I would change them both to duralast or AC delco but i would keep it same brand . of cause sensors can be defective as well. Aurora doesnt like a lot of generic sensors and of cause check the connector.
1998GX 168,000 Intrigue-RIP total loss. 1999 Intrigue GLS 215,000 mil-Trade it in for Aurora 2001 Aurora 4.0 2nd owner! miles 22,000~170,700- Sold 2003 Aurora 4.0 3rd Owner! miles 130k 2018 Volvo s90 Inscription 18,000 miles