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Code P0174 running to lean

Tiny
WAYNE1988
  • MEMBER
  • 2007 PONTIAC G5
  • 140,000 MILES
I have a 2007 Pontiac g5. My ce just came on and the code is p0174 which is the car is running to lean.I looked for leaks but nothing visible?

When I'm giving it the gas I can hear a rattling noise from my exhaust up from somewhere
Sunday, September 23rd, 2012 AT 12:34 AM

6 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
174 could be a vacuum leak, low fuel pressure or a bad mass air flow sensor.

Roy
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Sunday, September 23rd, 2012 AT 12:45 AM
Tiny
WAYNE1988
  • MEMBER
  • 13 POSTS
How do I check for these possible problems without have to take it to a mechanic
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Sunday, September 23rd, 2012 AT 1:18 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You need a fuel pressure gauge, and a scan tool to monitor the long terms. Not really a job for home. At least get a diag to confirm the failure as guesses are expensive and most of the time wrong

Roy
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Sunday, September 23rd, 2012 AT 1:24 AM
Tiny
WAYNE1988
  • MEMBER
  • 13 POSTS
Don't know if this will help but when I fill my car up with gas my ce goes off
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Sunday, September 23rd, 2012 AT 9:34 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
With the 174, it should not effect it.

Roy
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Sunday, September 23rd, 2012 AT 9:47 PM
Tiny
WAYNE1988
  • MEMBER
  • 13 POSTS
So turns out I have a leak at flexpipe infront of my o2 sensor. I was wondering how do I know what kind of cat my car has? Or if I could put a aftermarket one on with my oem exhaust? My flexpipe and cat are one assembly. Thx
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Tuesday, September 25th, 2012 AT 2:21 AM

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