OBD-II Trouble Code Description for P0727 GMC

Engine Speed Input Circuit No Signal

What does this mean?

OBD2 Code P0727 GM definition:
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).

Symptoms

Possible sumptoms of OBD code P0727 GM
– Engine Light ON (or Service Engine Soon Warning Light)

Causes

Possible causes of OBD code P0727 GM
– Open or shorted CKP sensor circuit condition – Poor CKP sensor electrical connection – Check communication error between the ECM and TCM – Failed CKP Sensor The Error code is generally activated on detection of the following conditions: The P0727 GM Codes is triggered when the TCM receives no signal from the ECM.

Possible Solutions