2017-10-10
Illuminated Check Engine Light
Decreased fuel efficiency
Engine misfires or hesitates during acceleration
Rough idle or stalling
Increased emissions output
Faulty oxygen sensor
Damaged wiring or connectors in the oxygen sensor heater circuit
Failed PCM (Powertrain Control Module)
Possible
Heated Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy
Replace faulty oxygen sensor
Repair or replace damaged wiring or connectors in the oxygen sensor heater circuit
Replace failed PCM