Ecu problem on my 1997 toyota corolla

How do you reset the ECU on a Toyota Corolla?

Answer provided by

  1. Park your car.
  2. Open your hood.
  3. Disconnect the negative terminal from your car battery.
  4. Leave the battery disconnected for about 15 minutes.
  5. Reconnect the battery, turn on your car, and make sure the engine light is off.

Why did my check engine light come on in my Toyota Corolla?

Toyota Corolla Check Engine Light Flashing

Other common reasons for a Check Engine Light are dirty mass airflow sensor, faulty emissions control part, a malfunction with the fuel injection system, damaged oxygen sensor, faulty head gasket, or defective spark plugs to name a few.

Do Toyota Corolla have problems?

Throughout the lifespan of the Toyota Corolla, one of the most commonly reported problems is excessive oil usage in the engine. This was more common in the 2000, 2001, 2002, and 2009 model years, though it did appear in other years such as 2014. Meanwhile, transmission problems plagued the models.

How do you turn off the check engine light on a Toyota Corolla?

How to Turn Off Maintenance Light on a Toyota Corolla

  1. Insert the keys in your Corolla. …
  2. Press and hold the trip reset button near the odometer until “Trip A” appears on the central screen.
  3. Turn the key back to “Off.”
  4. While pressing the button to reset the trip, turn the key back to the “On” position.

Does disconnecting battery reset ECU?

A. It depends on the car’s age and type of ECU used. On some older cars, disconnecting the battery will reset the system but in most new cars it does nothing, except potentially reset the clock and radio station presets.

Should I reset my ECU?

Resetting your ECU is a popular myth. In reality, resetting your engine control unit (ECU) after modifying your engine** isn’t necessary. However, resetting your ECU can help you fix a faulty check engine light or restore your car to factory setting.

What is the most common reason for check engine light?

The top 25 repairs account for 62% of all check engine repairs in the United States. Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light.

What does a solid check engine light mean?

A solid Check Engine Light can mean something like a loose gas cap, or it can indicate a more in-depth problem like a fuel, timing, or transmission issue. Get your car diagnosed, although the urgency isn’t the same as if the light was flashing at you.

Can I drive with check engine light on?

If the check engine light turns on and is steady, not flashing, you can keep driving as long as your vehicle isn’t performing out of the ordinary. A steady light is your car’s way of telling you your car is in need of service.

What causes Toyota engine light?

Further easy reasons for a Check Engine Light are a malfunction with the fuel injection system, faulty emissions control part, faulty head gasket, damaged oxygen sensor, or defective spark plugs to name a few.

What does Toyota check engine light mean?

It could be a misfiring engine, a broken oxygen sensor or simply a loose gas cap. When you see the check engine light it doesn’t necessarily mean you need to pull the car over to the side of the road and call a tow truck. It does mean you should get the car checked out as soon as possible.

How do I clear my check engine light without a scanner?

To reset a check engine light without a scanner, disconnect the negative battery cable and wait a few moments. This will reset the diagnostic system in your vehicle, and if the underlying issue has indeed been resolved, the light should go off immediately.

How do you reset the check engine light on a Toyota?

Turning the Ignition On and Off

The on-off method is the equivalent fix for a vehicle’s check engine light. It forces the computer to refresh its saved state through a reboot. Simply place your key into the ignition and turn it on for 1-2 seconds, then turn it off for 1-2 seconds. Repeat this step three or four times.

Can I reset the check engine light myself?

You can reset the check engine light without disconnecting the battery by using an OBD2 scanner. If you drive long enough after fixing the problem, most car models’ check engine light will go away by itself.

What fuse controls check engine light?

What Fuse Do I Need To Reset The Check Engine Light? Pull the maxi-fuse #11 on top of the fuse panel next to the brake booster from the driver’s side, and then pull it 2Amp up from the top 20 Amp on the left.

Can a blown fuse cause the engine light to come on?

It is not uncommon for a blown fuse to cause a minor car electrical problem, such as backup lights not working, not being able to use your radio, or not being able to turn on your turn signal.

Where is the engine fuse located?

Where Is The Engine Fuse? The fuse box of your vehicle must be located. It is normally found inside the engine compartment, along the driver’s side, on the driver’s foot well, or in the glove compartment of a vehicle.