How do you fix a code P0171 on a Nissan Altima?
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 Engine code P0174 mean?
lean condition
Code P0174 indicates that there is a lean condition detected by the Engine Control Module (ECM). A lean condition will be created if there is too much air, and not enough fuel, in the air fuel ratio (AFR).
What to do if your Nissan has a p0171 code?
Use FIXD to scan your Nissan to verify P0171 is the only code present. If other codes are present, they must be addressed first. Inspect all vacuum lines and hoses for leaks, and make sure they are properly connected.
What is the OBDII code for a Nissan Altima?
One of the most common trouble codes with the Nissan Altima is the P0171 code. This code number references a number that is given to you when you plug your car into a OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common. P0171: Fuel Trim System Lean Bank 1. Altima P0171 Code Defined
What is the cause of Hyundai p0171 air leak?
It is important to complete the entire diagnostic process when 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 air flow sensor or vacuum leak, thus causing the O2 or A/F sensor to read differently to compensate.
What is the factory service code for a Nissan Maxima?
There is a factory service bulletin for the following Nissan models: 2004 Maxima (A34) with 5 speed A/T only 2004 Quest (V42) with 5 speed A/T only Nissan Factory Service Bulletin OBDII Code P0171 2004 Maxima (A34) with 4-speed A/T and 6-speed M/T 2004 Quest (V42) with 4-speed A/T Nissan Factory Service Bulletin OBDII Code P0171
How much does it cost to diagnose p0171 Nissan code?
The cost of diagnosing the P0171 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. When is the P0171 NISSAN code detected? – Fuel injection system does not operate properly.
What causes the p0171 Nissan fuel injection system to leak?
P0171 NISSAN 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 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.
What does p0171 mean in lean Bank 1?
P0171 (lean fuel injection system, Bank 1) simply means the air-fuel ratio is too lean that the ECM can no longer compensate due to very large error. It can be caused by air intake/exhaust leak, defective front O2 sensor, bad fuel injectors, low fuel pressure or even a dirty/faulty MAF sensor.