P149B Code: Meaning, Causes, and Symptoms | OBD2 Codes

P149B – Evaporative Emission System Shutoff Valve 2 Control Circuit Low

 

P149B Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P149B Possible Causes

 

Faulty Evaporative Emission System Shutoff Valve 2,Evaporative Emission System Shutoff Valve 2 harness is open or shorted,Evaporative Emission System Shutoff Valve 2 circuit poor electrical connection

 

P149B Description

 

The Engine Control Module (ECM) monitors the Evaporative Emission System Shutoff Valve 2. The ECM sets the OBDII code when the Evaporative Emission System Shutoff Valve 2 is not to factory specifications.