Some think that when the check engine light comes on, the engine computer tells the technician exactly what the problem is. The reality is much different. Your Reading technician at H & B Napa Auto Care will determine the underlying problem that's causing the symptom. Others are more involved and difficult. Of course, we at H & B Napa Auto Care want to figure out what's wrong with your vehicle and get you back on the road as quickly as possible. Give us a call today!