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OBD CODES

CAR OBD CODES



OBD/DTC Search, e.g.P0654

CAR OBD CODES P0654

P0654 OBD Code Definition:
P0654 Engine Speed Output Circuit
P0654 OBD Code Description:

OBD Code P0654

Engine RPM Output Circuit

What’s mean?

OBD2 Code P0654 Definition:
The Instrument Panel Cluster (IPC) supplies a voltage to the Engine Speed Output circuit. The PCM creates the Engine Speed Output signal by rapidly grounding this circuit via an internal switch called a driver. The other components on this circuit recognize the voltage being pulled to ground as an indication of engine speed. The driver supplies the ground for the component being controlled. Each driver has a fault line which the PCM monitors. When the PCM commands a component ON, the voltage of the control circuit should be low (near 0 volts). When the PCM commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage). If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the DTC to set. Symptoms

Possible sumptoms of P0654
– Engine Light ON (or Service Engine Soon Warning Light) Possible Causes

Possible causes of P0654
– Open or short speed output circuit circuit – Poor speed output circuit electrical connection – Instrument cluster faulty – Faulty PCM Possible Solutions


Note: The information on the P0654 error code is purely informative, if you need more useful information, please consult your technician.

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