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1998 Dodge Caravan Service engine soon code 403

Tiny
KGOSTEL
  • MEMBER
  • 1998 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 251,000 MILES
I recently replaced my alternator and had previously replaced the EGR valve. Then it began a loud whine, leaking some type of fluid and transmission failed causing me to have it towed. Transmission was rebuilt by a trusted mechanic but the "Service engine soon" light now is on and I can't get it to go out using my OBD scantool. I think the loud whine is an idler pully bearing, I am losing power stearing fluid too though. The code 403 shows up when I check the OBD II but I am not sure where to start looking for proglems now.
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Sunday, February 22nd, 2009 AT 8:05 PM

1 Reply

Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS
403 is for EGR Solenoid circuit. It does not necessarily mean the EGR valve, rather the its circuit to the PCM.

Start with this diagnostic.


https://www.2carpros.com/forum/automotive_pictures/55316_98caravan403_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_98caravan403_2_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_98caravan403_3_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_98caravan403_4_1.jpg

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Monday, February 23rd, 2009 AT 12:39 AM

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