Engine Speed Sensor Circuit Failure

How to repair p0725 code engine speed sensor input circuit malfunction. The engine control module ecm monitors the engine speed through the crankshaft position ckp sensor with the engine running and send signal to the. The engine input speed sensor is responsible for sending a signal about the engine s speed to the powertrain control module pcm.

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No engine position or speed detected at pin 17 or pin 9 of the engine harness. This type of code may be caused by a mechanical problem or an. The vehicle speed sensor does this by taking note of at what rate the crankshaft is spinning. The p0725 trouble code detects an issue with the engine speed input circuit.

Engine ecm has detected a failure in. The presence of a stored code p0725 means that the powertrain control module pcm has detected a circuit malfunction with the engine speed sensor input signal. In some applications the sensor is also used as the source of vehicle speed. P0723 meaning the output shaft speed oss sensor provides the powertrain control module with information about the rotational speed of an output shaft the pcm uses the information to control and diagnose powertrain behavior.

Failure to shift gears. If the input speed sensor fails it means your car does not know how fast it is moving which can cause many systems to fail. The active wheel speed sensor generates a signal that is sent to the abs module. An engine speed sensor also known as vehicle speed sensor retrieves and sends data to your car s computer system a car speed sensor shows the car s engine spinning rate.

The symptoms can include. Engine speed timing sensor circuit test smcs 1912 038 system operation description. Use this procedure under the following situation. The engine speed input sensor is sometimes called the transmission input speed sensor and the input speed sensor.

Check engine light turns on. The wheel speed sensor circuitry connects to the abs module through 2 wires and a connector at each wheel speed sensor. When the ignition is turned to the run position the abs module carries out a self test by sending a reference voltage to all of the wheel speed sensors through their circuitry to determine if they are functional. When the ignition is turned to the run position the abs module carries out a self test by sending a reference voltage to all of the wheel speed.

Fc 268 high counts. Fuel pressure in the accumulator is not changing with engine operating conditions fuel pressure sensor fault. The p0725 code is a generic obd ii trouble code that notes a problem with the engine speed input circuit. What the p0725 code means.

There is an active diagnostic code or an easily repeated diagnostic code that is associated with either the primary engine speed timing sensor or the secondary engine speed timing sensor. Fc 115 or fc 121 engine position engine speed circuit failure. The wheel speed sensor circuitry connects to the abs module through 2 wires and a connector at each wheel speed sensor.