Engine-Codes - Mercury - B11D8 Mercury

B11D8 Mercury Code - Restraint Event Notification

- Code Popularity: 577 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B11D8 Mercury?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Restraint Control Module (RCM)
  • Restraint Control Module (RCM) harness is open or shorted
  • Restraint Control Module (RCM) circuit poor electrical connection
  • Fualty Battery Energy Control Module (BECM)

Code Tech Notes

B11D8:36 Restraint Event Notification Signal Frequency Too Low
B11D8:37 Restraint Event Notification Signal Frequency Too High
B11D8:38 Restraint Event Notification Signal Frequency Incorrect
B11D8:11 Restraint Event Notification Circuit Short to Ground
B11D8:15 Restraint Event Notification Circuit Short to Battery or Open

⚠ Does your Mercury have Safety Recalls? → Check here

How to Fix the DTC B11D8 Mercury?

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 connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B11D8 Mercury code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

What Does the B11D8 Mercury Code Mean?

The Battery Energy Control Module (BECM) monitors the impact notification output from the Restraint Control Module (RCM). The RCM outputs a Pulse Width Modulation (PWM) voltage on the circuit based on status. If the BECM senses the frequency is out of range, will illuminate the powertrain malfunction (wrench) warning indicator and set a Diagnostic Trouble Code (DTC).

B11D8 Mercury Code - Restraint Event Notification

Need more Information on the 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.