Check Engine Light PC Code
Thread Starter
5th Gear
Joined: Jun 2006
Posts: 5
Likes: 0
Check Engine Light PC Code
I have a 1998 Corvette with 22K miles. I recently installed Mid-America's Complete Ram Air Intake System with the high flow mass air sensor. Soon afterwards I began to get an intermittant check engine light. I ran the PC Codes and got P0171/2, "fuel trim system lean." The light will come on for a couple of days then go off for a couple of days. Is the computer confused by the increased volume of air? Can someone help me understand what's going on? Any help would be very much appreciated.
Melting Slicks
Joined: Mar 2005
Posts: 2,252
Likes: 181
From: NE OH
A lean code means your car is running leaner than the PCM can compensate for, it could also mean that you have an air leak somewhere. If I were a betting man, I'd be betting on the latter. Double-check all of your airbridge connections and make sure you don't have an air leak.
