Engine code p0171 and p0174
Engine codes: p0171 and p0174
The car is not throwing any other codes.
Hi, I am searching for assistance and advise from anyone that has had the same problem. I have a 2008 XLR, with 39000 miles. The engine light came on yesterday. Took it into the dealer today and the dealer said it showed code p0171 and p0174. They told me it was caused by my new Corsa Exhaust. I reminded them that I had the car in the shop in November 2011 for the same thing, same codes and that was before I changed the exhaust system. They than took the car for a test drive and tried to duplicate the problem. They said that the condition occured at 70 mph @ 1700 rpm and cound not fail any components. Mapp system checks OK, road tested and tried to recreate the failure and could not. The codes were cleared and sent me on my way. They said they would see how long it takes to happen again. They told me the same thing in November 2011. Since than I have driven the car 500 miles. The cars does not show any other problems or symtoms, runs great. Does anyone have any suggestions. Please help!