The Nissan Path

Hello,

I own a 2009 Pathfinder. I got a CEL P0181 & P0182 codes. I learned these codes are caused by a temp circuit on the fuel pump. I replaced the fuel pump (a PITA!) and the CEL turned off for a couple weeks, but now it's BACK ON with the same codes. Has anyone else ran into this issue? Need help. I thought replacing the fuel pump would have cured this problem.

It's possible that the new sensor is bad...or it was a circuit issue the whole time and never the sensor to begin with. The best thing to do would be to download a factory service manual and follow the diagnostic procedure for the codes. It's likely have you do a check of the wiring from the fuel pump connector to the ECM, checking for a shorted or open circuit. If that's good, it'll then likely tell you to do a resistance check of the sensor, itself, and give you a specified range. FSM chapters are available for free download at NissanHelp.com and full manuals at Nico Club's site.