AutoCodes - OBDII Code List - B1142 MERCURY

B1142 MERCURY - Ignition Status 1 Signal Invalid

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
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B1142 MERCURY Possible Causes

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

How do I fix code B1142 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 B1142 MERCURY code

Labor: 1.0

The cost of diagnosing the B1142 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)

B1142 Mercury Description

On vehicles equipped with a conventional ignition switch, fused battery voltage is sent to the ignition switch from Battery. This voltage is then sent to the Body Control Module (BCM) along one of 3 circuits, depending on ignition switch position.
On vehicles equipped with a start/stop switch, fused battery voltage is sent to one set of contacts in the start/stop switch from Battery. When the switch is pressed, this voltage is then sent to the Body Control Module (BCM), the Remote Function Actuator (RFA) module and the PCM. The other set of contacts in the start/stop switch connects the BCM to ground. When the switch is pressed, the BCM detects this ground signal and takes appropriate action.
OBDII Code B1142 Mercury - Ignition Status 1 Signal Invalid - AutoCodes.com

B1142 MERCURY More Information

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