Engine-Codes - Mercury - B12E0 Mercury

B12E0 Mercury Code - Off Road Indicator Circuit

- Code Popularity: 525 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B12E0 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 Off-Road Mode Switch
  • Off-Road Mode Switch harness is open or shorted
  • Off-Road Mode Switch circuit poor electrical connection
  • Faulty Transfer Case Control Module (TCCM)

Code Tech Notes

B12E0:11 Off Road Indicator Circuit Short to Ground
B12E0:12 Off Road Indicator Circuit Short to Battery
B12E0:13 Off Road Indicator Circuit Open

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How to Fix the DTC B12E0 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 B12E0 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?

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

What Does the B12E0 Mercury Code Mean?

When the off-road switch is depressed, a signal is sent to the Transfer Case Control Module (TCCM) which alerts other modules along the HS-CAN that off-road mode is being requested. Other vehicle functions change to accommodate off-road mode and an indicator illuminates on the Off-Road Mode Switch confirming off-road mode. The OBDII code sets when in Off-Road Mode, the TCCM senses the indicator lamp circuit is not to factory specifications.

B12E0 Mercury Code - Off Road Indicator Circuit

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