Question about 2000 Chevrolet Blazer

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How do i fix my 2000 blazer for DTCs p0171 and p0174

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Your mass airflow sensor could be dirty,on my daughters truck it had both those codes and it was a vacumn leak on the upper intake plenum gaskets ,found that out after replacing the maf sensor twice ,sensor is expensive ,i'd try cleaning it with an electrical cleaner that doesn;t leave a residue,

Posted on Jan 05, 2010

Testimonial: "i had to have the thermostat replaced this morning, they said it was tricky because they had to remove my intake they may have left it a little loose."

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Check you MAF sensor it may need to be cleaned, also look for intake leaks

Posted on Jan 05, 2010

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What are the probable causes of DTCs P0171, P0174, and P0455?


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1998 silverado codes p0171/p0174 what do they mean


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2 Answers

P0313;Misfire Detected with low fuel P0171-System too lean{bank1} P0174 System too lean{bank2} drive cycle


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P0171 -System too Lean (Bank 1).

P0171 and P0174 mean "system too lean" for banks 1

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1 Answer

What is the code P1451 solution? Runs great, codes P1451, P0171 and P0174 are coming up and the engine light is on. Car needs to get inspected but codes need to be fixed.


P0171 - System too Lean (Bank 1)
P0174 - System too Lean (Bank 2)
P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
I'm afraid I don't have enough info to tell you how to fix the P1451 but I'm certain it's the cause of the other two codes.

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1 Answer

What do these trouble codes mean p0171 and p0174


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Jan 05, 2010 | 2000 Chevrolet Blazer

1 Answer

Engine service light illuminated. Diagnostic revealed P0171 and P0174 what does that mean?


code P0171 P0174?? sorry these are not nissan codes but the code readers own codes so return to where the reading was done and ask them

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