How do I fix this check engine code?

Asked by mackenzie Apr 08, 2020 at 12:20 PM about the 2005 Ford Mustang Coupe RWD

Question type: Maintenance & Repair

Hi so I have a 2005 Ford Mustang. The check
engine light was on showing I needed a new
egr valve. So I replaced it. Now the check
engine light is showing for code P0403, can
someone tell me what might be causing it and
how can I go about fixing it?

1 Answer
2,230

RickMN answered 4 years ago

There is no such code that says, "replace EGR valve." Just because EGR is mentioned in the code doesn't mean the valve is bad. For example, P0403 Exhaust Gas Recirculation Circuit Malfunction means there's a circuit problem. So you should get a shop manual and see what the specs are for the current and readings for the EGR circuit and then test at the connector to see if the problem is a wiring harness issue, bad connection, open, etc.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • How do I fix this check engine code? 1 Answer

    Hi so I have a 2005 Ford Mustang. The check engine light was on showing I needed a new egr valve. So I replaced it. Now the check engine light is showing for code P0403, can someone tell me what m...

    2005 Ford Mustang Coupe RWD

    -

    Maintenance & Repair

  • How to fix error code P2122 for Ford Mustang with engine 3.7L of year 2014 3 Answers

    Make: Ford Model: Mustang Engine: 3.7 Year: 2014 Error codes: P2122 Knowledge level: I know little about cars Help needed: Please help me find out what is going on and how to fix it.

    2014 Ford Mustang

    -

    Maintenance & Repair

  • p0605 OBDII error code 1 Answer

    How do I fix this error

    2007 Ford Mustang V6 Convertible RWD

    -

    Maintenance & Repair

  • Could I do this? 5 Answers

    I have a 1970 mustang that I am restoring. It needs a new break/gas line and a new break setup all the way around, they all stopped working. I'm also not sure if the engine will need rebuilt and res...

    1970 Ford Mustang Grande Coupe RWD

    -

    Maintenance & Repair

  • how do I fix the stitching on the side of my 2008 mustang convertable top 1 Answer

    I am trying to repair the stitching around the side of my 2008 mustang convertible top.

    2008 Ford Mustang V6 Deluxe Convertible RWD

    -

    Maintenance & Repair

Shortcuts

Search Ford Mustang Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    3,140
  • #2
    Bob Beaman
    Reputation
    2,680
  • #3
    rst429
    Reputation
    2,600
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Dodge Charger
30 Great Deals out of 897 listings starting at $4,888
Used Chevrolet Corvette
26 Great Deals out of 769 listings starting at $15,900
Used Ford F-150
311 Great Deals out of 13,802 listings starting at $4,500
Used BMW 3 Series
59 Great Deals out of 1,213 listings starting at $2,500
Used Ford Mustang SVT Cobra
7 listings starting at $25,000
Used Chevrolet Silverado 1500
195 Great Deals out of 7,896 listings starting at $3,000
Used BMW M3
7 Great Deals out of 76 listings starting at $14,995
Used Honda Civic
188 Great Deals out of 3,999 listings starting at $440
Used Jeep Wrangler
133 Great Deals out of 5,957 listings starting at $8,990
Used Toyota Camry
47 Great Deals out of 1,118 listings starting at $2,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.