Question about 2001 Toyota 4Runner

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Where is the o2 a/f ratio sensor - 2001 Toyota 4Runner

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Here is the location of the sensorwhere is the o2 a/f ratio sensor - feaa012.jpg

Posted on Sep 26, 2009

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It should be located somewhere on the 'head' exhaust pipe between the muffler and the engine and looks somewhat like a spark plug with wiring on the outer end.

Posted on Sep 26, 2009

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It will be either in the exh manifold or directly after the exh manifold, in the exh pipe.

Posted on Sep 26, 2009

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Posted on Jan 02, 2017

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SOURCE: Check engine light

Sometimes can be prematurely dirty air filter, sets off the air flow sensor, which sets off the o2 sensor. So might try new air filter first and erase codes and then see, before you spend more bucks than you need; then if codes return, do the flow mix sensor.

Posted on Feb 11, 2010

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P1273 Manufacture contr fuel air metering 2004 nissan sentera


P1273 Nissan P1273 Nissan - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1 Possible causes
- Faulty Air fuel ratio (A/F) sensor 1 Bank 1
- Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1
- Fuel pressure
- Faulty Fuel injector
- Intake air leaks
- Faulty Air Flow Meter
Most probable is you have a bad heater in your upper bank 1 O2 sensor. Replace all of your O2 sensors.

Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgP7CTD8
Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgOwiMU8

Aug 27, 2015 | 2004 Nissan Sentra 1.8

1 Answer

What are the probable causes of DTC P1283?


code p1283 refers to heated oxygen sensor(HO2S) bank 2--lean mixture ===causes ---HO2S---fuel pressure --injectors---intake air leak
the HO2S sensor is the one immediately in the exhaust manifold or before the cat converter ---you have changed the wrong unit and that is why there has been no change ( on a v 6 bank 2 is the bank at the grill side )
both the HO2S and the O2 sensor report on the air /fuel mixture to the ECM which makes the changes so it would be true to say that .
check all vacuum hoses for cracks or loose and check the vent controls hoses as well as any leak there will alter the mixture ratio and make it difficult for the ECM to maintain correct air/fuel ratio

Aug 09, 2015 | 2005 Infiniti G35

1 Answer

What is a P015A code? and what do I need to do to fix it?


More then likely you need a O2 sensor !Don't know what make vehicle you have so I checked a couple an they all came up same thing , slow response bank 1 sensor 1 ! And O2 sensors are different from air fuel ratio sensors !

OBDII Code P015A NISSAN SENTRA Air Fuel Ratio Sensor 1 Bank 1 Circuit...

Apr 16, 2015 | Cars & Trucks

1 Answer

Service Engine light code 431


Here is the definition for code 431.

P0431 MITSUBISHI Description The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).

A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.

When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed. The problem could be the catalytic converter, one of the O2 sensors, or an air leak in the exhaust system.

Read more: http://engine-codes.com/p0431_mitsubishi.html#ixzz2EnHWZTpR

Dec 11, 2012 | 2007 Mitsubishi Outlander XLS

1 Answer

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)

Jun 16, 2012 | 2003 Lexus Gs 300

1 Answer

How many sensors o2 dodge neon have


P0732 Gear 2 Incorrect Ratio
P0720 Output Speed Sensor CKT Malfunction
P0736 Reverse Incorrect Ratio
P0500 Vehicle Speed Sensor Malfunction
P0700 Trans Crt l System Malfunction
P0731 Gear I Incorrect Ratio

Feb 09, 2012 | 2002 Dodge Neon

1 Answer

What is p1148


P1148 - Closed Loop Control Function Bank 1
This mean that the closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition.

The Powertrain Control Module (PCM) or Electronic Control Module(ECM) monitor the function of the Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor by comparing the signal with the Rear O2 sensor.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes:
- Harness or connectors Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor 1 circuit is open or shorted.
- Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1
- Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1 heater

Possible solution:
- Repair harness or connector. If repair is needed
- Replaced Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1


Then, possible causes are faulty harness or connectors to the air fuel ratio sensor, a faulty air fuel ratio sensor (1) or faulty air fuel ratio sensor (1) heater. Most likely yes it is just faulty sensor. Just replace this devices and reset the stored codes.

Keep us updated.

Feb 10, 2011 | 2005 Nissan Altima

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

Fuel ratio sensor replacement


The air/fuel ratio sensor is just a four wire (pre-heated) O2 sensor. It is right in front of your O2 sensor and can be replaced with only a wrench. The cheapest i found it was for $186 at partsgeek.com and i hear that at the dealer it costs $255.

i hope this is helpful
-matthew

Oct 26, 2009 | 2004 Honda CR-V

2 Answers

Check engine light


Sometimes can be prematurely dirty air filter, sets off the air flow sensor, which sets off the o2 sensor. So might try new air filter first and erase codes and then see, before you spend more bucks than you need; then if codes return, do the flow mix sensor.

Apr 19, 2009 | 2006 Honda Civic Hybrid

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