How do I fix a po171 code?

What repairs can fix the P0171 code?

1. Replacing the fuel pump.
2. Replacing the fuel filter.
3. Replacing the fuel pressure regulator.
4. Replacing the powertrain control module.
5. Replacing one or more injectors.
6. Replacing one or more oxygen sensors.
7. Replacing the mass air flow sensor.
8. Repairing a vacuum leak.

What does the p0102 diagnostic trouble code mean?

This P0102 diagnostic trouble code (DTC) means that there is a low condition detected in the Mass Air Flow (MAF sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not performing within the normal expected range of the calculated MAF value.

What do I need to know about DTC p0411?

DTC P0411 P0137 P2096 P0301 P2270 are all showing up. So far I have replaced the Down stream Oxygen sensor and the secondary air intake control valve. I am struggling with what to do next.

What causes the p0441 code on the EVAP system?

Loose fuel tank filler cap is the most common cause that triggers the P0441 code. What does this mean? When is the code detected? Possible a noticeable fuel odor caused by the release of fuel vapors The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system.

What is the p0411 secondary air injection code?

Other secondary air injection system trouble codes include P0410, P0412, P0413, P0414, P0415, P0416, P0417, P0418, P0419, P041F, P044F, P0491, and P0492. Symptoms of a P0411 DTC may include: Backfiring in the exhaust under hard acceleration Engine running rich (This is counter-intuitive. See explanation below)

What does p0171 and po174 mean?

A continual low voltage reading indicates a lean fuel mixture, too much oxygen. The optimal ratio is 14.7:1 (air:fuel). When your powertrain/engine control module receives a reading that indicates there’s too much oxygen and the ratio is incorrect, it sends an error code P0171 or P0174.

What does the p0171 code on a Volkswagen mean?

P0171 VOLKSWAGEN 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 persistss the front oxygen (O2) sensor may need to be replaced.

What causes a lean mixture on the p0171 code?

Intake leaks are a widespread problem when it comes to the P0171 code. Intake/Vacuum/boost pipe leaks can trick the MAF sensor and cause a lean mixture. The MAF sensor measures all air that is going into the engine and telling the engine control unit which amount of air it is.

What causes a p0171 fuel trim system Lean Bank 1?

If the problem persists the front oxygen (O2) sensor may need to be replaced. The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate.