P CODES (POWERTRAIN) P0500 - P0599 P0522 Questions

I Have The Same Problem As Bernatd2k10 In Your Article By The Same Name As My Subject (at Https://www.2carpros.com/questions/saturn-sl2-1999...

My Car Has Detected, Po522 Is This A Serious Problem. Thanks

Is This The One On Front Of The Head, Or The One In Back Or The One By Filter Housing? Replaced The One On Front Of Head Made No Difference.

I Have Trouble Codes In The Order Listed. P0641 P0107 P0452 P0522 P2228 Is There Any Possible Way I Could Be Helped Through This...