P2059 Buick O2 Sensor Signal Circuit Signal Voltage Too High
Possible causes
– Faulty O2 Sensor
– O2 Sensor harness open or shorted
– O2 Sensor circuit poor electrical connection
– O2 Sensor harness open or shorted
– O2 Sensor circuit poor electrical connection
What about the obd code?
The ECM has detected a plausibility fault with the O2 sensor signal
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