Voltage Control Unit Malfunction Signal Line Low
Table of contents
P1D81 Possible Causes
- Faulty Voltage Control Unit (VCU)
- Voltage Control Unit (VCU) harness is open or shorted
- Voltage Control Unit (VCU) circuit poor electrical connection
How do I fix code P1D81?
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 P1D81 code
The cost of diagnosing the P1D81 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)
P1D81 Description
The motor control module receives the abnormality inside the Motor Power Inverter (MPI) module detected by MPI module as an abnormality signal. If abnormality information continues for a set time, the motor control module detects a malfunction and stores a DTC.