I just need to know were to begin. I've heard check the DPFE, evap. purge flow sensor, egr valve, vacuum lines, intake gaskets, MAF and 02 sensors. Has anyone had a code reading like this one?
Joined: Tue May 02, 2006 9:31 pm Posts: 184 Location: California
What size engine? For the code P0401 replace the dpfe sensor. Also check the lines going to it for deterioration. For code P1443 check the evap line and components for damage. Has a tune up ever been done? Codes P0302, P0304 and P0306 might indicate that it needs a tune up. For the code P0171, P0172 check the MAF sensor for contamination. Make sure there are not any vacuum or air leaks. P0153 might be related to the P0171, P0172 codes. Check for any exhaust leaks. Make sure the O2 sensor and connector is not damaged. The code is for the O2 sensor on the drivers side in front of the cat.
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