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The actual installation is not a horribly complicated job and definitely doable: Ingrid, take a look at this information from the service manual. I am guessing that this relates to the issue with the thermostat, but I'm not 100% sure.ĬAN ANYONE GIVE ME MORE ADVICE/INFORMATION AS TO WHAT I SHOULD DO? HOW MUCH IT WILL COST? P0128 indicates that the computer is detecting that the engine is not reaching operating temperature within a reasonable time after startup. I'm sure I could even find it on eBay for cheap too. I looked it up online from a Mazda parts dealer and it's about $45-$50 depending on which parts dealer you buy it from. People said that they were even able to replace it themselves (if you can get under the car). Some people said that the repair is about $100 (including the parts and labor) and that no one should pay over $200. Once that was replaced, 99% of the people said that the light turned off and that they noticed the car ran better than it did before.
#04 mazda 6 p0171 code#
According to my research, 99% of the people who had this code needed to replace the thermostat. P0126 is either replace coolant temperature sensor or replace the thermostat. Here is what I found according to my research: I have a 2000 GMC Sierra 5.The two codes from the check engine light are: P0126 & P0128
#04 mazda 6 p0171 how to#
✅ How to instantly diagnose a check engine light on your smartphone ✅ 6-step checklist to get the best price on repairs
#04 mazda 6 p0171 download#
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Whether you’re planning to DIY repairs or go to a nearby mechanic, this free report contains valuable information for all drivers.
Air fuel sensor or oxygen sensor $200-$300. Exhaust repair $100-$200 (if welded to repair). For each possible repair, the estimated cost of repair includes the cost of the relevant parts and the cost of labor required to make the repair. At this point if the code still persist you may want to consider replacing your A/F sensor or O2 sensors.įor error code P0171, one or more of the below repairs may be needed to solve the underlying issue. If you confirm there are no vacuum leaks, have a clean mass airflow sensor, and your fuel system is functioning properly, check the exhaust for leaks before the Air Fuel Ratio Sensors or Oxygen sensors if you find any leaks have them repaired. If the check engine light comes back on with code P0171 continue the diagnostic process. Reinstall the mass airflow sensor and clear the check engine light using FIXD. Remove the mass airflow sensor and clean the sensor using mass air flow cleaner or contact cleaner. If check engine light code P0171 is triggered again, check the rest of the vacuum lines for leaks and continue to the rest of the diagnostic process. Reconnect any disconnected vacuum lines and replace any damaged vacuum lines that are leaking, then use FIXD to clear check engine light code P0171. If you suspect a vacuum leak but are having trouble finding it, check out this detailed guide to finding vacuum leaks. If a leak is present, you will hear a hissing sound, though it may be difficult to hear with the engine running. Inspect all vacuum lines and hoses for leaks, and make sure they are properly connected. If other codes are present, they must be addressed first. Use FIXD to scan your vehicle to verify P0171 is the only code present. Tools You May Need (FIXD’s top recommended picks from Amazon):ĭifficulty of Diagnosis and Repair – 3 out of 5. Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0171. Many people will replace the air-fuel sensor or O2 sensor as soon as they get a bad reading, but the root cause is often a dirty or faulty mass airflow sensor or vacuum leak, thus causing the O2 or A/F sensor to read differently to compensate. It is important to complete the entire diagnostic process when diagnosing P0171. It is okay to drive a vehicle with P0171 for a short period of time, but driving with this code for an extended period of time can overheat the engine and cause internal engine damage. Vacuum leaks – PCV hoses, vacuum hoses, intake manifold gasket. When these adjustments become too large, code P0171 is triggered. To keep the engine running properly, the powertrain control module (PCM) tries to compensate for the lean condition by injecting more fuel to the mixture in an effort to maintain the proper 14.7:1 ratio. The lean condition can be caused by a vacuum leak, which introduces more air into the air-fuel mixture, or by a weak fuel system, which does not input enough fuel into the air-fuel mixture. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition exists and code P0171 is triggered. What Does P0171 Mean?Ĭombustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. 
Bank 1 has too much air or not enough fuel.
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