B1404 - Driver Side Airbag Deployment Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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B1404 Possible Causes

  • Faulty Driver Side Airbag
  • Driver Side Airbag harness is open or shorted
  • Driver Side Airbag circuit poor electrical connection
  • Faulty Restraint Control Module (RCM)

First diagnose B1404 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

B1404 Tech Notes

B1404:11 Driver Side Airbag Deployment Control Circuit Short to Ground
B1404:12 Driver Side Airbag Deployment Control Circuit Short to Battery
B1404:13 Driver Side Airbag Deployment Control Circuit Open
B1404:1A Driver Side Airbag Deployment Control Circuit Resistance Below Threshold

Cost of diagnosing the B1404 code

    Labor: 1.0

    The cost of diagnosing the B1404 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

B1404 Possible Symptoms

  • Air Bag Warning Light ON

B1404 Description

The Restraint Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the PID is the deployment loop resistance measured by the RCM. If the value displayed is lower or higher than the desired range, the RCM can set a Diagnostic Trouble Code (DTC). As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern.
OBDII Code B1404 - Driver Side Airbag Deployment Control Circuit - AutoCodes.com

B1404 More Information

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Get Access to Factory Service Manuals

B1404 Information for specific makes

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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