Join Now
International Automotive Technicians Network

P1133 Diagnostic Trouble Code Discussion for April 2012

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching


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 P1133
Help Request Posted
2002 Pontiac Firebird 3.8L MIL Lamp on VIN: 1GC2MERUS2
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. vehicle came from another shop, with both not enough cross counts codes, bank 1 and bank 2. O2 sensors are responding fast based on testing, MAF has been swapped with known goog one, no change, im leaning twards not enough fuel volumen at cruise, fuel pressure...
April 17, 2012
2002 Pontiac Firebird 3.8L MIL Lamp on VIN: 1GC2MERUS2
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. vehicle came from another shop, with both not enough cross counts codes, bank 1 and bank 2. O2 sensors are responding fast based on testing, MAF has been swapped with known goog one, no change, im leaning twards not enough fuel volumen at cruise, fuel pressure...
April 17, 2012