Key In Switch Circuit Open


Table of contents

B10F1 MERCURY Possible Causes

  • Faulty Key-in-ignition switch
  • Key-in-ignition switch harness is open or shorted
  • Key-in-ignition switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)
  • Faulty Instrument Panel Cluster (IPC)

How do I fix code B10F1 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’s pins.

Cost of diagnosing the B10F1 MERCURY code

  The cost of diagnosing the B10F1 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B10F1 MERCURY Description

  The chime can sound all the time as a result of a key-in-ignition warning chime concern or a headlamps on warning chime concern. The OBDII code sets if the Body Control Module (BCM) detects an open on the key-in-ignition switch input circuit or if the BCM detects ignition START, RUN/START or RUN/ACC inputs without the key-in-ignition input.

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