Question about 1997 Toyota RAV4

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I have found the code for my 2001 rav 4 the code is P1155 sensor heater circuit, how can i fix that what part do i need to fix it?

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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.

i have found the code - jturcotte_1781.gif

Posted on May 29, 2011

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Related Questions:

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

2 Answers

P1155 code


Do you only have one o2 sensor? Many cars have two- one in front of catalyst, one behind. The front one is for fuel trim.
Also, that code is for the whole o2 circuit, right? Might need to keep checking. Does your car have a heated o2 sensor? Just another circuit to check, if so. good luck.
Looked at your post again. See where you said o2 sensors. Already changed both, huh? Wow. good luck. Might need a multimeter for resistance test of circuits.

Oct 29, 2011 | 2001 Lexus RX 300

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

My diagnostic code was P1155 what is that


Air/Fuel sensor heater circuit malfunction (Bank 2, Sensor 1). Replace that sensor, disconnect the battery for one minute, reconnect = problem solved.

Jan 19, 2011 | 2001 Toyota Camry Solara

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

1 Answer

2003 Rav 4 has P1135 error code. What is wrong


A/F Sensor Heater Circuit Malfunction (Bank
1 Sensor 1).
You most likely have a bad Air fuel sensor bank 1 sensor 1.

Oct 25, 2009 | 2003 Toyota RAV4

1 Answer

My check engine light is on and I received code P1135, Manufacturer Control Fuel Air Metering is the defintion of the code. What parts do I need to get to fix problem myself?


Not sure where you got that definition for that code but this is what it is and means with possible causes for whichever motor you have:

Trouble Code: P1135 (2.4L L4 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - I4 - P1135, P1155


Trouble Code: P1135 (3.0L V6 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - V6 - P1135

Oct 21, 2009 | 2001 Toyota Highlander

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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