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Hello, my name is***** code usually means the Air assisted control valve has failed. At the Air Assisted Control Valve (AACV), verify there is 12 V on the Green/Orange wire. Verify good ground on the Brown/Black wire. If possible, activate valve with scan tool. When doing this, idle RPM should jump at least 300 RPM. If it does not, replace the AACV. Let me know how it goes or if you have more questions, thanks.