Q: Check engine light

asked by on December 30, 2016

I had my codes read off my car. It's reading both bank 1 and 2 for the o2 sensors. What do you think it could be?

My car has 112000 miles.
My car has an automatic transmission.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car overheating.
Hello. There are many causes for a vehicle overheating. The cooling fans in the front of the vehicle move air through the radiator to cool off hot coolant being circulated out of the engine. If the fans work, it is...
Car radio stopped working
Hello. Most likely your radio has an internal problem that can only be fixed by replacing the radio entirely. There could be a problem with the wiring going to your radio, but this is rare and would probably cause the...
What all transmissions are interchangeable with my vehicle
Hello. It really depends on which rear end that you have and if the vehicle is four-wheel drive. If it is four-wheel drive then the differential gearing has to be the same in the front and the rear so you...
Does the main relay also affect the turn signals?
Hi there. It sounds like you may have blown a fuse during your repair of the main relay. Check all your fuses (https://www.yourmechanic.com/services/fuse-replacement) and relays and replace them as necessary. Then, using an electrical wiring diagram, verify that the wiring...
EPS light turns on then off & it is hesitating like if car won't turn on.
If the vehicle is not starting easily, it can be caused by a number of issues or components. Any of a dozen sensors like the coolant temperature, throttle position, or crankshaft sensors can be the cause. Low fuel pressure due...
Service park assist is displaying on dash
Hello, and thank you for writing in. Your vehicle is equipped with the Park Assist feature which will help you park in difficult situations. When the computer system detects there is an issue, the warning light illuminates to let you...
2011 Pathfinder Fluctuating idle, stalling, no power when accelerating
Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) is a small valve on the engine's intake system that reads the...
I'm changing my coolant on my 2012 Ford Fiesta. How should I go about this? How do I flush the system with water?
Hi there. We typically don't offer step-by-step instructions for services we offer (https://www.yourmechanic.com/services/radiator-flush). However, I would recommend purchasing a service and repair manual for your 2012 Ford Fiesta and completing a full cooling system flush. The process for bleeding the...
Car stopped while driving an steering wheel locked an engine light on
Hi there. When a car sits for an extended period of time, several issues can occur that cause the vehicle to not start. Sometimes it's an ignition system problem. with relays or ignition system components being damaged or worn out....

Related articles

A Buyer’s Guide to the 2007 Ford Crown Victoria
This This enduring Ford classic enjoyed a nearly two-decade run before being discontinued from the retail market with the 2007 model-year being the last. Ever-popular with law enforcement (for whom models continued in production through 2011), and senior citizens, the...
Mercury Certified Pre-Owned (CPO) Car Program
Drivers Drivers who are shopping around for a used Mercury vehicle may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on to...
Understanding the Mercury Intelligent Oil Life Monitor and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Mercury Intelligent Oil Life Monitor indicates when and what service your car needs.