Question about 2002 Lexus RX 300

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Getting a code p1155 on my 2002 rx 300, what do I need to do to fix it?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: where is sensor 1 bank 1 located on lexus rx 300 2002

facing engine bank1 sensor 1 should be the one at the firewall area in the manifold

Posted on Nov 12, 2008

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SOURCE: transmission fluid for rx 300 2002

use only toyota T-IV fluid. Anything else will cause major transmission problems.

Posted on Dec 26, 2008

dsacco86
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SOURCE: getting code p1135 and p1155 on toyota rav4

Here's what the codes mean:
P1135 Air/Fuel Sensor Heater Circuit Response (Bank 1 Sensor 1)
P1155 Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2

This is mainly related to the oxygen sensors. It maybe the sensors themselves or an open wire going to te sensors. They are mainly located on the exhaust pipe. One before and on after the catalytic converter.

Posted on Apr 15, 2009

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SOURCE: I have a p1155 error code on a 2002 toyota

P1155: Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) The sensor is on the Bank 1 throttle body with electrical connection. Its a delicate sensor. Unscrew it from the throttle body and check if its dirty, spray it with electronic cleaner with care. If its damaged, just replace it. If its not rectified, the car computer may default the air temperature to 20 degC and the air flow will not be correct and may have the following effect: 1. You might have difficulty in winter startups 2. Loss fuel efficiency (air/fuel ratio is messed up)/NOx problems/failed emission test/prematured catalytic converter replacement etc. CLARIFICATION An Air Fuel Ratio Sensor is also known as Wide Range Oxygen Sensor. Bank 1 Sensor 1 is mounted in the exhaust header before the Catalytic Converter (CC). The ECU uses the signal from the AF sensor to adjust Air/Fuel ratio. On V6 and V8 engines there is a second AF Sensor in the other header. (Bank 2 Sensor 1). After the CC there is a narrow range O2 sensor called Bank 1 Sensor 2. It monitors the CC. If there are two CCs there is a second O2 sensor (Bank 2 Sensor 2) The AF Sensor draws about 3 amps so check connections. The heater is a resistor between the B+ and HT terminals of the plug. On V engines there is also a AF relay to check.

Posted on Feb 05, 2010

awcforever
  • 359 Answers

SOURCE: HI I have toyota avensis verso

Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2)

The A/F sensors are positioned high in the manifold before the cat and are used to make adjustments to the air/fuel ratio of the fuel injection system. The heated oxygen sensors are positioned after the cat and check the efficiency of the cat (what happened in there as a result of the A/F sensors above). They too can signal changes to the air/fuel ratio. These latter sensors only work when they are hot and need to be electrically heated quickly to give decent information quickly. They work by comparing the oxygen inside the exhaust with the oxygen on the outside.

You could say that the ones before the cat make large adjustments and the ones after make smaller refinements.

It is worth remembering that a fault code could have been stored because at some stage the sensor went outside of its range and for this reason it is always worth cancelling any stored codes as this sometimes puts the light out. There are also several other reasons why a sensor could be showing a fault (it is correctly saying that something else is causing incorrect air/fuel ratio) such as leaky EGR valves or vacuum pipes so just have a look around to see if there is anything obvious.

The DTC code will normally indicate the exact sensor that is faulty or at least showing out of range and not the group of sensors. In this case as you stand looking at the engine from in front of the car it is the top one on the drivers side.

Keep in mind they are sensitive devices (read that as fickle) and although you should start there you can often end up changing more than one and some cases even the cat before you can get them to settle down.

Good luck.

Posted on Mar 07, 2011

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1 Answer

I'm getting extremely poor gas mileage on my 99 lexus rx 300. New plugs,air filter, oil change and checked to see if my tires are properly inflated!One code came up 0441 or 0446, I can't remember.


You have a problem in your Evaporative Emission Control System. Not much you can do without the right equipment. A mechanic needs to diagnose this with his testing tools. Good luck!

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To get codes you need a code reader compatible to your ECU. Usually 1996 and up use an OBD2 system located underneath the dash somewhere. You connect your OBD2 reader to the connection point and start your diagnostic. It will then read back to you what codes the ECU is reporting. You then look up the codes online or through an autoshop and they can tell you what is causing you problems.

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That's a traction control or skid control system indicator. Usually these systems are on by default, so if you turn them off (or if they fail) the indicator will come on so you know the system is not engaged. I would have a shop scan the computer for fault codes to see if a failure is logged - it may be with a yaw sensor, or a wheel speed sensor (which could also manifest as an ABS problem), or some other fault, including a possible stability control computer failure or fault. But the first step is to see if there are any codes stored in the system, and those codes will point you in the right direction to fix the problem.

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