2001 Nissan Pathfinder Q&A
2001 Nissan Pathfinder Question: P0171 and P0174 Codes
I had the service engine light come on and took it to the dealership a month back. They said it was a P0174 issue and would cost be 800$ to fix. I indicated that I would like to ensure that was a "real" issue and would come back later. As I drove out of the lot, the service engine light went off!! Great and just what I had been reading on the websites. Now,a month later the service engine light came back on, but there also seems to be a pinging sound (rattle). so, tool the car back again into the dealership and they say P0171 and P0174 codes both show up and it will be $900 to fix!! Really frustrated and confused ... Any help appreciated. - Visitor
Here is some info on these codes: http://repairpal.com/OBD-II-Code-P0171-and-P0174 What is the shop recommending for repairs? - Bret Bodas
You don't want to hear my story. I got the same codes, ignored them for a while. I didn't want to pay $ 600 dollars for a MAF sensor. Found them online for $100. Changed it got new codes. Oxygen sensors, cat converters. Changed the sensor, went away. Converter codes stayed, dealer said the converters were bad ($3200 repair) Bought them online for $450, had the dealer install them for $500. Very tricky to install. - Visitor
Service engine soon light on and OBD II codes P0171 & P1140. "Fuel system lean on bank 1" along with "mass or volume air flow circuit range/performance problem. This 2001 Pathfinder has 135000 m...