Question about Toyota Highlander

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O2 SENSOR I CHANGED MY O2 SENSOR AFTER I CHANGED THERE WAS NO PRBLEM ENGINE LIGHT IS GONE TOO BUT AFTER I TRIED TO START IT OT DOESNT START RIGHT NOW WHAT MINGHT BE THE PROBLEM ??

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Did you reset the codes after replacing the O2 sensor? It is possible sometimes that the values stored in the ECU for the earlier sensor may be giving the wrong readings. Try resetting the codes and see if it helps. Also, make sure that you replaced the part that was actually needed. If the OBD gives other codes, the problem might not be with the sensor.

Posted on Apr 25, 2013

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Posted on Jan 02, 2017

  • 14 Answers

SOURCE: Check Engine Light - O2 Sensor - bank 1 running lean

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.

Posted on Nov 20, 2008

  • 66 Answers

SOURCE: O2 sensor problem

I have a 97 gmc sierra .This truck is the same as the chevy ok.Its a 350 5.7 liter 4x4 Z71.I took it to auto zone which was my first mistake.They put it the scanner and said bad O2 sensor.Ok so which one is it i said.They dont know.Well there four (4) O2 sensors in this truck i hope you know that.I had to replace all four of them before i had to take it to a real shop.It seems the fuel pump i replaced a week earlier with an auto zone fuel pump was bad.Ive changed my feul pump 4 times now and have 235000 miles on still running.You need to get your fuel pressure checked.It should be 65 psi to start it and 55 psi to run it.If the pressures are good it could be a different O2 sensor or maybe the mass air flow senor.My last option would be the fuel pressure regulator because it seems to be a waste of time and money.I would get that fuel pressue checked first.Good luck.

Posted on Nov 25, 2008

  • 3 Answers

SOURCE: engine light on 2002 mazda protege is on even after changing o2

Try cleaning the Mass Airflow (MAF) Sensor. My 2002 Protege check engine light came on and it started stalling at stoplights if I didn't keep the engine revved a little. Manager at AutoZone checked the computer code for the light (P0171?), and it said it was running lean. He suggested I try the MAF sensor cleaner they have ($6.99) rather than replacing the 02 sensor, etc.; it made a *significant* difference. (I think I need to do it again to get it totally cleaned out, but the can is for at least 4 cleanings.) The MAF sensor is the large component that air goes through right after the air filter. If you don't have the repair manual for the car (search online for PDF's), you search for the part online to see what it looks like. Mainly, it's a tube about 4" across with some small wire things inside. The cleaner can said it was a 10 minute job; mine took 20 minutes, but only because the tube leading from the MAF sensor to whatever is next (a kind of bent elbow tube, with a couple of accordian-style ripples) tore, and I had to duct-tape that up to seal it. (Still haven't gotten that replaced - found them online for ~$40. Maybe this weekend...)

Posted on May 16, 2009

  • 115 Answers

SOURCE: Check Engine Light - P2181

Hi,first thing your cambelt and tensioner should have been replaced 13k miles ago,it would pay you to replace the water pump at the same time as they are known for impellor failure = cooling system fault=P2181 code,hope this helps.
Darren

Posted on Aug 06, 2009

  • 246 Answers

SOURCE: reset ems (check engine light) on ford expedition

Try to remove positive baterry terminal for 20 minutes and install it nack. That will reset your ECU and it will run little rought tilll learn new change in 02 sensor.

Posted on Feb 20, 2010

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Code po430 2007 trailblazer ss 6.0 engine light cam on why?


Code po430 is your O2 downstream sensor on your right bank telling you that you either have a problem with your catalytic convertor ot possibly your O2 sensor or wiring are bad.

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Service engine soon light comes on and gas guage does not work


IT SOUNDS LIKE YOU HAVE 2 UNRELATED PROBLEMS. THE CHECK ENGINE LIGHT 9 OT OF 10 TIMES IS DUE TO AN O2 SENSOR, ITS PART OF YOUR SMOG EQUIPMENT. IF YOU DRIVE RELATIVELY SHORT DISTANCES ALL THE TIME THE OXYGEN SENSORS WILL GET PLUGGED CAUSING THE LIGHT TO COME ON, REPLACING THE OXYGEN SENSORS ISNT A BIG DEAL. NOW FOR THE GAS GUAGE NOT WORKING, IT COULD BE A FEW THINGS, FIRST CHECK YOUR FUSES, IF THEY ARE OK, IT COULD BE A RELAY, A BAD GUAGE OR JUST A LOOSE WIRE TO THE GUAGE,OR THE SENDING UNIT FROM THE TANK TO THE GUAGE. BUT MOST LIKELY ITS PROBABLY A SENSOR THAT HAS GONE BAD.

