Join Now
International Automotive Technicians Network

P0156 Diagnostic Trouble Code Discussion for September 2013

Heated Oxygen Sensor (Bank 2 Sensor 2) Closed Loop Fuel Control


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 P0156
Help Request Posted
1999 Mercedes-Benz CLK430 4.3L No Start, Poor Idle Quality VIN: WDBLJ70G6X
P0156: g3/5 left o2 sensor after cat. This car will crank for a long time before starting cold. When it does finally start, it will stumble for 20 seconds or so, then runs smooth. If you put in gear it has no power cold. It runs perfect warm, with fuel trim around -5% after driving. Check engine l...
September 11, 2013
1999 Mercedes-Benz CLK430 4.3L No Start, Poor Idle Quality VIN: WDBLJ70G6X
P0156: g3/5 left o2 sensor after cat. This car will crank for a long time before starting cold. When it does finally start, it will stumble for 20 seconds or so, then runs smooth. If you put in gear it has no power cold. It runs perfect warm, with fuel trim around -5% after driving. Check engine l...
September 11, 2013