SPONSORED LINKS

Having code P0172, P0175

Tiny
DEEPAKKHAMBA
  • MEMBER
  • 2002 CHRYSLER INTREPID
  • 225,000 MILES
I change both o2 sensor front and rear. Head gas kit. Fuel pressur is okey. Both cat is okey. Campsaft is working good.
Saturday, December 10th, 2011 AT 3:16 AM

4 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
P0172= 1/1 fuel system rich.
P0175= 2/1 fuel system rich.
You probably know this, but rich means too much fuel. Or, not enough air. When was the last time you changed the air filter?

I would suspect something like a leaking fuel injector or a faulty MAP sensor not generating a code. Check the plugs, coil(s), and wires.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, December 10th, 2011 AT 3:25 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system
Was this
answer
helpful?
Yes
No
+1
Saturday, December 10th, 2011 AT 3:33 AM
Tiny
DEEPAKKHAMBA
  • MEMBER
  • 2 POSTS
Hi,
How would I know, I need to change my fuel injector.
Was this
answer
helpful?
Yes
No
Monday, December 12th, 2011 AT 8:35 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to this link for more information: http://www.ecs.fullerton.edu/ sowell/jag/fuelingsys/testrig/InjectorTestRig.pdf
Was this
answer
helpful?
Yes
No
-1
Monday, December 12th, 2011 AT 9:46 AM

Please login or register to post a reply.

Related P0175 Content

Sponsored links