Join Now
International Automotive Technicians Network

P1133 Diagnostic Trouble Code Discussion for September 2009

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
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: IGNDS13S34
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... I never even heard before!!! The fuel pressure is steady 57 @ idle, and 50@ cruise!!! The fuel trim goes very hi on cruise (20 st and 27 lt), and sets codes for rich and lean system. Also sets code p1133 O2 not switching...
September 18, 2009
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: IGNDS13S34
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... I never even heard before!!! The fuel pressure is steady 57 @ idle, and 50@ cruise!!! The fuel trim goes very hi on cruise (20 st and 27 lt), and sets codes for rich and lean system. Also sets code p1133 O2 not switching...
September 21, 2009
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: IGNDS13S34
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... I never even heard before!!! The fuel pressure is steady 57 @ idle, and 50@ cruise!!! The fuel trim goes very hi on cruise (20 st and 27 lt), and sets codes for rich and lean system. Also sets code p1133 O2 not switching...
September 18, 2009
2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: IGNDS13S34
P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... I never even heard before!!! The fuel pressure is steady 57 @ idle, and 50@ cruise!!! The fuel trim goes very hi on cruise (20 st and 27 lt), and sets codes for rich and lean system. Also sets code p1133 O2 not switching...
September 21, 2009