P1133 Diagnostic Trouble Code Discussion for September 2009
Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching
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| 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 |
