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p0403

  1. P0403 Error Code

    Hey all! I've got a 2003 Convertible GT reading: P0403 OBDII: Exhaust gas Recirculation (EGR) - circuit malfunction. Does anyone have experience troubleshooting this? I've read things from simply an o2 sensor which would be great and I've done on another vehicle before, but it sounds like it's...
    • Eilermoon
    • Thread
    • Dec 31, 2019
    • code egr o2 sensors obdii p0403 trouble codes troubleshoot vacuum solenoid
    • Replies: 2
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
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