I had check engine light comeson.I brough to lexus dealer they replace the
sensor at exhaust pipe about seven month ago.Now the check engine ligth
comes on again,they cost me $500.00 to replace one at the engine,and no
warranty, because its have a few sensors on the engine.
Please,tell me which sensor is faulted,and show me how to replace its.
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Re: Check engin light comes on.
The check engine light can come on for many reasons! But being that changing the sensor at the exhaust did help for a while makes me tend to believe there is still a prob in this area. If you do a lot of low speed driving and stop an go, the convertor on the exhaust could be clogged a bit. Esp a lot of short drives. The dealer sounds like a place to stay away from!! Frankster016
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I had this happen to my car after my mechanic said do not worry about oil light flashing intermittantly it is probably a sensor.
Now my car blows oil out the exhaust and is missing a cylinder or two and is hard to start and also lost power at about 20 km/h). I have done a ring or burnt out the rings which means a replacement engine ($3000 AUD) or replacement car is required in my situation. (too repair engine $6000 AUD which a different mechanic has told me they just do not bother repairing as labour is intensive and a reconditioned motor is cheaper)
(1) Check if oil is being blown out the exhaust pipe of your car when engine is cold. When engine is hot smoke with oil smell comes out. (burnt out rings)
(2) Check is Water is coming out the exhaust pipe of your car when engine is cold. When engine is hot steam comes out (blown head gasket possible if steam) (Cost estimate minimum $1500 AUD - depends on if head is warped or cracked)
(3) Check cooling water levels if running low all the time see (2)
(4) check engine has oil in it could be point (1) causing oil loss
(5) check all fan belts are working as designed and not broken
Code 1150 for a Lexus means the O2 sensor for bank two sensor one is not working. It could be a problem with the sensor or the wiring harness. Bank two is on the side of the engine with cylinder two, and sensor one is in front of the catalytic converter.
are they replacing the correct sensor? try bringing it to a vw specific shop that is not a dealer! make sure the air filter is not clogged. without doing a full scan in vag-com it would be very hard to diagnose the problem
The same thing happened to my 2003 ES300 - the smoke is coming from the oil seeping into the motor's cylinders. This is the classic "Oil Gelling" problem in Toyota and Lexus vehicles. There is a factory recall on it, but it only covers to 2002 ES300 not 2003. The Lexus dealer confirmed my "oil gel" problem and went to bat for me with Lexus - they got the repair approved - Thank you Mr Local Lexus Dealer! The cost was nearly $4,000 - paid for by Lexus.
Replacing an O2 sensor generally is "fixing the symptom" instead of fixing the cause. A good O2 sensor will often trigger a code if the exhaust mixture it is "seeing" is out of its range to adjust. If the pipe was bad when the sensor was changed, or if another part of the engine management system is out of range, it can cause the new sensor to fail or trigger the check engine light. In your case, I'd clear the codes and see if that helps. If not, you likely will need to do better diagnosis and perhaps again change the sensor if everything else checks out as good.
Yes it could be other problem but the 02 sensor is not the same as the VSC vechilce speed control. You may have two problems. The 02 Sensor should not be more than $75.00 and a half our labor at most. If it is something else it would or could get very expensive. The reason the light comeson is it's has a emmison problem.
you should have three oxygen sensors on your car, one for each bank of three cylinders; should be towards the Y pipe on each exhaust manifold. Additionally you should have one on the exhaust pipe before the cadilitic converter.
quite often the engine check light is indicating an exhaust issue (not the pipe but in the engine) or a faulty oxygen sensor(s) I had a small rubber tube come off one of the sensors in my old Sedona once and after paying through the nose to get new sensors because the dealer said the diagnostic machine said they were faulty it was only weeks later when the issue had not gone away I discovered the pipe was off...