Q: Check Engine Light is on - 2012 Nissan Xterra

asked by on October 19, 2016

Hello my check engine light on my 2012 Nissan Xterra came on I had it diagnosed the code was an air flow sensor I replace the sensor but the light still comes on will the computer store the code until it's reset other than that truck runs fine
My car has an automatic transmission.

Anytime a code is stored, it will stay stored and the Check Engine Light will stay on until the ECM memory is cleared. If the problem is fixed, then the light and code should not come back. Many times a code is used to replace parts when the part is not the cause of the light coming on. The code is supposed to be used to diagnose the Check Engine Light and a pinpoint test of that code will isolate the real failure.

I recommend having a certified mechanic, such as one from YourMechanic, determine exactly why the Check Engine Light is on and provide suggestions for needed repairs that get to the bottom of the real issue with your car.

Was this answer helpful?
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

Get a quote

What others are asking

security indicator light

Hello. The problem you're having could be something as simple as a key fob battery going deade. You can have your key fob battery tested at most auto parts stores. To bypass the key fob put the key fob into...

How do I fast forward and rewind with a USB device?

You can fast forward or rewind through a track on your USB device by using the audio controls. To fast forward, press and hold the Seek button for more than 0.8 seconds. To rewind, press and hold the Track button...

A loud 'pop' occurred, and car will not drive foreword or back. Did my axle break? 2012 Dodge Journey

Hello - this scenario seems to me to be a failure of a CV joint the axle, or the transmission itself. Turning and accelerating puts a great load on CV joints. If this is no longer a warranty-covered item, I...

Related articles

The Best Used Cars to Buy If You're a Gardener or Landscape Architect
Gardeners Gardeners and landscape architects need to haul around quite a bit of gear. As a gardener, chances are you will need to transport a variety of mowing equipment, along with smaller implements. You may also need to move shrubs,...
P0028 OBD-II Trouble Code: Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0028 P0028 trouble code definition Intake Valve Control Solenoid Circuit Range/Performance (Bank 2) What the P0028 code means P0028 is the OBD-II generic code indicating the engine control module (ECM) has determined that the variable valve lift for the intake...
B2110 OBD-II Trouble Code: Front Wiper Motor Relay Circuit Open
B2110 trouble code means there's an error in the front wiper motor relay circuit, caused by a faulty front wiper relay or electrical components.