P2A00 Diagnostic Trouble Code Discussion for December 2019
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Range / Performance
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| Help Request | Posted | |
| 2011 Buick Regal CXL 2.0L MIL Lamp on VIN: W04GW5EV2B P2A00: HO2S Circuit Closed Loop CL Performance Sensor 1. ... Light On. Scanned and got the aforementioned codes (P0030, P2A00). Scan data shows both B1S1 and B1S2 have a KOEO O2 bias voltage of 1.92 volts. Once I start the car B1S2 drops off and varies a little, but B1S1 remains fixed at 1.9ish volts. I was loo... |
December 20, 2019 | |
| 2011 Buick Regal CXL 2.0L MIL Lamp on VIN: W04GW5EV2B P2A00: HO2S Circuit Closed Loop CL Performance Sensor 1. ... Light On. Scanned and got the aforementioned codes (P0030, P2A00). Scan data shows both B1S1 and B1S2 have a KOEO O2 bias voltage of 1.92 volts. Once I start the car B1S2 drops off and varies a little, but B1S1 remains fixed at 1.9ish volts. I was loo... |
December 21, 2019 |
