2001 Nissan Sentra Two codes P0430, P0175

Tiny
BIGGE
  • MEMBER
  • 2001 NISSAN SENTRA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
My car started shutting off at idle, but would crank back up. One mech changed O2 sensor Bank 2 sensor 1 and also plugs. Car still ran rough, took car to another shop and they said catalytic converter was clogged, I did not fix but took it to Nissan dealer for further inspection they could not find codes but did a fuel and air cleanup, car ran good for 300 miles and still do but Im getting two codes now, P0430 and P0175. But car is running good
Monday, November 25th, 2013 AT 3:51 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,076 POSTS
Is the engine running smoothly now? I also need to know what size engine you have. Have the techs checked for vacuum leaks? Does the light ever go out?
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Monday, November 25th, 2013 AT 6:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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I forgot to ask. Has anyone checked fuel pump pressure and the injectors?
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Monday, November 25th, 2013 AT 6:11 AM
Tiny
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  • 15 POSTS
The dealership did a check but I don't know if they checked fuel pressure, the car is running good for now, I reset the codes and it ran about 20 miles then the light came back on, Im fixing to check what the codes are this time, the motor is a 1.8. Checked codes and now it is P0420 and P0430. Pulled hose off vacuum hose off of fuel regulator and there was nothing leaking out of hose
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Monday, November 25th, 2013 AT 11:07 AM
Tiny
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  • 110,076 POSTS
When you removed the hose, did the pressure increase?
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Monday, November 25th, 2013 AT 5:13 PM
Tiny
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  • MEMBER
  • 15 POSTS
If it did I could not tell engine idle did not change, I could feel vacuum from manifold side
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Monday, November 25th, 2013 AT 7:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,076 POSTS
I would have thought it would have changed.
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Tuesday, November 26th, 2013 AT 5:50 AM
Tiny
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  • MEMBER
  • 15 POSTS
I tried it again and nothing changed, I can hear air sucking from manifold
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Tuesday, November 26th, 2013 AT 10:58 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,076 POSTS
I would have it checked.
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Tuesday, November 26th, 2013 AT 5:01 PM

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