p0171 toyota camry 2003
5

Asked by GuruB4BQ5 Feb 10, 2020 at 12:59 PM about the 2003 Toyota Camry LE

Question type: Maintenance & Repair

I have a 2003 Toyota Camry 2.4 with over 225,000 miles.  I have a p0171
check engine light code. The upstream and downstream O2 sensors have
been replaced.  I clean the mass air flow tube, and soon I will change the mass
airflow sensor. What other areas should I look at?

1 Answer
21,930

Tony answered 4 years ago

Suggest you check for VACUUM leaks. Special equipment is recommended to track down a vacuum leak. What you CAN do is check all vacuum hoses For cracks and placement. On the underside of the hood...you should see a diagram for vacuum connections. Get back with results.

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