B1749 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1749 – Park/Neutral Switch Circuit Failure

 

B1749 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1749 Possible Causes

 

Faulty Park/Neutral Switch,Park/Neutral Switch harness is open or shorted,Park/Neutral Switch circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B1749 Description

 

The Body Control Module (BCM) monitors the Park/Neutral Switch. The BCM sets the OBDII code when the Park/Neutral Switch is not to factory specifications.