Codes PO 115 and PO 400

Asked by Jan 11, 2014 at 03:55 PM about the 1999 Mazda Millenia 4 Dr STD Sedan

Question type: Maintenance & Repair

1 Answer

19,915

The P0400 has to do with a fault in the EGR (Exhaust Gas recirculation) system. The possible cause is leak or blockage, wiring, EGR Valve or EGR solenoid or the ECM. P0115 has to do with the ECT (Engine coolant sensor) possible causes for this fault is wiring or the Engine coolant sensor itself or the ECM

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

  • Codes PO 115 and PO 400 1 answer

    1999 Mazda Millenia 4 Dr STD Sedan

    -

    Maintenance & Repair

  • i have a check ingine light on and the codes read, p0170 fuel trim bank missfire, cylindermissfire 3 answers

    i have a check engine light on and i got the codes and they read p0170 fuel trimbank 1 missfire, cylinder missfire, what does that mean how would i be able to fix the problem? and when i go to start m...

    1999 Mazda Millenia 4 Dr S Supercharged Sedan

    -

    Maintenance & Repair

  • 2001 millenia S 2.3L will idle only when cold and won't drive at all 1 answer

    I have a 2001 millenia s (2.3). One night it started missfiring and check engine light blinking under light load but I was able to make it home (30 minute drive). Next day I checked code and it was ...

    2001 Mazda Millenia 4 Dr S Supercharged Sedan

    -

    Maintenance & Repair

  • Headlights and fog 2 answers

    My vehicle headlights do not turn on when twisting switch. I can pull the lever back and make the brights come on for flashing. Turn signals work too. Is there any solution for this problem? Also ...

    1999 Mazda Millenia 4 Dr STD Sedan

    -

    Maintenance & Repair

  • car stalled and will not start 3 answers

    Filled up with gas drove about 20 miles. Stopped at stop sign and went to turn and nothing no power car died like key was turned off! Any suggestions?

    2001 Mazda Millenia 4 Dr Premium Sedan

    -

    Maintenance & Repair

Search Mazda Millenia Questions

Mazda Millenia Experts

#1 Steven Cisneros
Steven Cisneros
Reputation 730
#2 Keith12345
Keith12345
Reputation 420
#3 Tom Demyan
Tom Demyan
Reputation 230
View All

Related Models For Sale

Used Nissan Maxima
337 Great Deals out of 24,259 listings starting at $1,999
Used Honda Accord
1,044 Great Deals out of 67,784 listings starting at $1,000
Used Acura TL
182 Great Deals out of 5,417 listings starting at $1,999
Used Toyota Corolla
971 Great Deals out of 69,387 listings starting at $1,800
Used Chevrolet Malibu
1,157 Great Deals out of 79,586 listings starting at $2,500
Used Mazda Protege
223 listings
Used Mazda 626
208 listings
Used Honda Civic
849 Great Deals out of 84,347 listings starting at $750
Used Ford Mustang
679 Great Deals out of 44,705 listings starting at $1,500
Used Chevrolet Camaro
351 Great Deals out of 31,326 listings starting at $2,200
Used Nissan Pathfinder
330 Great Deals out of 22,241 listings starting at $2,500
Used Acura RL
22 Great Deals out of 678 listings starting at $2,000
Used Chevrolet Impala
575 Great Deals out of 35,566 listings starting at $899

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.