Nissan altima code p0725




Nissan altima code p0725

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  • How to diagnose, repair, and info on causes of a P engine code which My Nissan Altima has all three of these codes coming up at the same time.

    Possible Causes and Repair Information for P Nissan code. ALTIMA SEDAN · P NISSAN ALTIMA SEDAN · P NISSAN SENTRA .

    P is a diagnostic trouble code (DTC) for "Engine Speed Input Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose.

    Nissan altima code p0725

    Nissan altima code p0725

    Any ideas what could cause this? The reluctor ring is mechanically affixed to the input shaft of the transmission so that when the shaft spins, it spins in conjunction. The basic theory of operation of an engine input speed sensor circuit is that an electromagnetic hall-effect sensor is mounted in such a manner as to allow a toothed reluctor ring to pass in very close proximity to its magnetic tip. It is imperative that a mechanic not only fix the faulty component, but search for greater issues that are causing the damage to the component that needs replacement.

    Nissan altima code p0725

    Nissan altima code p0725

    Nissan altima code p0725

    Nissan altima code p0725

    Nissan altima code p0725

    P Engine Speed Input Circuit Malfunction

    This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. The PCM then uses this information to determine the proper shift strategy, which is then provided to the transmission. If the PCM does not receive a signal from the engine input speed sensor, or if the signal is not gradually increasing which is the expected output , or if the signal is volatile or abnormal, the P trouble code will be triggered.

    The most common problems that result in the P code are a malfunctioning engine input speed sensor, and a faulty transmission output speed sensor. However, many other things can trigger the P code, including:.

    Nissan altima code p0725

    In addition, the car may experience transmission issues, such as an inability to shift smoothly , or even to shift at all. Engine problems may be present as well, including a misfiring engine , hesitation upon acceleration , and occasional stalling. A malfunctioning speedometer and diminished fuel efficiency are common symptoms as well. Then the technician will reset the trouble codes, restart the vehicle, and briefly drive the car to see if the codes return.

    If the codes do not return, the P code was likely triggered erroneously. If the P code is still detected after being reset, then the mechanic should inspect the wires, connectors, and transmission fluid, to search for any basic and easily resolved issues that may be triggering the code. Whenever an issue is found and resolved, the trouble codes should be reset again to see if the P code persists.

    Nissan altima code p0725

    If the P code has proven to be more than just a basic error erroneous trigger, wires, connectors, or fluid , then the input sensor circuit will need to be examined. The technician will do this by besting the reference voltage and ground signals of the input sensor, and seeing if either circuit is open. Any open circuit should be replaced. The most common mistake that is made when diagnosing the P code is a failure to follow the basic OBD-II trouble code diagnosis protocol.

    The protocol should always be followed in order to ensure that inspection and repairs are both thorough and as timely as possible. If the OBD-II trouble code diagnosis protocol is not followed, it is common for the input speed sensors to be replaced without proper inspection, when they may not be causing the P trouble code. In most cases, a vehicle with a detected P trouble code is still very drivable. However, engine and transmission performance will suffer, and there is the risk of further damage being caused to the vehicle.

    It is common for the P trouble code to be accompanied by an output speed sensor code. It is imperative that a mechanic not only fix the faulty component, but search for greater issues that are causing the damage to the component that needs replacement.

    Nissan altima code p0725

    This will help keep the issue from quickly resurfacing. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle.

    Get a quote and book an appointment online or speak to a service advisor at With YourMechanic you can skip the auto shop altogether. They send certified and screened mechanics straight to your door and enable you to save big on car repair and maintenance. Engine Speed Input Circuit Malfunction. Cost of diagnosing the P code.

    03 and ,06 Nissan altima speed sensor removal



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