P2271 Diagnostic Trouble Code Discussion for September 2021
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Rich
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| Help Request | Posted | |
| 2013 Chevrolet Malibu LS 2.5L MIL Lamp on VIN: 1G11B5SA9D P2271: o2 sensor stuck rich. smoked checked found pcv hose split, i felt like that was it. did not fix vehicle. idle speed 800 rpms, checked fuel sample appears normal, fuel pressure with gauge at idle 48 psi, scanner reads 48.7 psi, rail pressure 435 psi, alcohol content zero percent... |
September 24, 2021 |
