P1133 Diagnostic Trouble Code Discussion for December 2010
Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching
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| Help Request | Posted | |
| 2004 GMC Envoy SLE 4.2L MIL Lamp on VIN: 1GKDT13S04 P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. ... (which belongs to the office manager) has a problem where the PCM sets P1133 about twice a month or less. The problem is intermittent and always seems to run fine. However, the lights get rythmically dim then bright for 10 secs or so on initial very cold o... |
December 18, 2010 |
