P0A60
Drive Motor A Phase V Current.
- Generic
- Powertrain
- Generic code
- High severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- A
- AreaHybrid propulsion
- 60
- FaultThe specific fault in that area
What it means
P0A60 is the generic code for a fault in the Drive Motor 'A' Phase V current measurement on a hybrid or electric vehicle. The motor or inverter control unit monitors the current in each of the three motor phases, and it saw a Phase V reading that was implausible, out of range, or did not match the other phases or the commanded torque. The exact setting conditions vary by model, so check the manufacturer's data for that vehicle.
Symptoms
- Hybrid or EV system warning light, or malfunction indicator lamp, on
- Reduced power or limp-home mode
- Vehicle will not enter Ready mode or shuts down while driving
- Rough, jerky or whining motor operation under acceleration
- Engine running more often than normal on a hybrid, or reduced electric-only driving
Possible causes
- Faulty Phase V current sensor or its signal circuit inside the inverter or motor assemblylikely
- Damaged, corroded or loose wiring or connectors between the motor, inverter and control unitlikely
- Fault in the inverter power stage or control board affecting Phase Vpossible
- Drive motor winding fault or insulation breakdown causing unbalanced phase currentpossible
- Loose or damaged high-voltage phase cable or terminal causing a poor connectionpossible
- Outdated or faulty control unit software where the manufacturer has issued a fix for this faultrare
How to diagnose
- Read all stored and pending codes and the freeze frame data, noting vehicle speed, motor torque request, temperatures and high-voltage battery state at the time of setting.
- Check for related codes such as motor position sensor, inverter, high-voltage battery or insulation fault codes, and diagnose those first if present.
- Check for technical service bulletins and software updates for the vehicle and the code.
- Carry out a visual inspection of the low-voltage wiring and connectors to the inverter and motor for damage, water ingress, corrosion and pin tension, with the high-voltage system made safe by a trained person.
- Monitor live data for the U, V and W phase currents while the motor is driven, and compare Phase V with the other two phases.
- With the high-voltage system isolated by a qualified technician, check the phase cable terminals for tightness and heat damage.
- Measure motor winding resistance and insulation resistance to the manufacturer's procedure and specification.
- Check the inverter sensor supply and signal circuits for continuity, shorts and voltage, following the wiring diagram for that model.
How to fix
- Repair or replace damaged wiring, terminals or connectors in the affected circuit.
- Retighten or replace damaged high-voltage phase connections, carried out only by a technician trained in high-voltage work.
- Replace the inverter or the current sensor assembly if it is confirmed faulty, where the manufacturer allows it to be serviced separately.
- Repair or replace the drive motor if windings or insulation are found to be faulty.
- Update the control unit software if a manufacturer update addresses this fault.
Can I keep driving?
Avoid driving if the car is in limp mode, shuts down, or shows a high-voltage system warning, because power can be lost without notice. Only high-voltage trained technicians should work on this system, so have the car recovered or inspected promptly.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.