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Code p1155 A/F sensor heater circuit - 2002 Toyota Avalon

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6ya6ya
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Posted on Jan 02, 2017

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  • 318 Answers

SOURCE: i have a toyota rav4 2003 management light came on

The upper sensors are air fuel sensors and the lower ones are o2 sensors. you cant mix these up. Assuming you did everything right and still coding then either the new sensor b1s2 is bad or the wirng(power and ground need to be checked. A scan tool can be used to look at the performance of the sensors too. Sometimes the codes just point to the area of the problem and changing the part isn't the answer.

Posted on Nov 15, 2009

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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

jturcotte
  • 8266 Answers

SOURCE: i have found the code

Hi, assuming you have the 4-cylinder engine, this is your downstream oxygen sensor. Look carefully at the picture to find the right sensor, as there are several similar sensors on the truck. Before buying a new sensor, check the resistance of the heater in the sensor by disconnecting the sensor and connecting an ohmmeter to the terminals indicated in the second picture. The resistance should be 11-32 ohms, depending on the temperature (if the truck is hot from running, the resistance should be at the higher end of the range). If the resistance is outside this range, replace the sensor. You'll need a line wrench or special socket to remove the sensor, as the pigtail is an obstacle to a regular deep well socket. Please let me know if you have more questions, and thanks for using FixYa.

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Posted on May 29, 2011

toyotahelp
  • 374 Answers

SOURCE: how do you change an air/fuel sensor heater circuit (bank1, sensor2)?

The heater is part of the sensor assembly, the usual fix is to replace the A/F sensor , in this case bank one is near the firewall and sensor 2 is just behind the catalityc converter for bank one.

Posted on Nov 18, 2012

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2 Answers

Is the p1135 sensor connector the same as the p1155 sensor connector?


Most likely not, they look the same but the plastic shell has a ridge coded into it that prevents hooking it up to the wrong sensor. I think you may have an issue with the O2 heater circuit, loss of ground or power.

Jul 22, 2017 | Cars & Trucks

1 Answer

I have a Toyota Rav4 2002 code 1155and1135 for fuel/air


code p1155 refers to heated oxygen sensor(HOS)-RH front heater circuit malfunction==causes -wiring--HO2S-- ECM. Replace the oxygen sensor.
Code p1135 refers to heated oxygen sensor(HO2S) -LH front-heater circuit malfunction==causes --wiring--HO2S--air induction system--fuel pressure--injectors--ECM replace the o2 sensor and have a pressure test done on the fuel manifold to check for pump/regulator/ filter problems.

Sep 06, 2013 | Cars & Trucks

1 Answer

How do you change an air/fuel sensor heater circuit (bank1, sensor2)?


The heater is part of the sensor assembly, the usual fix is to replace the A/F sensor , in this case bank one is near the firewall and sensor 2 is just behind the catalityc converter for bank one.

Nov 17, 2012 | 2002 Toyota Avalon

2 Answers

Check engine sign appeared on my 2001 avalon , code error p1155, please advise


Appears it is an Oxygen sensor error, they are located in the exhaust system, in the v6, that code indicates the second bank (but unsure which bank that is) Ideally you need to take the car in for service, or at least inspect the Oxygen sensors, the code indicates that teh heater element has failed.

May 06, 2011 | 2001 Toyota Avalon

1 Answer

I have a code of p1155 bank 1 sensor 2. which sensor is that


CODE P1155 HEATED OXYGEN SENSOR RIGHT HAND FRONT HEATER CIRCUIT MALFUNCTION.

Feb 14, 2011 | 2003 Toyota RAV4

1 Answer

Code p1155


P1155 Air/Fuel Sensor Heater Circuit. (Bank 2 Sensor 1)

Actually P1155 is pointing to a fault with the internal heater for the A/F Sensor (aka Oxygen Sensor) for Bank 2 Sensor 1. The PCM uses this internal heater to get the sensor to normal operating temps within a matter of seconds on cold starts. Replacing this sensor should solve your problem. This sensor is located in the front exhaust manifold.

Hope helps (remember rated this).

Aug 07, 2010 | 2001 Toyota Highlander

2 Answers

The check engine light produced codes p1150 and p1155 on a 2000 toyota avalon xls.


All cars sold in the US after 1995 use the same on board diagnotics called OBD-II. The codes are the same. Search OBM-II error codes and you'll get a listing.

P1150 Air/Fuel Sensor Circuit Range/Performance. (cylinder bank 1 Sensor 2)

P1150 may mean that one or more of the following has happened:
water or corrosion in the O2 sensor connector, loose terminals in the connector, wiring burnt on exhaust components, open or short in the wiring due to rubbing on engine components, holes in exhaust allowing unmetered oxygen into exhaust system, unmetered vacuum leak at the engine, bad O2 sensor or bad PCM.

P1155 Air/Fuel Sensor Heater Circuit. (cylinder bank 1 Sensor 2)
P1155 may mean that one or more of the following has happened: O2 Heater element resistance is high, Internal short or open in the heater element or O2 heater circuit wiring high resistance

Solution :Replace oxygen sensor and see if the problem goes away.

Nov 16, 2009 | 2000 Toyota Avalon

3 Answers

Getting code p1135 and p1155 on toyota rav4 2002


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.

Apr 15, 2009 | 2002 Toyota RAV4

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