B17D4 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B17D4 – Headlamp Status Output Circuit Low

 

B17D4 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B17D4 Possible Causes

 

Faulty Headlamp Switch Sense,Headlamp Switch Sense harness is open or shorted,Headlamp Switch Sense circuit poor electrical connection,Faulty Multi-Purpose Module (Police And Taxi Interface Module (PTIM))

 

B17D4 Description

 

The Multi-Purpose Module (Police And Taxi Interface Module (PTIM)) has detected the Headlamp Switch Sense circuit below a calibrated value.