What is chevrolet aveo code 16?

The Chevrolet Aveo with a code 16 fault code will be listed as the ECM (engine control module) monitors system voltage internally. If the system voltage becomes too high or lows the electrical devices on the car may not work properly. Some of the symptoms of the code are a charging system warning light on, voltage gauge reading is low and the engine runs poorly or stalls due to low voltage. Some of the common causes are a failed alternator or a bad charging system. You should get a test performed to check out the charging system and see if its working properly and then replace the alternator depending on the test results.