Dec 31, 2011 | 2006 Nissan Pathfinder

1 Answer

How do you check the O2 sensor


hi, the only way to really check the o2 sensor is buy removing it then running power through it but this can damage it further.
The most common thing you will notice if the lambda sensor (oxygen sensor) when the car starts from cold and if it runs ok when you run the car upto temperature if when its hot the engine doesnt run correc then this is usually proof the o2 sensor needs replacing.

What makes you think the o2 sensor is gone and are you going on about the lambda sensor in the exhaust if not then im sorry but let me know then i can assist you further ok

Aug 11, 2009 | 1997 Mercury Cougar XR7

1 Answer

(o2 sensor indicator light cancel switch.) I need to fix this. I changed my o2 sensor and the light hasn't gone off, and it runs the same weather or not the sensor is pluged in or not.


could have wiring damaged need to check if signal from O2 sensor is getting to engine ECU.
can see this in data display using tech2 or scanner O2 sensor reading would be around 450mv all the time indicating open circuit(this is a default reading used by ECU)
or with multi meter back probe ECU connector O2 signal wire to see what reading if any getting to ECU.

Jul 19, 2009 | Isuzu Trooper Cars & Trucks

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03 impala check engen light stays on and scanner reads, "02 heater sensor malfunction" and i just changed the 02 sensor and reset the light.


vehicle may have more than 1 o2 sensor. have u checked to see if it has more? most vehicles have more than 1

Jun 06, 2009 | 2003 Chevrolet Impala

1 Answer

Codes p1153 -p1140 -p1133-p0174


P0174 Basically this means that an O2 sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.
P0140 Basically this means the an O2 sensor in Bank 1 detected a lean condition, same as mentioned above. Bank 1 is the side where cylinder #1 is.
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling.

P1133 and P1153 indicate that the HO25 Sensor has gone bad. There the O2 sensor to the left and right bank at the exhaust manifold. When the engine first start's the PCM runs on a open loop and ignores the O2 readings till it reaches it's operating temperature. Once the operating temperature has been reached the diagnostic will only run once per ignition cycle and if the PCM detects a lesser then specified value, a DTC of P1133 or P1153 will come up.
Once the problem has been repaired, after 3 start cycle will reset the MIL light. If the O2 is just dirty and slow to heat up try cycling the ignition start 3 times and the light should go off if the O2 sensor does not fail.
Try cleaning the MAF first and see if the light comes off after a few ignition cycle, If the service light is still on you can always have Auto Zone clear the DTC codes and see if it comes back which then check the left and right bank wire harness to the O2 sensors. 
Good luck and hope this helps, keep me posted.

May 25, 2009 | 1997 Oldsmobile Aurora

2 Answers

Code: P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1


is this a 4 or 6 cylinder?
if a 4 cylinder it will only have 2 o2 sensors
V6 will have 4 o2 senors which the sensor will be the right side of the engine first sensor.
1st sensor on exhaust, I recommend if you change one change all, as this will make the computer when it rechecks the system you have all clean/fast responding sensors.

if you have a slow response it means the sensor is dirty and not reading well, which is usually caused by minor misfires that the engine computer dismisses, so a tune up would be recommended too.

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1995 impreza doesn't always start, and when it does, takes awhile


The check engine light may be due to your o2 sensors. Your car may have a lot of mileage on it. Try replacing your front and rear o2 sensor. Subaru's tend to backfire because they run a bit rich from factory. If you could give us a check engine light code I can clarify what the problem is.

Mar 24, 2009 | 1995 Subaru Impreza

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Check engine light on, car shakes while in reverse, stalls ...


You need a code scanner hooked up to find out what is causing the light ot come on. Some auto part stores can do that. Once the code is retrieved, they can tell you what sensor is causing it.

Jan 30, 2009 | 2001 Volkswagen Jetta TDI

1 Answer

Bad o2 sensor at back


LIKE I TELL MY CUSTOMERS...FOR STARTERS YOU NEED BRAKES BECAUSE IF IT DOESNT STOP IT DOESNT MATTER.IF THE O2 SENSOR IS BAD THAT WILL THROW OFF THE WHOLE EMMISSIONS SYSTEM.WHICH CAN CLOG YOU INJECTORS,RUIN YOUR PLUGS,CAUSE YOUR CHECK ENGINE LIGHT ON ECT.YOUR COMPUTER KNOWS THERE IS A PROBLEM & THE CAR WONT RUN WELL UNTIL ITS FIXED.STEP 1- BRAKES,02 SENSOR,TUNE UP,OIL CHANGE....WHATEVER ELSE YOU NEED.I KNOW IT STINKS.,JUST DO IT ONCE & DO IT RIGHT.

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