B12C2 MERCURY Possible Causes
- Blown High Mounted Stop Lamp Fuse
- Faulty High Mounted Stop Lamp
- High Mounted Stop Lamp harness is open or shorted
- High Mounted Stop Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B12C2 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 B12C2 MERCURY code
Labor: 1.0The cost of diagnosing the B12C2 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.
B12C2 MERCURY Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B12C2 MERCURY MeaningThe cargo lamp illuminates when the courtesy lamps illuminate. The Body Control Module (BCM) uses a separate output circuit that supplies voltage to the cargo lamp. The cargo lamp shares the ground circuit with the High Mounted Stop Lamp. The puddle lamps (if equipped) share the voltage supply with the cargo lamp. This Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground from the cargo lamp output circuit.
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