Who this is for
Focused support at the right project stage
For workshops and owners with a converted or prototype EV that has intermittent faults, incomplete integration, undocumented electronics or a component that is not responding as expected.
Specialist EV engineering
EV Diagnostics & CAN Bus Integration
Structured fault finding when an EV conversion will not charge, drive, communicate or behave consistently.
Discuss an EV faultDirect answer
Can VASS diagnose CAN bus and charger faults?
Yes. VASS can capture and interpret CAN traffic, check power and wake-up conditions, identify missing or invalid messages, and trace faults across the charger, BMS, inverter, DC-DC converter, dashboard and vehicle controls.
What VASS can help with
Defined engineering scope
- CAN capture, message analysis and network architecture
- Charging, BMS, inverter and DC-DC fault finding
- Gateway, dashboard and vehicle-control integration
- Test plans, wiring review and clear diagnostic findings
Common problems solved
From uncertainty to a clear next step
- A vehicle that powers up but will not enter drive
- AC or DC charging that stops, refuses to start or reports a fault
- Missing state-of-charge, temperature or warning information
- Intermittent communication and undocumented CAN behaviour
Engineering approach
Diagnosis starts with the vehicle state and the interfaces between systems, not an assumed failed component.
Record the configuration
The installed components, wiring information, symptoms and work already attempted establish the starting point.
Reproduce and measure
Power, wake-up conditions and CAN traffic are checked while the fault is reproduced in a controlled way.
Resolve the interface
Wiring, communication, startup logic or component integration is addressed according to the evidence found.
Commission and document
Charging, drive readiness, controls and fault behaviour are checked after the defined rectification work.
For workshops & specialist builders
Independent EV engineering support for an inherited conversion.
A workshop can retain its customer and the wider vehicle project while VASS investigates the EV system, reports the findings and agrees a defined rectification or commissioning scope.
Discuss engineering supportFrequently asked questions
Useful answers before an enquiry
A few clear answers to help you decide whether VASS is the right fit before getting in touch.
Can VASS work on a part-built conversion?
Yes. Existing work can be assessed and a contained diagnostic scope agreed before changes are made.
Do I need to know which component is faulty?
No. Describe the symptoms, when they occur and what has already been tested. Structured diagnosis is intended to separate root cause from assumptions.
Can diagnostics lead into conversion support?
Yes. Where the issue is wider than one fault, VASS can define follow-on EV conversion project support and integration work.
Start a conversation
Discuss an EV fault
Tell us about the vehicle, the work already completed and the outcome you need. VASS will suggest a practical next step.