Q: Q: Check engine light is on

asked by on

It was overheating, so I replaced the radiator and everything is good now except the check engine light is on. But like I said everything is good, so I was wondering if I should just reset the ECU.

My car has 144000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. When you have a mechanical component failure such as the radiator, the check engine light will typically illuminate until it is reset. However, if the check engine light came on after the service was completed, it’s possible that a sensor was not plugged in correctly or another issue exists. Trying to clear the codes is a simple quick fix, but if the check engine light comes back on, you should have your Nissan inspected for further damage. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Q: Check engine light is on

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: Various electrical problems

Each problem will need to be addressed one at a time. The easiest way to check fuses is with a test light. To check the fuses follow the following steps: Start the engine and turn everything on Ground the...

Q: Traction control light comes on occasionally in dry weather

The traction control system is dependent on wheel speed sensors at all 4 wheels. It reads the speed of each individual wheel. If it detects a wheel or wheels, spinning faster than other wheels, it can apply braking or reduce...

Q: 2017 ford explorer sport overheating while using A/C. when A/C is turned off it cools down quickly. Could this be the clutch fan?

Your engine has two electrical cooling fans and does not have a fan clutch. Check to see if the fans are coming on when you turn on the a/c? If they do not come on then i would recommend having...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...