× 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

P0157 Diagnostic Trouble Code Discussion for March 2009

Heated Oxygen Sensor (Bank 2 Sensor 2) 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 P0157
Help Request Posted
1998 GMC C3500 Sierra SL 7.4L Excessive Emissions, MIL Lamp on VIN: 1GDKC34J8W
P0157: Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage. this truck is working me over it sets many o2 codes but will set p0137 on decel from interstate checked power and grounds and all seems well. bank one sensor 1 will drop to 0 mv on decel from highway speeds plese help any advise would be great
March 04, 2009
2003 Chevrolet Tahoe LT 5.3L Cuts out, Misfire, MIL Lamp on VIN: 1GNEK13Z43
P0157: Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage. This Tahoe came in and the customer ststed that the check engine light comes on while driving, engine misfires and check engine light flashes. No big deal, should be an easy misfire correction. I took the vehicle out and sure enough it happened. What I noticed...
March 11, 2009
2004 Dodge Ram 1500 ST 5.7L MIL Lamp on
P0157: o2 rear catalyst 22 low volts. ram hemi 5.7 liter. came in with p0157. monitored pidata stream...found#22 cat monitor and #21 monitor start out at 1.27 volts cold. as monitors warm up,the #21 will hang at about .7 to .8 volts which is normal. the #22 monitor will also start out normally...t...
March 25, 2009