EV diagnosis, repair, and parts supply

Volttorque

High-voltage fault tracing, battery health checks, charging repairs, drivetrain diagnostics, and EV parts for owners, workshops, and fleets.

Battery and BMS Charging systems Inverter and drive unit EV parts sourcing

Clear answers before expensive replacement.

EV problems often look like a single warning light, but the cause can sit in the battery pack, 12V system, charger, cooling loop, inverter, software, or wiring. Volttorque narrows the fault, verifies the repair path, and helps source the right parts before money is wasted.

Ten problems we diagnose most often.

Search or select a fault to see typical symptoms, checks, and repair direction.

01 Battery system

Range loss or battery degradation

Driver symptoms
Noticeably shorter range, uneven state of charge, pack warnings, or performance limits.
Volttorque checks
Battery health scan, cell balance review, BMS codes, thermal data, charging history, and insulation status.
Repair path
Confirm degradation versus sensor or calibration faults before recommending module service, cooling repair, or software relearn.

Diagnostics and repairs for the systems that make an EV different.

High-voltage diagnostics

Isolation testing, contactor checks, BMS fault tracing, battery health reporting, and safe system shutdown procedures.

Charging and power electronics

Onboard charger faults, DC fast-charge issues, charge port locks, DC/DC converter faults, inverter codes, and communication errors.

Cooling and brake systems

Battery coolant leaks, pump and valve faults, thermal derates, regenerative braking warnings, and brake blending diagnosis.

Fleet and workshop support

Second-opinion diagnostics, used-EV pre-purchase checks, repeat fault tracking, and parts matching for professional repairers.

Measure first. Replace only what fails.

EV repair gets expensive when guesswork enters the bay. The Volttorque process keeps each job traceable from first symptom to verified road test.

  1. Scan Pull vehicle faults, freeze-frame data, charger history, and live values.
  2. Isolate Test the affected circuit or system under safe high-voltage procedure.
  3. Repair Fit, program, or calibrate the confirmed part or subsystem.
  4. Verify Clear codes, stress test charging or driving behavior, and document the outcome.

Parts supply with diagnostic context.

Tell us the fault code, VIN, symptoms, and photos of the part. We can help identify what is needed before you order.

Charge ports and locks

Inlets, door actuators, locking pins, seals, and connector hardware.

Onboard chargers

OBC units, cable sets, communication checks, and fitment support.

DC/DC converters

Auxiliary power faults, 12V charging issues, and replacement matching.

Thermal management

Coolant pumps, valves, sensors, hoses, and battery cooling components.

Drive electronics

Inverters, motor sensors, contactors, harnesses, and diagnostic confirmation.

Service consumables

Brake parts, tires, suspension items, filters, fluids, clips, and seals.

Send the symptoms. We will shape the next test.

Use this form to prepare an email with the vehicle details, fault behavior, and whether you need repair or parts support.

info@volttorque.co.nz
Penrose, Auckland
Diagnostics, repair, and EV parts enquiries