Parking Brake Switch Internal Failure
Table of contents
U2002 MERCURY Possible Causes
- Faulty Parking Brake Switch
- Parking Brake Switch harness is open or shorted
- Parking Brake Switch circuit poor electrical connection
How do I fix code U2002 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
- U2002:47 Parking Brake Switch: Watchdog / Safety Failure
- U2002:96 Parking Brake Switch: Component Internal Failure
Cost of diagnosing the U2002 MERCURY code
The cost of diagnosing the U2002 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)
U2002 MERCURY Description
The parking brake switch has 3 positions; APPLY (pulled up), RELEASE (pushed down), and NEUTRAL. The Anti-Lock Brake System (ABS) Module sends voltage to the parking brake switch and this voltage returns along 1 of 3 circuits. An open, excessive resistance or a short in the parking brake switch circuits or the parking brake switch causes the ABS module to set a Diagnostic Trouble Code (DTC). This DTC sets in continuous memory and on-demand if the test voltage sent to the parking brake switch from the ABS module does not return or returns along an incorrect path.