Anybody has a problem would the code P 171 and the 174 on Toyota Sienna 2004 please help

Question

My check engine light is on it gives me a code P 171 and 174 exhaust has a leak I fixed it but it's still is showing me the check engine light anybody had a problem with this before

Answer 1

Lean bank codes on both side, try doing a MAF , and check for any vacuum leaks, at the MAF airflow duct check for any cracks or tear that would set a lean condition.