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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
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Monday, November 25th, 2013 AT 3:51 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 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
  • 109,885 POSTS
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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  • MEMBER
  • 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
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
When you removed the hose, did the pressure increase?
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Monday, November 25th, 2013 AT 5:13 PM
Tiny
BIGGE
  • 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
  • 109,885 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
  • 109,885 POSTS
I would have it checked.
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Tuesday, November 26th, 2013 AT 5:01 PM

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