po172 code for chevy aveo
P0172: An oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). Bank 1 is the side of the engine that has cylinder #1. One or more of the following has happened: The MAF (Mass Air Flow) Sensor is dirty or faulty. There could be a vacuum leak. There could be a fuel pressure or delivery problem.
Search Chevrolet Aveo Questions
Chevrolet Aveo Experts