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Po451 ??? Anyone know what code this is?

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Po451 ??? Anyone know what code this is?

  #1  
Old 06-10-2008, 10:43 PM
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Po451 ??? Anyone know what code this is?

After my off-roading trips I'm a little worried now that my check engine light came on. I took it to autozone and their diagnostic machine gave them this code. Any ideas what I need to get this fixed? It said something about emissions. And yes I have checked my gas cap to make sure it's tightened. That's the only thing I could think of. Any help?
 
  #2  
Old 06-10-2008, 11:01 PM
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P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

sounds like you need a new sensor or your gas tank seals are bad
 
  #3  
Old 06-11-2008, 12:07 AM
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Location: mobile, Al
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where is this sensor at and how would one replace it? i have same code
 
  #4  
Old 06-11-2008, 05:55 AM
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Originally Posted by jmt0645 View Post
where is this sensor at and how would one replace it? i have same code
X2...Is this something I could do myself or should I take it in? I still have my warranty so I'm going to "assume" it will be covered. Doesn't seem like it should be a wear and tear item.
 
  #5  
Old 04-16-2018, 05:45 PM
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I see that this thread is old, but I hope someone is following it still. Did any of you replace the sensor and solve the problem? I have the same code (P0451) on my 2004 Lariat 2wd. I have 140,000 on it. The dealer wants 330.00 for the part. Checked the voltages on it and they are bouncing around with large differences.
Thanks
Don
 
  #6  
Old 04-16-2018, 09:13 PM
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