Question about 2004 Ford F150
-truck runs fine when the issue doesn't occur -trucks has issues accelerating when it does -recently changed a few ignition coils -this issue is on and off -doesn't seem to happen at low speeds -no other codes come on
Code 171 means the O2 sensor is telling the computer the fuel mixture for bank one is too lean. Bank one is the side with cylinder number one. The problem could be the sensor, or something else like an injector that is actually causing the fuel mixture to be lean. The sensor would need to be checked.
Posted on Jul 11, 2013
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: Trouble code P2135, and P2106.
I have the same problem on my 06 explorer.
Ford Dealership told me i needed my "electronic throttle body assembly" replaced.
It would cost about $630.
I'm a little hesitant to let them do that service though, because it may not be the whole thing that needs replacing. I'd just look in to getting the Throttle Positioning Sensor replaced.. which would cost a lot less.
Posted on May 24, 2009
if the engine light is flashing, it means you have a misfire in one or more cylinders. it is most likely plugs or coil wires.
mine started doing this a few weeks ago. finally got around to changing the plugs today. the cylinder order on fords is easy, passenger side from front to back is 1234, driver side front to back is 5678. my number 4 cylinder had a plug that was collapsed. the metal piece was crushed into the contact, not allowing any spark.
Posted on Jul 13, 2009
Code definition is Electronic Pressure Control (EPC) Solenoid. This solenoid is located in the trans pan. Driving the explorer without getting it fixed could also wear down other parts in your transmission!
Posted on Jul 29, 2009
4.2 ltr missing. 2000 truck, f150. Changed plugs, wires. Ran great for 2 weeks. Started again. Changed coils. Got worse. Changed fuel filter, did nothing. Added injector cleaner and fuel cleaner, nothing. Checked EGR, o.k. It is getting worse. Had new gas about the time it all started.
Posted on Jul 08, 2011
Tips for a great answer:
Jan 21, 2016 | 1997 Mercury Villager
Mar 29, 2014 | 1996 Ford Explorer
Mar 15, 2013 | 2004 Ford Mustang
Jul 13, 2012 | Chevrolet Silverado Cars & Trucks
Dec 10, 2010 | 2004 Ford Explorer
Aug 11, 2010 | 2005 Ford Taurus
Jul 04, 2010 | 2004 Ford Focus
System Too Lean (Bank 2)
Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust.
Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.
Dec 17, 2009 | 2002 Ford Windstar Cargo
Aug 10, 2009 | Hyundai Elantra Cars & Trucks
85 people viewed this question
Usually answered in minutes!