What is the lean bank code for Nissan Maxima?
The club for Nissan Maxima and Infiniti I30 / I35 owners, and the official home of Maxima Club of America! After researching for a week or so I haven’t really found a definitive answer for the p0171 code (lean bank 1).
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.
What causes lean Bank 1 on a Nissan?
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. But based on you description, this is due to air intake/vacuum leak in Bank 1.
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’s the problem with Nissan Maxima code p0171?
A Nissan TSB for Nissan Maxima dated March 2004 mentions replacing an air/fuel sensor as a solution for the code P0171. Another Ford TSB for a number of late 90-s Ford vehicles describes a problem with MAF sensor contamination where both codes, P0171 and P0174 would appear together.
What does code p0171-system too lean mean?
Code P0171 – System Too Lean: Symptoms, causes, common problems, diagnostic. The OBDII trouble code P0171 – System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel.
What does p0171 mean on Nissan freeze frame?
Reading and analyzing fuel trims and the freeze frame data is the key to properly diagnosing P0171. Use FIXD to scan your Nissan to verify P0171 is the only code present. If other codes are present, they must be addressed first.
What causes the p0171 code on a Ford TSB?
Another Ford TSB for a number of late 90-s Ford vehicles describes a problem with MAF sensor contamination where both codes, P0171 and P0174 would appear together. Problems with the mass air flow (MAF) sensor causing the code P0171 are fairly common in many vehicles.