Right Stop Lamp Circuit


Table of contents

C111A MERCURY Possible Causes

  • Faulty Right Stop Lamp
  • Right Stop Lamp harness is open or shorted
  • Right Stop Lamp circuit poor electrical connection
  • Faulty Stop Lamp Switch
  • Faulty Body Control Module (BCM)

How do I fix code C111A 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.

Tech Notes

  • C111A:11 Right Stop Lamp: Circuit Short to Ground
  • C111A:15 Right Stop Lamp: Circuit Short to Battery or Open

Cost of diagnosing the C111A MERCURY code

  The cost of diagnosing the C111A 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)

C111A MERCURY Description

  The Body Control Module (BCM) monitors the Right Stop Lamp. The BCM sets the OBDII code when the Right Stop Lamp is not to factory specifications.

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