Engine-Codes - Generic - B1405

B1405 Code - Driver Side Curtain Deployment Control 1 Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B1405 code possible causes

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

|How is the B1405 code repair?

Start by checking 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 connector's pins.

|B1405 code tech notes

B1405:11 Driver Side Curtain Deployment Control 1 Circuit Short to Ground
B1405:12 Driver Side Curtain Deployment Control 1 Circuit Short to Battery
B1405:13 Driver Side Curtain Deployment Control 1 Circuit Open
B1405:1A Driver Side Curtain Deployment Control 1 Circuit Resistance Below Threshold

|What is the cost to diagnose the B1405 code

Labor: 1.0

The cost to diagnose the B1405 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B1405 code possible symptoms?

  • Air Bag Warning Light ON

|What is B1405 code meaning?

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 (refer to diagram below in illustration), 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.

|Need more information with the B1405 code?

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|B1405 code information for specific makes

  • B1405 FORD Driver Side Curtain Deployment Control 1 Circuit
  • B1405 LINCOLN Driver Side Curtain Deployment Control 1 Circuit
  • B1405 MERCURY Driver Side Curtain Deployment Control 1 Circuit

|Need help with a B1405 code?

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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.