Q: Why can't i fix O2 sensor problem
Have replaced both o2 sensors due to car running lean. Engine light comes back on again.
My car has 60000 miles.
My car has a manual transmission.
Recommended Services
| Fuel Injector Replacement | $400.56 - $3968.30 | Get a Quote |
| Check Engine Light is on Inspection | $94.99 - $114.99 | Get a Quote |
In many circumstances, the O2 sensors are not the only culprit of a lean fuel curve. In many cases, a clogged fuel injector nozzle can also trigger the most common OBD-II error code (P-2191) that indicates a lean condition exists. Try removing and cleaning your fuel injector nozzles first, then reset your error codes, start the motor again, and complete the scan again. If that doesn’t work, have the previous mechanic check their work or have another local expert, like one from YourMechanic, diagnose the Check Engine code to have it properly corrected.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
How do I mute a Uconnect phone call?
When you are in a Uconnect phone call, you can easily mute your voice. When you are in mute mode, you will still be able to hear the person you are on the phone with, but they won’t hear you....
Car sputtering when driving.
The problem is most likely a fuel related problem like a fuel pump that works but does not produce enough pressure and a fuel filter that is clogged and needs replaced (https://www.yourmechanic.com/services/fuel-filter-replacement). The recommendation is to get a qualified mechanic...
How do I adjust the interior light dimming time?
When you open a door to your vehicle, the interior lights will come on, even if there isn’t a key in the ignition. When you then close the doors, the lights will stay on for a short period of time,...
Hear a squealing noise when I put it into gear
That squealing noise is commonly caused by a worn out serpentine belt (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-serpentine-drive-belt) and belt tensioner (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-drive-belt-tensioner). Your Escape is at about the right age and mileage (https://www.yourmechanic.com/article/how-long-does-a-serpentine-drive-belt-last) for the belt to be worn out. A technician from YourMechanic can...
We changed the temperature sensor because we broke it and now the check gauges light won't quit flashing, and the temperature gauge jumps to high
Assuming that your vehicle is not actually overheating, this leads me to believe that the replacement temperature sensor (https://www.yourmechanic.com/services/coolant-temperature-switch-sensor-replacement) is faulty or incorrectly installed. It could also be a poor electrical connection at the temperature sensor. An open circuit would...
Locate master reset button on top of motor
Hello. The only sort of reset switch equipped on a Ford Expedition would be the fuel pump inertia switch (https://www.yourmechanic.com/services/fuel-pump-shut-off-switch-replacement). The purpose of this switch is to cut off power to the fuel pump if the computer detects a harsh...
2010 Mini Cooper S - P0974 Trouble Code: Shift Solenoid A Control Circuit High
Hello - there are known issues with the valve body wearing out faster than should be normal on this transmission. I would check with a reputable transmission shop in your area for a rebuilt valve body. these are available with...
power door lock on drivers side not working
Hi there. It really depends on what is actually damaged which would determine the ballpark estimate for repairs. This type of problem can be as simple as a broken fuse or electrical relay or as complex as a damaged power...
My car started knocking in the engine and bucking when I started it today, what could that be?
You may have a misfiring coil or spark plug or a problem with the camshaft variable timing. Make sure you have a fresh oil change with correct oil viscosity and have computer scanned for codes to see what cylinders were...
Related articles
P0098 OBD-II Trouble Code: Intake Air Temperature Sensor 2 Circuit High
P0098 P0098 code definition Intake Air Temperature Sensor 2 Circuit High What the P0098 code means P0098 is the OBD-II generic code indicating the engine control module (ECM) has determined that the intake air temperature sensor 2 (IAT2) has an...
How to Reset Your Check Engine Light
There are many warning lights that can illuminate on your dashboard. They can be indications of a pending failure in any number...
P2126 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch E Circuit Range/Performance
Diagnostic Diagnostic Trouble Code (DTC): P2126 P2126 code definition Throttle/Pedal Position Sensor/Switch E Circuit Range/Performance Related Trouble Codes: P2120: Throttle/Pedal Position Sensor/Switch D Circuit P2121: Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance P2122: Throttle/Pedal Position Sensor/Switch D Circuit Low Input P2123:...
Browse other content
Cities
Maintenance