Replacing the fuel filter and air filter will set you back $30 to $50 each plus labor. Since the P0171 DTC can be caused by a variety of faults, it is important to follow the proper diagnostic procedures.
If that still doesn’t solve the problem, you want to check for vacuum or exhaust leaks. But if the MAF sensor if faulty or damaged, you need to spend around $40 to $80 for the sensor alone, after labor costs you could be looking at $150. In most cases, cleaning the air filter and MAF sensor is enough to solve the problem. If the sensor is dirty, clean it using a sensor cleaner. While you’re at it, you should also check the MAF sensor. The first thing to do is to replace or clean the air filter and fuel filter. And unfortunately because of the nature of this code, you’ll spend some time isolating the problem. The cost will depend on the source of the problem. How much does it cost to fix P0171 Fault? There are also times when the fault is caused by a faulty O2 sensor as well. The bad news is diagnosing a vacuum leak is tricky without using specialized tools like a Smoke Tester.
#Maf sensor mazda 6 p0171 p0174 code#
If the motor is not getting enough fuel, the trouble code can also be blamed on a plugged or dirty fuel filter.īut in some cases, it can also mean the existence of a vacuum leak in the MAF sensor or PCV connections. In some cases, the trouble code is also triggered by a sticky or failing fuel injector. The code can also be attributed to a faulty or stuck PCV valve. Clean your dirty MAF! Img creds: FamilyHandyMan Cleaning the MAF with some brake cleaner should help isolate or rule this one out. If the filter is clogged or excessively dirty, this is enough to impede or restrict the air flow, hence resulting in a lean running condition.īesides a dirty air filter, the P0171 code can also be blamed on a dirty or faulty MAF sensor and a clogged fuel filter.
The first thing to check is the air filter or air cleaner element.
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