2007 Saturn Ion P2430 P2431 P0411 Fault Codes: Diagnosis and Solutions
I'm encountering several powertrain-related fault codes on my 2007 Saturn Ion: P2430, P2431, and P0411. These codes are not listed in my owner's manual. Specifically, P0411 indicates a 'Secondary Air Injection System Incorrect Flow Detected.' I'm unfamiliar with this issue and would appreciate any guidance on how to diagnose or fix it. Are there common causes or troubleshooting steps for these codes? Any insights from experienced owners or mechanics would be greatly appreciated. Thanks, Jeff
P2430 refers to the Secondary Air Injection System Airflow/Pressure Sensor Circuit in Bank 1. P2431 indicates a range or performance issue with the same sensor circuit in Bank 1. The most common resolution is replacing the airflow/pressure sensor, as it may be faulty or contaminated. Ensure proper electrical connections and clean the sensor housing before replacement to confirm the fix.