P2417 Buick Oxygen (O2) Sensor Signals Swapped (Bank 2 – Sensor 2) / (Bank 2 – Sensor 3)

P2418 Buick EVAP System Valve Control Circuit Open

Possible causes
– Canister Purge Valve harness is open or shorted
– Canister Purge Valve circuit poor electrical connection
– Faulty Canister Purge Valve
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
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