2014 Chevy Sonic 1.8 (non-turbo) Codes: P0101 MAF Sensor Flow, P0171 Bank 1 Lean Symptoms: Surging at idle, poor power, MIL (Malfunction Indicator Lamp) on We had a fleet-owned 2014 Chevy Sonic 1.8 come into the shop the other day for an oil change and complaint of a MIL (Malfunction Indicator Light or check engine … Continue reading 2014 Chevy Sonic Intake Boot