DTC B0021-1A: Left Curtain Deployment Control 1 - Circuit resistance below threshold: Action

Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the left side air curtain circuit for short circuit between power and ground. Install a new wiring harness as necessary. If no wiring harness fault exists, using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new left side air curtain