P1133 Diagnostic Trouble Code Discussion for March 2018
Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching
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| Help Request | Posted | |
| 1997 Chevrolet S10 LS 4.3L No Start VIN: 1GCCS19X5V P1133: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching. Vehicle came in with complaint hard starting cold. I measured fuel pressure and found fuel pump relay intermittently engages, when it does it will reach 60 PSI and run with 53 PSI. I back probed fuel pump relay feed at computer and it will engage 4 out of ... |
March 15, 2018 |
