Question about 2001 Lexus RX 300

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Check engine light need help

Put new battery in 2001 lexus rx300 drove about 45 miles. check engine came on.code p1135 and p1130. car runs great. also i put fuel injector cleaner in it pior. what is happening and how to fix the problem?

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  • garyz39 Mar 03, 2009

    intermittent check eng light....code 1130......i'm guessing the air fuel ratio sensor (basically looks like typical o2 sensor)

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Hi kelly4578, Your Air/Fuel Ratio sensor is failing. It is also called the Bank One sensor. The sensor itself is about $200 from a parts distributor and somewhat more than that at a Lexus parts department. Labor to remove the old sensor and replace it with the new one will also run you several hundred dollars.

If you're mechanically inclined, you can tackle this repair yourself. But you must first determine the exact location of the failed sensor. And be careful not to strip the threads in the manifold when you remove the old sensor.

Let me know if this helps and please rate this solution. lone99star

Posted on Jan 12, 2009

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Oct 30, 2015 | 2001 Lexus RX 300

1 Answer

Code p1130 p1135 p1150 what are this ??? Thanks


p1130= bank one sensor one, Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (sensor is located underneath near the firewall) p1150= bank two sensor one, Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Directly behind the radiator) p1135=bank one sensor one, Air/Fuel Ratio Sensor Heater Circuit Malfunction Bank one sensor one sensors run around $206 Bank two sensor one sensors run around $150
basically its o2 sensors if your mechanically inclined its a good weekend job to tackle yourself and safe a couple hundred dollars in labour, you would need to invest in an o2 socket and some pbblaster penetrating lubricant to get them out..hope this helps you and dont forget to rate if it does help thanks

Jan 07, 2011 | 2001 Lexus RX 300

1 Answer

I have a 2000 Camry - 6 cylinder with about 180,000 miles on it. The Check engine light came on and it showed three codes - P0125, P1130 and P1135 - We put in a new thermostat - and still the check engine...


Was the computer reset after the thermostat was replaced?? If not, it must be reset to clear prior codes. as for the p1130/1135, they are related here is some info>>>>http://www.engine-light-help.com/toyota-engine-light.html

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1999 Camry 4 cyl. 104k miles, throwing codes p0125, p1130, p1135


P0125- Engine not reaching operation temp quick enough. Possible problems:
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1 Answer

Code p1130. where is the sensor located on a 2001 rx300 lexus


P1130 Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 1 Sensor 1) 
This sensor is the hardest to get at. It is between the cat and the cylinder block on the bank of cylinders closest to the firewall. Not much wiggle room back there.
Sensor will run you about $225 from Toyota, $275 from Lexus, but you may be able to get a Denso sensor on line.

Good luck and hope this helps. keep me posted. 

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99 RX300 Engine code keeps coming up lean


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I have a 2001 lexus rx300 with 91,000. Should I have the timing belt replaced. the car runs great but was told should have it done as a precaution.


YEP REPLACE THE TIMING BELT. BECAUSE ITS CHEAPER TO REPLACE TIMING BELT.THEN TO OVERHAUL ENGINE THE ENGINE PUTTING IN NEW VALVES AND PISTONS.

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