Check engine light is on, EGR trouble codes

2002 MAZDA MILLENIA
118,000 MILES • 2.5L • 6 CYL • 2WD • AUTOMATIC
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RICHARD BROOKS
  • MEMBER
  • 3 POSTS
EGR replaced, EGR solenoid/motor also, check engine light remains,
Oct 3, 2018 at 1:32 PM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good afternoon.

Lets start with the code as there are many EGR codes?

Roy
Oct 3, 2018 at 1:58 PM
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RICHARD BROOKS
  • MEMBER
  • 3 POSTS
Code po400 fault in flow of EGR for predetermined period of time.
Oct 4, 2018 at 1:06 PM
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RICHARD BROOKS
  • MEMBER
  • 3 POSTS
Code PO400.
Oct 4, 2018 at 1:10 PM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
I attached the flow chart for the code. You will need a scan tool to perform this to determine the failure.

Roy
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Oct 4, 2018 at 2:00 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.