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Fuel air ratio i had to buy the sensor at the dealership and now all of the part houses insist the it doesnt exist, it's in the manual and I have bought one previously.
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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.
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
I get my from advanceautoparts. I buy the Bosch ones, single wire. Make sure to put on anti-seize paste and some dielectric grease on the connector
http://shop.advanceautoparts.com/p/bosch-premium-oxygen-sensor-13043/19370003-P?searchTerm=o2
Part No. 13043
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)
P0171 sets when air/fuel ratio feedback is stable after engine warm up, & fuel trim is considerably in error on the lean side. The signal from a/f ratio sensor is approximately proportional to existing air-fuel ratio. CHECK: system for intake leaks, incorrect fuel pressure, plugged fuel injectors, 02 sensors or coolant sensor operation. check air fuel ratio sensors. to test main AFR sensors directly you will need a good scan-tool to test parameters. A thorough preliminary check is important. If you take your time you may find the answer before you start playing the "process of elimination " game. Good luck, let me know how it is going.
this code sets when air fuel ratio feedback is stable after engine warm up,and fuel trim is considerably in error on lean side;The signal from air fuel ratio sensor is approximatelyproportional to existing air-fuel ratio.
for this code suspect excessive lean condition,normal rangefor total trim is between -35% to +35%,DTC uses "two-trip detection Logic".
Check system for intake leaks,incorrect fuel pressure,plugged fuel injectors,O2 sensor or coolant sensor operation.
check air-fuel ratio sensors
to do it you need to check them with a good scanner tool.
also,check MAF sensor operation.
personally i would clean with the special spray for MAF sensor (you can get it from you autoparts store) and try a fuel injector cleaner before start spending money in shops.
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