CEL Light, Got PO 171 System Lean Bank 1 on 2002 Toyota Camry

Car starts and runs as usual. Cleaned MAF. CEL has returned. Any suggestions for next move. Thanks.

by in Van Nuys, CA on November 30, 2012
1 answer
ANSWER by , November 30, 2012
Check for vacuum leak, lazy 02 sensor(1). Replace fuel filter. Check MAF/ 02 data with a real scanner. Any exhaust leaks around the front 02 sens?