Question about 1997 Toyota Camry

3 Answers

Engine management light turn on

Could you tell me why the amber light comes on even after the oxygen sensor replaced ?It feel like the revs very retarded.

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  • fung711 Jul 16, 2008

    hi,I am still having the engine management light on after the oxygen sensor changed. Kevin the previous helper thought it was the brake warning light.

  • fung711 Jul 16, 2008

    Thanks for your helpful information, hope the light would cancel of after doing what mention.

  • fung711 Jul 20, 2008

    Thanks for suggesting for scaning methods.I have located the problem at the ECU.After replacing the unit ,the engine warning light turn off and the engine revs and performs very good. Thanks again,



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The technically proper diagnostic procedure would be to have the car's computer scanned and the readings interpreted for errors. The error codes would determine the "probable" defects.

To my knowledge, any sensor failure or reading/condition error with respect to the engine would trigger the engine management light. Most notably common to Toyota Camrys are the O2 sensors which would require original Toyota parts (for compatibility with the onboard computer) and not aftermarket such as Bosch. Scan readings would indicate error code PP107 or something like it.

In some cases, it could be part of the throttle assembly (throttle position sensor) and/or sticking parts which of course cleaning solve.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 16, 2008

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Is not way to see exactly why the light come on.
Only if you put a scanner. and ge t the code. that made the light come on.
Because the light come for easy thing to a hard thing. or problem.
I recomend scan the vehicle.
Can be the same code or diferent
But let me tell you. if you replaced 1 oxigen sensor.
Some times the light come for the other one.
Because the computer noted the deifferent between the sensor.

OK.. I hope this work for you.
If you get the code , I can give the Deffinition on it.

Posted on Jul 16, 2008

  • Juan Guillen Jul 16, 2008

    Let me ask you.

    You replaced the oxigen sensor due at CODE P1133?.

    On the 97 Toyota Camry with engine (1MZ-FE)

    With california emissions.

    An Improved oxigen sensor (A/F " Air Fuel Ratio Sensor.")

    Has been developed to correct This condition on CODE P1133.

    The new number is. 89467-41011.

    No one will correct that code, only the new toyota number above.


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If the light does not come on untill the first time you push on the brake pedal after starting the car it means you have a burnt brake light bulb, most times its the brake light bulb in the back window.

Posted on Jul 14, 2008

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There's nobody on Fixya who can give you a definitive answer as to why your engine check light is on. It just isn't possible, and nobody will tell you to replace parts because some of the parts can be pricey.

If you can understand a number of the causes that lead to a check light coming on, it will go some way in helping you decide what may be the fault:

The Oxygen Sensor
Often referred to as a Lambda sensor.
An oxygen sensor is fitted on the exhaust system before the catalytic converter. It monitors the unburned oxygen from the exhaust and detects how much fuel is being burned at any given time.
A faulty oxygen sensor means it's not providing the right data to the computer and will cause a drop in miles per gallon. Some cars may have more than one oxygen sensor.

Over time, the sensor becomes coated by burnt carbon waste from the exhaust and loses its ability to alter the oxygen / fuel mixture for different driving speeds and conditions. A faulty oxygen sensor also increases exhaust emissions.

A failed oxygen sensor can eventually cause the catalytic converter to burn out. The smell of a burnt catalytic converter is likened to the smell of 'tom cat p**s'. A replacement catalytic converter doesn't come cheap.

Mass Air Flow Sensor
The mass airflow sensor tells the car's computer to add the correct amount of fuel based on the amount of air being drawn into the engine for combustion. A faulty mass air flow sensor also affects mpg, increases emissions, and can cause the car to stall.

Mass airflow sensors can fail over time because of an improperly installed air filter - or an air filter that has never been changed. You should replace the air filter at least once a year to help prevent the airflow sensor from failing.

Spark Plugs
Yes, faulty spark plugs can cause the engine check light to come on - that's because misfiring plugs cause a problem elsewhere in the fuel/air management.
You may feel a 'jolting' when accelerating. Spark plugs fail and there's not much you can do to prevent that from happening.

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Probably knows as the gas cap in the USA?
Incredibly, an untightened or cracked filler cap can cause problems. Some modern cars even have an error code that suggests a faulty fuel cap.

The Exhaust Gas Recirculation valve.
In internal combustion engines, exhaust gas recirculation is a nitrogen oxide emissions reduction technique used in petrol/gasoline and diesel engines. An EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. It reroutes some of the exhaust gases which are emitted by the engine into the combustion chambers. This effectively reduces temperatures in the combustion chambers.
The exhaust gases from the engine can cause the egr plunger (or 'butterfly valve' - which is a small circular disk inside the throttle body) to stick open or closed, leading to differing symptoms such as engine knock when fuel is ignited too early or rough running. It is the engine timing which is affected.

Most EGRs can be removed and cleaned out. Most EGRs are expensive to replace.

Camshaft and/or Crankshaft Sensor
More often than not when these fail the engine will not start, but this isn't always the case nowadays. Some vehicles have a 'limp home' mode. Replacement of the faulty sensor is the only cure.

There's other sensors too. Your car is a veritable network of data being transmitted from/to a whole host of interconnected sensors.

For the home mechanic the most expensive - and frustrating - way of fixing something is to replace one part after the other in the hope that the problem is solved.

Your first course of action should be to have a diagnostic test carried out. Identify the fault first. It's well worth paying a mobile mechanic to carry out a diagnostic test first.

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