1999 Nissan Sentra Code P0450

Tiny
ARODRI5588
  • MEMBER
  • 1999 NISSAN SENTRA
Engine Performance problem
1999 Nissan Sentra 4 cyl Two Wheel Drive Automatic 70ooo miles

I have a code P0450 and P1110 which is Evap pressure sensor related the car hesitated or stumble on aceleration in Idle run perfect. It this code has to do with this problem?
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Tuesday, February 17th, 2009 AT 3:27 PM

1 Reply

Tiny
RASMATAZ
  • EXPERT
Try erasing the code and check the following below

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Tuesday, February 17th, 2009 AT 3:32 PM

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