How to Fix P0401 and P0402 Fault Codes on a 1999 Toyota Solara (98,000 Miles)

Model: Toyota Solara Fault Code: P0401 Posted: 2009-09-06 21:55

I need help diagnosing and fixing fault codes P0401 and P0402 on my 1999 Toyota Solara with 98,000 miles. These codes indicate insufficient and excessive exhaust gas flow, respectively. I'm looking for accurate troubleshooting steps to identify the root cause and resolve the issue safely.