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2001 Saturn SL1 code P0405 EGR flow sensor a circuit low in

Tiny
XMIERS86
  • MEMBER
  • 2001 SATURN SL1
  • 4 CYL
  • FWD
  • MANUAL
  • 89,000 MILES
I currently have check engine light on. Went to Advanced Auto Parts and the code p0405 egr flow sensor a circuit low input came up. The salesman suggested cleaning it first rather than selling me a new one. Once this was done my car now has a stalling sensation. If we remove the connection harness of the EGR valve when the car is running and then put it back on within 30 seconds it cures the problem of bucking and stalling. I just recently replaced the O2 sensor with a bosch product. The old sensor had failed too. But the new one does'nt look the same. Could the O2 sensor be causing the misfires?
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Sunday, March 28th, 2010 AT 10:48 PM

2 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
I wouldnt worry about the o2 sensor causing missifires its going to look differnt its a differnt brand and after market.i think ur on the wrong track here here is the trouble tree for the p0405 let me know what u find.


https://www.2carpros.com/forum/automotive_pictures/416332_2001_p0405_1.jpg

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Tuesday, March 30th, 2010 AT 12:19 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Sorry that was a messed up copy of that trouble tree here is a better one


https://www.2carpros.com/forum/automotive_pictures/416332_2001_p0405_part_1_1.jpg



https://www.2carpros.com/forum/automotive_pictures/416332_2001_p0405_part_2_1.jpg


sorry about that.
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Tuesday, March 30th, 2010 AT 12:37 PM

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