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Engine light code P0171 and P0130

Tiny
ESRWARREN
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  • 127,000 MILES
This light just came on and local AutoZone gave me these codes. The car has two o2 sensors, and they are not exactly giving them away at 88.00 each. Is there a way to see which sensor is bad? And when I looked them up online, the list of possibilities other than the sensor is quite intimidating. What is the best way to proceed?
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Sunday, March 11th, 2012 AT 8:29 PM

9 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0171 Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks

2. EGR and PCV valve.

3. Low fuel pressure.

4. Dirty fuel injectors.

5. Mass Air Flow Sensor.

6. Oxygen Sensor.
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Sunday, March 11th, 2012 AT 8:36 PM
Tiny
ESRWARREN
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I saw the list of possibilities online, but with the code P0130 the o2 sensor is probably the problem? If not, the other 5 possibilities - how do I rule them out?
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Sunday, March 11th, 2012 AT 9:02 PM
Tiny
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Read the live data on the oxygen sensors with a scantool, the O2 sensors are not cheap-start here
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Sunday, March 11th, 2012 AT 9:18 PM
Tiny
ESRWARREN
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  • 17 POSTS
I do not own a scan tool - like the one they used at Autozone? I do have the ticket printed off for each code.
P0171 - fuel trim bank one condition
p0130 - heated oxygen sensor - bank 1 sensor 1 (H02S11) circuit condition
both tickets show 4 probable causes, similar cause was the o2 sensor?
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Monday, March 12th, 2012 AT 12:26 AM
Tiny
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You gonna have to have the oxygen sensor, its wiring and the computer further tested
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Monday, March 12th, 2012 AT 10:54 AM
Tiny
ESRWARREN
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  • 17 POSTS
So, I have no choice but to take it in to a mechanic?
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Tuesday, March 13th, 2012 AT 12:37 AM
Tiny
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Bring to the professionals
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Tuesday, March 13th, 2012 AT 5:28 AM
Tiny
ESRWARREN
  • MEMBER
  • 17 POSTS
The reason why I used this site in the past - and it was great - was so that I could do it myself and not take it to the professionals. Unfortuntately, I am not able to take the car to the professionals and am willing to work and learn about the car on my own. No insight at all but take it to a mechanic? About an engine code?
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Wednesday, March 14th, 2012 AT 12:44 AM
Tiny
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I've told you what to do-there's nothing else I can do for you-the rest is on your part or if you want we can start throwing parts on it, which I don't intent do-sorry
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Wednesday, March 14th, 2012 AT 9:19 PM

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