Fixing A Problem

So if you have access to a scan tool of some sort, fixing a late-model car should be easy, right? Not necessarily, says Westech Performance Group's Ernie Mana. "Just because the computer is giving you a code for a certain sensor, don't automatically assume that the sensor is bad."

Stein agreed, saying, "Even with all this expensive computer equipment, I still have to perform all the basic checks."

So what do you do if the check engine light is on in your car? Mana described his process. "First, I'll erase the codes and start the car again."

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