B12CA MERCURY - Start/Stop Eco-Start Status Indicator Circuit Short
B12CA MERCURY Possible Causes
- Faulty Start/Stop Button
- Start/Stop Button harness is open or shorted
- Start/Stop Button circuit poor electrical connection
How is the B12CA MERCURY code repair?Start by checking 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.
What is the cost to diagnose the B12CA MERCURY code
Labor: 1.0The cost to diagnose the B12CA 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.
- Engine Light ON (or Service Engine Soon Warning Light)
B12CA MERCURY MeaningThe stop-start disable button is a momentary contact switch. It is normally open, Controlled Area Network (CAN) signal low. Closed (button being pushed) is CAN signal high. The Front Controls Interface Module reads the switch status and sends it over CAN to the Powertrain Control Module (PCM). If the button is stuck open, there are no low to high transitions. Since the PCM does not recognize a button push, stop-start will not be disabled if requested by the customer. If the button is stuck closed, there are no low to high transitions. Since the PCM does not recognize a button push, stop-start will not be disabled if requested by the customer.
More InformationNeed more information on how to fix the B12CA MERCURY code?
Get Access to Factory Service Manuals