Variable Voltage Controller Over Temperature
Table of contents
P1A1A MERCURY Possible Causes
- Damaged transaxle
- Motor electronics cooling system concerns
- The vehicle was driven beyond its design specifications
How do I fix code P1A1A 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 P1A1A MERCURY code
The cost of diagnosing the P1A1A 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)
P1A1A MERCURY Description
The Variable Voltage Controller is located within the transaxle. The variable voltage controller is a bidirectional voltage boost converter that couples the high voltage traction battery to the transaxle’s generator motor and traction motor. The variable voltage controller steps up the voltage output to maximize motor and generator efficiency. This Diagnostic Trouble Code (DTC) indicates that a variable voltage controller temperature sensor experienced an over-temperature condition.