× 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

P0161 Diagnostic Trouble Code Discussion for December 2005

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Performance


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 P0161
Help Request Posted
1999 Mercedes-Benz ML430 4.3L MIL Lamp on VIN: AJGAB72E7X
P0161: Bank 2 Sensor 2 O2 heater circuit. Hi Mercedes Gurus, This car came in with codes P0173, P0156 & P0170. We replaced both rear O2 sensors and the Mass Air Sensor and now we get the P141/161 codes during warm up or sustained idling. Looking into the situation further we find that the ECM is ...
December 19, 2005