P062D and P0451 Fault Codes on Scion FR-S Turbo Model - No Pedal Response After Header, Turbo, Intercooler and O2 Sensor Replacement
I recently replaced the headers, turbocharger, intercooler, and oxygen sensor on my Scion FR-S. Since the work was completed, the car starts successfully but exhibits no pedal response. The engine tends to idle between 1,000 and 2,000 RPM on its own, indicating a potential issue with throttle control or engine management system. I am currently experiencing P062D and P0450 diagnostic trouble codes, which may be related to the modifications performed. Seeking advice on how to diagnose and resolve these issues while maintaining proper turbo performance and drivability.