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HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 5704
Experience:  25 years Auto experience, Ford ,GM, Chrysler, Asian & European
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Obd codes P0174 - P0171 - P0455 - P0402-P0133 and P0401....

Customer Question

obd codes P0174 - P0171 - P0455 - P0402-P0133 and P0401....
Where do I start and how do I try to solve this?
Its a 1999 E-150 econo
Submitted: 1 year ago.
Category: Ford
Expert:  HDGENE replied 1 year ago.

Helo the 171 and 174 are lean odes, this can be caused by a vacuum leak, loss of fuel pressure or issue with the mass airflow sensor. Inspect for vacuum leaks. Which the P0133 also indicates a possible vacuum leak. Check the pcv valve and hose at the back of the intake for being collapsed and sucking in air. The P0402 & P0401 are an EGR valve code. This is probably due to a failed DPFE sensor for the egr valve which is very common.

Expert:  HDGENE replied 1 year ago.

Do you need more help with this concern?

Expert:  HDGENE replied 1 year ago.

Hello, do you need more help with this concern?

Customer: replied 1 year ago.
Have another project that I am working on and will get to this next week.... Thanks.
Expert:  HDGENE replied 1 year ago.

No problem, if you need more help just let me know. If I was helpful, please leave a positive rating.

Expert:  HDGENE replied 1 year ago.

Hello, do you need more help with this concern?