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View Poll Results: What check engine light codes have you had?
MAF-P0100/0101 34 9.42%
IAT-P0110 7 1.94%
ECT-P0115/0116 7 1.94%
TPS-P0120/0121 8 2.22%
INCOOLTEMP- P0125 44 12.19%
AFOXYSEN- P0136/0141/1130/1133/1135/1150/1153/1155 333 92.24%
LEANRICH-P0171/P0172 190 52.63%
MISFIRE-P0300/0301/0302/0303/0304/0305/0306 236 65.37%
KNOCK-P0325/0330 59 16.34%
CPS-P0335/0340/1335 6 1.66%
CAT-P0420 32 8.86%
EVAP-P0440/0441/0446/0450/0451 90 24.93%
VSS-P0500 15 4.16%
IDC-P0505 7 1.94%
ICT-P1300/1305/1310/1315/p1320/1325 34 9.42%
VVT-P1345/1346/1349/1350/1351/1354 65 18.01%
STOPL-P1520 1 0.28%
ECM-P1600 1 0.28%
ECU-P1645 1 0.28%
OCV-P1656/1663 1 0.28%
IGNIT-B2785/2786 0 0%
KEY-B2791/2795 0 0%
COMM-B2796/2797/2798 3 0.83%
Multiple Choice Poll. Voters: 361. You may not vote on this poll

What CEL (check engine light codes) have you had?

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Old 01-12-08, 03:17 PM   #1
Lexmex
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Default What CEL (check engine light codes) have you had?

I tried to set up this poll a few times with no luck, so this is my latest attempt. I have grouped similar codes together without text.

Many thanks to Bob2200 for suggesting this.

Keep in mind to those visiting the forum for the first time, the fact that we are listing these codes by no means suggests the RX300 is a problematic vehicle (far from it), but the fact that in this forum we have been able to fix many of these codes on our own (rather than having to spend vast sums) is a true testament to the fine legacy of this vehicle. This is by no means meant to be a scientific poll.
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Homepage of my 1999 RX300 AWD

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Old 11-28-08, 11:37 AM   #2
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Codes can be accessed via an OBD2 scanner. AutoZone and many car parts stores often will read the codes for you for free.

The location for the input of the scanner is here. There is a black plastic cover that easily comes off to reveal the OBD port.
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Homepage of my 1999 RX300 AWD

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Old 01-25-09, 08:23 PM   #3
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OBD2 code scanners are relatively inexpensive and work across a variety of vehicles (generally 1996 model vehicles and newer). This is my trusty Actron CP9125 that I purchased for under $100 USD. They pay for themselves.

Amazon.com and better yet ebay are inexpensive places to find these scanners for much less than sold at auto parts stores. Many advanced scanners for under $100 USD can access information such as A/F sensor readings, coolant temperature, air intake temperature. In addition, if you have laptop there are many programs (with purchase of applicable hardware) that can connnect the laptop to your vehicle to enable the greatest amount of information to be displayed.

I recommend if you also have a 2005 or later model year vehicle (though there are some 2003-04 vehicles this will apply to) in addition to your RX300 to get a scanner that has the CAN protocol in order to work with those newer vehicles. An OBD2 scanner with or without CAN will still be able to scan your RX300. However, I highly recommend to pay the slight extra $$$ to get a CAN OBD2 scanner to increase its usefulness for all vehicles you may own. One other note, most vehicles before 1996, used OBDI, which is not compatible with an OBDII scanner.

All vehicles sold in the US effective the 2008 model year use CAN.
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Homepage of my 1999 RX300 AWD

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0301, 0441, 0446, 1130, 1135n, 1310, 1999, actron, code, engine, es300, lexus, ls400, obd2, ocv, po115, rx300

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