Mass air flow sensor problems symptoms toyota corolla

Testing to see if the mass air flow (MAF) sensor on your Toyota L equipped Corolla is bad (or not) isn't hard.Mass Air Flow (MAF) Sensor. This test is almost but not exactly the same for all types of MAF Sensors. There are a number of things on a car that are built to regulate the amount of air and fuel that get mixed. The mass airflow sensor is one of the most important of these sensors due to the job that it performs. The problem could also be caused by a faulty oxygen sensor or a vacuum leak.

The corolla has two oxygen sensors.

Cleaning May Correct Faulty Mass Air Flow Sensor on Toyota Corolla

If the engine is getting too little fuel it causes a lean condition, which raises combustion temperatures an in turn, raises exhaust temperatures. Since converters operate properly only between certain temperatures (900-400° F), extreme temperatures lower the efficiency of the catalyst and can trigger the P04DTC.

NEW part fixed the problem, and I am so much NOT in the dog house! The family is thrilled!Hi, I have a 20Chevy cobalt I was having the same problem with the car stalling or wanting to at first, it was worst in the colder weather. Corolla with the same problem. Toyota wanted over $4to do the repair.