CODES P0141 AND PO401, ANY PINPOINT TESTS I CAN PERFORM TO FIND OUT WHAT NEEDS REPAIRING?
Dec 10, 2007 at 8:43 AM
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MERLIN2021
✓Experienced Mechanic
17,250 POSTS
P0141= heated 02 sensor lean bank 1 sesnsor 2
P0401= Insufficient EGR flow, check your EGR valve, and under it. Or Plugged with carbon, clean the port under it with a piece of wire coathanger, reset the code, if it comes on again, replace the EGR psition sesnor.
Dec 10, 2007 at 8:55 AM
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