× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0051 Diagnostic Trouble Code Discussion for September 2007

Air Fuel Sensor (Bank 2 Sensor 1) Heater Control Circuit Low Voltage

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0051
Help Request Posted
2002 Nissan Sentra CA 1.8L MIL Lamp on VIN: 3N1CB51D82
P0051: o2 bank 2 sensor 1 heater circuit low. 0 2 heater code returns after drive cycle both rear o2s read 300mv even unhooked taking reading from ecm side.heaters are turning on,power and grounds check ok.temperarly swapped ecm and rear o2s read 290mv.cant find criteria for code setting.the ecm i tryed w...
September 27, 2007