P0653 Buick Sensor Reference Voltage B Circuit High

P0654 Buick Engine Speed Output Circuit

Possible causes

– Faulty Instrument Cluster
– Instrument Cluster harness is open or shorted
– Instrument Cluster circuit poor electrical connection
– Faulty PCM

What about the obd code?

If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the P0654 Buick code will set.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0654 Buick Description

The Instrument Panel Cluster (IPC) supplies a voltage to the Engine Speed Output circuit. The Powertrain Control Module (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).

Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera