Air Fuel Ratio Senor

I am 70 in February. I can help and I have a Lexus ES330. I will list the links to the codes. You are going to need a mechanic, but you can give them the list of what is needed.

P1354 LEXUS Code - Variable Valve Timing System ...

https://www.engine-codes.com > p1354_lexus
'What Does the P1354 LEXUS Code Mean? Variable Valve Timing (VVT) system controls the intake valve timing to proper timing in response to driving condition. The ...

P0191 LEXUS Code - Fuel Rail Pressure Sensor Circuit ...

https://www.engine-codes.com > p0191_lexus
'What are the Possible Causes of the P0191 LEXUS Code? · Faulty Fuel Rail Pressure Sensor · Fuel Rail Pressure Sensor harness is open or shorted · Fuel Rail ...

P1135 LEXUS Code - Air/Fuel Ratio Sensor Heater Circuit ...

https://www.engine-codes.com > p1135_lexus
'What are the Possible Causes of the P1135 LEXUS Code? · Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 · Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness ...

P1153 LEXUS Code - Air/Fuel Ratio Sensor Circuit Response ...

https://www.engine-codes.com > p1153_lexus
'What is P1153 LEXUS code meaning? ... The Air-Fuel ratio (A/F) sensor varies its output voltage in proportion to the air-fuel ratio. Based on the output voltage, ...

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It may be a faulty oxygen sensor.
For Models 2005 and up:
- Faulty Air Fuel Ratio Sensor 1 Bank 1
- Air Fuel Ratio Sensor 1 Bank 1 circuit is open or shorted
- Air Fuel Ratio Sensor 1 Bank 1 circuit electrical connection

Before you rush off to buy replacement parts it's worth giving a mobile mechanic a call. Those guys are usually very good and far cheaper than a dealership. And a second opinion is worth paying for.
P1148 and P0031 Problem

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

It is called an "O2" sensor.

P0174 FORD - Fuel Injection System Too lean Bank 2http://engine-codes.com/p0174_ford.htmlForum CodePossible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem.

It's a very common problem for the Ford Windstar. Here a link to a web site with information how to repair:
When is the code detected?- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.) Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel ConsumptionP0174 FORD Description The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light.

There are different octane levels of fuel & different
manufactures use different additives,some of which are
required seasonally by federal & state regulations.

You can study the various fuel ratings,there is more
to it then just octane but there is no such thing a
better fuel.

You use what is recommended in your owners manual
& may be on a sticker on the fuel door


The O2 Sensors report oxygen content in the exhaust
converter & that is a main component to adjusting fuel
trim thus the ratios you refer to. The PCM,ECM,ECU etc
won't have a way to know the fuel chemistry


There are hundreds of somewhat fixed parameters in
a vehicles computer & it does try for a ratio on the air
fuel,but that is constantly moving as you have different
engine load as you drive.


The day you drive off the dealers lot with a new car
is is all down hill,no way to improve efficiency because
the engine wears & piston & valve carbon up etc.


Doing any excessive amount of preventative maintenance
over the years is all you can do.


Full Synthetic Oil -changed no more than every4000 miles
New Spark Plugs--every three years (No such thing as a Tune-Up
they left 25 years ago)
No vacuum Leaks
PCV Valve -never needs to be replaced, ever --clean it if you want
You can make you list as long as you want

You need to be working on all vehicles 3 or 4 times a year
You don't wait for break down issues you need to be proactive
& continually learning

If you want anything done correctly==you have to do it yourself

P2240 HONDA - Front Air/Fuel Ratio Sensor Bank 2 Sensor 1 IP Line High Voltage.
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- High Fuel Consumption
- Excessive Smoke from Exhaust Possible causes - Air/Fuel Ratio Sensor Bank 2 harness is open or shorted
- Air/Fuel Ratio Sensor Bank 2 circuit poor electrical connection
- Faulty Air/Fuel Ratio Sensor Bank 2
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Ok as a guess that you have a SUV and you have different air faults. if you are a DYI'er go to an auto parts store and get an error code tool. Harbor freight for $30-50. Hook it to the car and find out which sensor is it calling for. Note, you can reset the check engine light on most tools that are not the cheapest.
P1130
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 1 Sensor 1)

P1133
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)

P1135
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1150
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 2 Sensor 1)

P1153
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)

P1155
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1133 LEXUS - Air/Fuel Ratio Sensor Circuit Response Malfunction Bank 1 Sensor 1 Possible causes Faulty Air/Fuel Ratio Sensor Bank 1 Sensor 1 Air/Fuel Ratio Sensor Bank 1 Sensor 1 harness is open or shorted Air/Fuel Ratio Sensor Bank 1 Sensor 1 circuit poor electrical conection Check exaust integrity

P0171 - Fuel Injection System Too Lean Bank 1
Possible Causes:
- Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection

P0174 - Fuel Injection System Too Lean Bank 2
Possible Causes:
- Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection

What Causes These Codes: Fuel injection system does not operate properly. The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.) The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light. The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem.