B0018 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B0018 – Passenger Frontal Deployment Loop Voltage Out of Range


B0018 Possible Symptoms


Air Bag Warning Light ON


B0018 Possible Causes


Faulty Inflatable Restraint Instrument Panel,Inflatable Restraint Instrument Panel harness is open or shorted,Inflatable Restraint Instrument Panel circuit poor electrical connection,Faulty Sensing and Diagnostic Module (SDM)


B0018 Description


The Inflatable Restraint Instrument Panel (I/P) module deployment loop consists of a dual stage I/P module, I/P module high control, and I/P module low control circuits for both stages 1 and 2. There are 2 shorting bars used within the I/P module connector which will short together the I/P module high and I/P module low control circuits for both stages 1 and 2 when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing. When the ignition is turned ON, the inflatable restraint Sensing and Diagnostic Module (SDM) performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a Diagnostic Trouble Code (DTC) will be stored in memory.