What does p0171 mean on a Subaru lean bank?
A code P0171 Subaru may mean that one or more of the following has happened: ?The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of “oiled” air filters may cause the MAF to become dirty if the filter is over-oiled.
What makes a Subaru Forester throw a p0172 code?
This would be the opposite of a lean condition, which’ll throw P0171. The P0172 code on a Subaru Forester will often be thrown if the fuel injection system is not operating properly. Typically the code will be triggered by a rich condition in the engine. There aren’t usually any drivability issues associated with P0172.
What does the p0171 code in front oxygen sensor mean?
If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced.
How to fix p0171 system lean…Fixed?
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What causes the p0171 code on a Subaru Forester?
Vacuum Leaks – With the Subaru Forester, one of the most common cause for the P0171 code to show is a vacuum leak. Take a look around and see if you can find the vacuum leak. Here’s a great YouTube video on how to find a vacuum leak. Oxygen Sensor – The P0171 codes is thrown when the oxygen sensor (s) do not register enough oxygen in the exhaust.
What does p0171 system too lean Bank 1 mean?
P0171 SUBARU Tech Notes If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced. What does this mean?
If the P0171 is combined with the P0174 code, it’s very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced.
What causes the trouble code on a Subaru Forester?
There are many things that can cause the P0171 trouble code on the Subaru Forester. Here are the most common ones. Vacuum Leaks – With the Subaru Forester, one of the most common cause for the P0171 code to show is a vacuum leak. Take a look around and see if you can find the vacuum leak. Here’s a great YouTube video on how to find a vacuum leak.