Question about Cars & Trucks
Check engine light code reading p2271, O2 sensor stuck rich-Bank 1, sensor 2. what does this mean?
Posted by Anonymous on
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: 2005 expedition 5.4 bank 1
un plug the fuel injector and see if the raw fuel smell, goes way, if it does the injector could be stuck open. if this is the case the more you run it the more fuel is getting into the crank case, this can wash the bearings and ruin the engine, check the oil see if you smell fuel if you do, you will have to pull up the injector rail with all the injectors and cycle the key one time, watch that injector to see if it drips fuel after the rest have stopped . if it leaks replace the injector all the injector o rings and change the oil.
Posted on Dec 20, 2010
Is the wiring good going to the O2 sensors? Maybe just look the car over and see if you have any bad grounds. They can do weird things. Could be a bad ICU.
Posted on Jan 22, 2012
- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Front Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
Replacing the O2 Sensor 1 usually takes care of the problem
The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.
Posted on Feb 07, 2012
SOURCE: 2005 Mazda Tribute P0172 & P2270
Hi Paul, Have you had a fault code relating to the knock sensor? That sensor controls ignition timing which can have a relationship to the fault codes you report? Regards John
Posted on Apr 06, 2013
Tips for a great answer:
Jan 27, 2017 | 2008 Chevrolet Silverado
Jul 30, 2015 | Cars & Trucks
Feb 28, 2015 | Cars & Trucks
May 27, 2013 | Cars & Trucks
Jan 22, 2012 | 2002 Subaru Forester
Sep 28, 2011 | 2005 Honda Accord
Feb 06, 2011 | Hyundai Elantra Cars & Trucks
Aug 06, 2010 | Hyundai Elantra Cars & Trucks
267 people viewed this question
Usually answered in minutes!