Car Fixed
GarageProLogin
2012
toyota corolla4 views

Check Engine Light On

Expert diagnosis and repair solutions for 2012 toyota corolla Check Engine Light On. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
easy$10-$20
Tighten or replace the gas cap to resolve Check Engine Light issues caused by a loose or faulty cap.
Source: https://www.toyotanation.com/threads/2012-corolla-check-engine-light-and-trac-control-light-on.1703654/

Repair Steps:

  1. Inspect the gas cap for any visible damage or wear.
  2. Tighten the gas cap securely.
  3. If the issue persists, replace the gas cap with a new one.
2
medium$150-$300
Replace the oxygen sensor to address Check Engine Light triggered by sensor failure.
Source: https://www.toyotaofgreenville.com/2012-toyota-corolla-check-engine-light.htm

Repair Steps:

  1. Use an OBD-II scanner to confirm the oxygen sensor fault code.
  2. Locate the faulty oxygen sensor in the exhaust system.
  3. Disconnect the electrical connector and remove the old sensor.
  4. Install the new oxygen sensor and reconnect the electrical connector.
3
hard$500-$2,000
Inspect and potentially replace the catalytic converter if it's causing the Check Engine Light.
Source: https://www.autonationtoyotaarapahoe.com/service/check-engine-light.htm

Repair Steps:

  1. Verify the catalytic converter fault code using an OBD-II scanner.
  2. Inspect the catalytic converter for any signs of damage or clogging.
  3. If necessary, remove the old catalytic converter and replace it with a new one.
  4. Ensure all connections are secure and clear any fault codes from the vehicle's computer.
4
mediumFree (covered under recall)
Address airbag inflator module recall to ensure vehicle safety and proper diagnostic function.
Source: https://www.nhtsa.gov/recalls

Repair Steps:

  1. Contact a Toyota dealership to verify if your vehicle is affected by the recall.
  2. Schedule an appointment to have the airbag inflator module inspected and replaced if necessary.
  3. Ensure the dealership performs the recall service free of charge.

Get a Personalized Diagnosis

Get AI-powered repair suggestions specific to your vehicle's symptoms and history.

Start Free Diagnosis →
Browse more common problems