Hi guys, had my XJ parked at the airport for a week while out on a trip. On the ride home, check engine light came on for Code P0121. Before I go firing parts at this, anyone have any advice? It’s a 2000 Xj with approx 145k on it. I replaced the TPS last year thinking it was causing another issue, but it did not help. Jeep ran fine on the highway and through town. Thanks!

Replaced TPS with O’Rileys brand. Reset ecm, check engine light still on for TPS. Plugs, o2 sensor, battery terminals are less than a year old. Should I buy a MOPAR sensor? Jeep drives fine, just has the light on