engine diagnostic cost
Parts: $0 - $0. The average cost for a check engine light diagnosis is between $88 to $112. Labor costs are estimated between $88 to $112 while parts are priced between $0 to $0.Get a personalized estimate based on your location and specific car. Check Engine Light is turned on when the engine control module detects a fault in the emissions system. One or more diagnostic codes will be stored in the engine module. These codes are just one piece of information the shop will use to diagnose the problem.