1999 RX 300 check light

[a***@att.net]

My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.

Abid

[Ray O]

Post by a***@att.net
My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.
Abid

Abid,

There are literally hundreds of possible causes for the check engine light.
The gas tank cap should be tightened until you hear it clicking. If a loose
gas cap is the cause, the check engine light will turn itself off after a
few trips.

Bring your vehicle to a place like Autozone that will lend you a scanner to
plug in to the test port under the driver's side of the dashboard. Note the
numerical trouble code, post the code(s) here, and I can provide some things
to check.

[a***@att.net]

Post by Ray O

Post by a***@att.net
My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.
Abid

Abid,
There are literally hundreds of possible causes for the check engine light.
The gas tank cap should be tightened until you hear it clicking.  If a loose
gas cap is the cause, the check engine light will turn itself off after a
few trips.
Bring your vehicle to a place like Autozone that will lend you a scanner to
plug in to the test port under the driver's side of the dashboard.  Note the
numerical trouble code, post the code(s) here, and I can provide some things
to check.
--
Ray O
(correct punctuation to reply)

Thanks Ray, the code is P1133

[Anonymous]

Seems you've got plenty of company!
http://www.google.com/search?hl=en&q=%2B%22P1133%22+%2B%22lexus%22&aq=f&oq=

Post by Ray O

Post by a***@att.net
My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.
Abid

Abid,
There are literally hundreds of possible causes for the check engine light.
The gas tank cap should be tightened until you hear it clicking. If a
loose
gas cap is the cause, the check engine light will turn itself off after a
few trips.
Bring your vehicle to a place like Autozone that will lend you a scanner to
plug in to the test port under the driver's side of the dashboard. Note
the
numerical trouble code, post the code(s) here, and I can provide some things
to check.
--
Ray O
(correct punctuation to reply)

Thanks Ray, the code is P1133

[Ray O]

Post by Ray O

Post by a***@att.net
My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.
Abid

Abid,
There are literally hundreds of possible causes for the check engine light.
The gas tank cap should be tightened until you hear it clicking. If a
loose
gas cap is the cause, the check engine light will turn itself off after a
few trips.
Bring your vehicle to a place like Autozone that will lend you a scanner to
plug in to the test port under the driver's side of the dashboard. Note
the
numerical trouble code, post the code(s) here, and I can provide some things
to check.
--
Ray O
(correct punctuation to reply)

Thanks Ray, the code is P1133

*******
P1133 is a Toyota-specific code - Air/Fuel sensor circuit response
malfunction

An air/fuel sensor is kind of like an oxygen sensor, and I believe that it
is only installed on vehicles with California emissions requirements.
Unfortunately, I do not have access to a factory repair manual for your car,
so I can only guess that since the trouble code does not identify which of
the 2 A/F sensors is bad, that there is an open or short in the circuit for
the sensors. Inspect the wiring for the sensors, which should be mounted
near or above the O2 sensors on the exhaust manifolds and look for damage to
the insulation and wires. If you are in the U.s. and are willing to pay
$10/day, you can go to techinfo.toyota.com for access to the factory repair
manuals and wiring diagrams as well as specific instructions for diagnosing
the trouble code. Diagnosis will require a code scanner with the ability to
display voltages from particular sensors, or a volt/ohm meter.

[Richard J Kinch]

Post by a***@att.net
Thanks Ray, the code is P1133

1999? You're ripe for a sensor replacement. Bear of a job to get at it.

[j***@hotmail.com]

Parts stores like Autozone and others have OBD-II readers and other
tools on their Free Loaner Tool program. This including oxygen sensor
sockets. So you can always check your local store's policy.

Denso sensors don't seem to be the most reliable sensors, but they are
cheap. However, on some cars they may be the only choice. P1133
indicates Bank 1 Sensor 1, which is the right bank. If it's seized
from road salt/corrosion, you may have difficulty in removing it.
Otherwise the $137+shipping (www.rockauto.com) #2349009 Denso (Toyota
#89467-41011) should be fairly easy to replace if you or friends are
mechanically inclined.

Read also the P1133 experience of others on:
http://clublexus.com/forums/rx300-forum/103353-code-p1133-a-f-sensor-and-shift-problem.html

Post by a***@att.net
My RX300 check light came on yesterday, I cheked the under the hood
and everything looks normal, I checked the gas tank cap and made sure
it is tight, car runs fine but I am concern.
please help.
Abid