Engine-Codes
 
OBDII Code List
 
B0090 MERCURY

B0090 MERCURY - Left Frontal Restraints Sensor 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B0090 MERCURY Possible Causes

  • Faulty Left Frontal Restraints Sensor
  • Left Frontal Restraints Sensor harness is open or shorted
  • Left Frontal Restraints Sensor circuit poor electrical connection

First diagnose B0090 MERCURY 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.

Cost of diagnosing the B0090 MERCURY code

    Labor: 1.0

    The cost of diagnosing the B0090 MERCURY 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.

B0090 MERCURY Possible Symptoms

  • Air Bag Warning Light ON

B0090 MERCURY Meaning

The Restraints Control Module (RCM) monitors all of Supplemental Restraint System (SRS) device connections. If the RCM detects a connection or device connected that is not stored in memory or is not configured for the component, the RCM will set a Diagnostic Trouble Code (DTC) and send a message to the Instrument Panel Cluster (IPC) to illuminate air bag warning indicator.
OBDII Code B0090 MERCURY - Left Frontal Restraints Sensor 1 - Engine-Codes.com

B0090 MERCURY More Information

Need more information on how to fix the B0090 MERCURY code?
Get Access to Factory Service Manuals

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.

Related Information