123 fix, P0171, P0174 all modern Jaguars. Jaguar Forums Jaguar Enthusiasts Forum
123 fix, P0171, P0174 all modern Jaguars. Jaguar Forums Jaguar Enthusiasts Forum . Diagnosis of p0171 or p0174 lean code / codes. P0171 and p0174 are the error codes that show up during lean situations. Troubleshooting P0171, P0174 trouble codes (how to read and interpret fuel trim data) YouTube from www.youtube.com P0171 code triggers when a lean condition occurs in cylinder bank 1, and a lean condition in cylinder. 2000 camaro z28 (sold) codes p0171 and p0174 i have these codes which mean i am running lean on bank 1 and bank 2. These codes commonly occur on many ford vehicles, and are set when the powertrain control.