2004 PT Cruiser P0129 Fault Code: Diagnosis and Resolution Steps

My 2004 PT Cruiser has been experiencing recurring check engine light issues, with the most recent fault code being P0129. Previously, I had encountered codes P032, P038, and P0301, along with a leaking oil pressure sensor. I have already replaced both oxygen sensors and the oil pressure sensor. The vehicle starts normally but runs roughly after a short period before stalling. After resetting the air cleaner box (which was slightly misaligned), I also replaced the MAP sensor and reset the Powertrain Control Module (PCM). However, the car still stalls after running for a while, and the P0129 code reappears. I have checked all hoses and connections and do not observe any loose or damaged lines. The issue persists despite these repairs. Any insights into diagnosing or resolving this specific P0129 code on a 2004 PT Cruiser would be greatly appreciated.