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 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).
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 does p0171 mean on a check engine light?
When fuel injection adjustments become too large, the fault code P0171 will be sent to the ECM, which will trigger the check engine light to illuminate. This code could either mean that the oxygen sensor is detecting too much oxygen or too little fuel in the mixture. This lack of fuel is known as a lean mixture.
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.
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).