
P0135Heated OxygenSensor(HO2S)Heater Performance
a kinda dumb way to stated this Performance.
a better word would be HEATER dead,
or the heater no longer draws current is the better words.
this has 2 causes.
1: heater is dead, buy a new sensor they last 100k miles.
2: the wires to it fell off, stopping current flow, dead.
the latter issues, is a look and see it. it melted or broken wires.
you can read this page A80 in the FSM.
more that 4amps draw is a shorted O2sensor
less that .22amps is open sensor.
why? , well they all go open well before 11 years running.
or last worker, failed to put back the clamps to wires. allowing them to hit the exhaust and melt and short or open.
and this being bad wastes lots of fuel , so there is a return
on investment here.
Posted on Oct 20, 2013
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Posted on Jan 02, 2017
SOURCE: PO135 Error Code
Bank one stands for the same side as the number 1 cylinder. Sensor 1 is
the first sensor in the bank, (closest to the engine or upstream).
In most cases you will find it on the drivers side\left hand side of the engine and above the catalytic converter. Look for it on the lower portion of the exhaust manifold.
Posted on Sep 07, 2009
That is an error for a heater oxygen sensor (H02S). It's located on the exhaust pipe after the catalytic converter. If you have a 4 cylinder, there will only be one catalytic converter so it will be pretty easy to figure out which sensor to replace. If you have a 6 cylinder you will have to determine which bank is Bank 1 and which is Bank 2. If you can find a cylinder identifiction diagram bank one will be the side that cylinder # 1 is on. Whenever i have encountered a similar code it has always been a bad oxygen sensor. So, inspect the wiring to the sensor and if all checks out, replace the sensor.
Posted on May 21, 2010
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