Question about 2003 Lexus RX 300
What is the drive cycle for a 2003 lexus rx300 that failed inspection after replacing an o2 sensor
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 2002 es 300 lexus
There is one before each catalytic converter (usually up right near the exhaust manifolds), and one after each cat (or if you have a Y-pipe exhaust that brings the two sides together to one pipe and one converter, then there's one after that single converter). Why do you want to change them? Have you gotten failure codes or are you having poor gas mileage? Or have they just been in there a long time? They're usually good for about 60k miles, although of course they can fail early. Usually the symptoms are poor fuel economy, running rich (seen by black smoke out the tailpipes and some rough idling, as well as blackened spark plugs), or fault codes dealing with system-lean or system-rich descriptions. Those symptoms are indicative of bad primary O2 sensors (the ones closest to the engine). If your secondary sensor(s) are failing (the post-cat sensor or sensors) you'll trip a check-engine light warning you of poor catalytic converter efficiency.
Posted on Sep 28, 2008
according to the manual i have... it has three.... one in the exhaust manifold.... and two in the exhaust pipe..... slightly vauge on the exact location of the last two sensors... but looks like it is after the catylitic converter.
Posted on Apr 15, 2009
Unscrew 3 - 4 screws on the front tire fendor cover close to your side marker light. Pull the fender cover out, use your other hand to reach the side marker light. Using twist and pull the light set out. Replace a new light bulb. Replace everything in a reverse order.
Posted on Aug 18, 2009
SOURCE: my lexus rx 300
bank number would be either side of the engine(sorry im not possitive which), sensor number would be coming from engine, down the exhaust, the first sensor is number 1, Etc...
Posted on Jan 21, 2011
SOURCE: 2003 Lexus GS300 P0031 code
Yes the O2 sensor preheater problem will turn on the VSC light, see the complaint often, why? don't know
.P0031 TOYOTA - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1
In most cases the O2 being replaced cures the code but here is the full story.
Possible causes- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit open shorted to ground
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)
Posted on Jun 17, 2012
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