I need to know what code 1715 means on my nissan altima

SOURCE: whate is code 1400 and 400 in nissan altima 2001.

P1400 DPFE Circuit Low Input
P0400 Exhaust Gas Recirculation Flow Malfunction

These codes represent a fault in the Auxiliary Emission Controls. Here's a brief describing of the EGR valve. The EGR stands for exhaust gas recycling valve. During cruising speeds, the valve opens allowing exhaust into the intake manifold. The purpose of this is to cool the temperature of the combustion inside the cylinder as the spark plug fires. This in turn, lowers emissions. If the EGR is stuck in either direction(open/closed), it can effect the idle of your vehicle and can stall it out at times. it can also trip the engine light as well. Good rule of thumb is to clean out the carbon out of the intake manifold thoroughly before you install a new EGR. this will prevent the engine light form coming on once more. if the carbon build up is high, chunks of it will jam the EGR, causing it to fail over and over.


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SOURCE: 1993 nissan altima running rough...also misses sometime when idli

spark plugs, air filter and fuel filter.

SOURCE: Service Engine Light On

It has to do with the cps, crankshaft position sensor. Take it to Autozone and ask them to pull the codes to verify them. They will then sell you, if you want it, the correct part - this service is free at autozone!!

SOURCE: i have an engine code u1000 for my 2005 nissan

basically that is a communication code between one or more computers

you need a dealer scan tool or something similar like the $8000 snap-on scanner to verify which computers are suspect and a DVOM to measure voltage on the communication circuits between the suspect computers

long story short.... this is a job for a select few technicians.... your best bet, depending on where you live.... is the dealer

SOURCE: engine light stays on with

This code indicates there is a problem with your PNP (Park Neutral Position) switch On American built cars it's called the Neutral safety switch.
It may have been a "one time" take it to AutoZone and have them reset the error. If it doesn't come back don't worry about it. If it does at least you know now what to look for