Faulty inverter voltage sensor, or a fault inside the inverter assembly that houses it; Signal circuit shorted to a voltage supply, or a wiring fault giving a high reading; Damaged, corroded or loose low-voltage connector at the sensor or inverter; Fault in the sensor reference supply or ground circuit that skews the signal high; Fault in the inverter or motor control unit, or outdated software where this is a known issue for the model; Moisture or coolant contamination in the inverter or its connectors.

P0DA6

Drive Motor B Inverter Voltage Sensor A” Circuit High.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
D: AreaReserved
A6: FaultThe specific fault in that area

What it means

P0DA6 is a generic hybrid/EV code meaning the control unit sees the signal from inverter voltage sensor 'A' for drive motor 'B' as higher than its expected range. This points to an electrical problem in the sensor circuit or the sensor itself, or to a reading that does not match other voltage data. The exact sensor location and the way the voltage is measured depend on the model and system design.

Symptoms

Hybrid or EV system warning light on the dashboard
Reduced power or limp-home mode
Reduced or lost electric drive assistance
Car refuses to enter Ready mode or shuts down the drive system
Poor efficiency or higher fuel use on a hybrid

Possible causes

Faulty inverter voltage sensor, or a fault inside the inverter assembly that houses itlikely
Signal circuit shorted to a voltage supply, or a wiring fault giving a high readinglikely
Damaged, corroded or loose low-voltage connector at the sensor or inverterpossible
Fault in the sensor reference supply or ground circuit that skews the signal highpossible
Fault in the inverter or motor control unit, or outdated software where this is a known issue for the modelrare
Moisture or coolant contamination in the inverter or its connectorsrare

How to diagnose

Read all stored and pending codes and the freeze frame data, noting any related inverter, motor, or high-voltage battery codes.
Check for manufacturer service bulletins or software updates relating to this code on the specific model.
Follow the manufacturer's high-voltage shutdown and isolation procedure before any work. Only suitably trained technicians should go near high-voltage components or orange cabling.
Inspect the low-voltage wiring and connectors to the inverter and sensor for chafing, corrosion, moisture, bent pins and poor terminal tension.
With the system isolated and the wiring diagram to hand, test the sensor reference supply, ground and signal circuits for shorts to voltage, opens and high resistance.
With the system safely restored, compare the live inverter voltage reading with battery pack voltage and other voltage data to see if it is implausible.
Clear the code and road test or run a system check to see whether it returns immediately or only under certain conditions.
If the circuits test good, follow the manufacturer's test procedure to confirm whether the sensor or inverter assembly is at fault.

How to fix

Repair or replace damaged wiring, and clean or replace corroded or damaged connectors and terminals.
Rectify any short to voltage or reference supply fault found in the circuit.
Replace the inverter voltage sensor or the inverter assembly if the manufacturer's tests show an internal fault.
Dry out and resolve the source of any moisture or coolant ingress, then replace contaminated parts as needed.
Apply an updated control unit calibration only if a bulletin identifies an outdated calibration as the cause for that model.

Can I keep driving?

Medium severity

The car may run in a reduced-power mode, but it can lose drive without warning, so limit driving and get it checked soon. If the car shuts down, warns of a high-voltage fault, or loses drive, stop safely and arrange recovery.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.