Q: Check Engine Light is on - 2012 Nissan Xterra

asked by on

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
  1. Home
  2. Questions
  3. Check Engine Light is on - 2012 Nissan Xterra

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

Q: VSC and Traction control lights on after wheel alignment. Unable to reset/recalibrate

A faulted sensor like the steering angle sensor can cause these systems to malfunction. A steering angle reset is required with an alignment on these vehicles and involves a procedure that includes disconnecting the battery. If you'd like a fresh...

Q: Brake pedal sinks

This is a sign of a potential vacuum leak in the brake booster. When there is not enough vacuum in the brake booster, this will cause a hydraulic pressure drop resulting in a soft brake pedal. If you'd like, a...

Q: Oil dipstick is stuck

The oil dipstick has small rivets in it toward the bottom which can sometimes make it difficult to get out depending on the angle or curvature of the oil dipstick tube that leads down to the oil pan. Sometimes wiggling...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...