P0727 Engine Speed Input Circuit No Signal

Possible causes

– Faulty Crankshaft Position (CKP) Sensor
– Crankshaft Position (CKP) Sensor harness is open or shorted
– Crankshaft Position (CKP) Sensor circuit poor electrical connection
– Communication error between the Engine Control Module (ECM) and Transmission Control Module (TCM)

What about the obd code?

The P0727 Codes is triggered when the TCM receives no signal from the ECM.

Symptoms

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

P0727 Description

The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).