One problem related to service engine light on has been reported for the 2014 Buick Encore. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Buick Encore based on all problems reported for the 2014 Encore.
Service engine light (po420 code) came on and vehicle begin to vibrate at start up especially. Temp gauge showed overheating with no signs of overheating. Thermostat housing replaced. Service engine light came on again after repair. Mechanic shop replaced converter that was faulty (po420 code) a week later. Service engine light came on (po 420 code) (171 code) mechanic shop replaced catalytic converter, r&r front. , left shop that day engine light came on again. Replace catalytic sensor, next day service engine light came on again. Replace oxygen regulator part and valve coil, (same codes everytime), the service engine light came on again 2 days later. I have spent over $1300. 00 and still have the engine service light on. I have been driving vehicle during this time. I have invoices for the repairs.