MG ZS (2021-2026) Won’t Start – High Voltage Battery Water Ingress & Isolation Fault
Do you have an MG ZS that won't start, charge or drive?
Don’t ignore it – book a diagnostic today and get expert help.
EV system isolation warning
Vehicle will not start
Vehicle will not charge
Vehicle will not drive
High voltage battery system fault messages
The following fault code(s) may be present
P0AA6 – EV system isolation
Affected Vehicles
MG ZS
- MG ZS 2021
- MG ZS 2022
- MG ZS 2023
- MG ZS 2024
- MG ZS 2025
- MG ZS 2026
Common Failure Symptoms
- Vehicle will not start
- Vehicle will not charge
- Vehicle will not drive
- EV system isolation fault displayed
- High voltage battery warning messages
- Complete loss of electrical propulsion
Do you have an MG ZS that won't start, charge or drive?
Don’t ignore it – book a diagnostic today and get expert help.
MG ZS Diagnostic Report
MG ZS Repairs
First, the faulty high voltage battery pack was safely removed following manufacturer safety protocols for high-voltage systems.
Next, a replacement high voltage battery assembly was installed to restore the vehicle’s electrical propulsion system.
Finally, all required post-repair procedures and safety checks were completed to ensure full system functionality.
- High voltage battery pack removal following safety protocols and isolation procedures
- Replacement high voltage battery pack installation with OE-specification component
- Complete post-repair verification including fault code clearance and system testing
Resolution
Following the high voltage battery replacement and completion of all post-repair procedures, the vehicle was fully restored to operational status. The vehicle now starts, runs and drives without any warnings or fault messages present.
All EV system isolation faults have been cleared. The high voltage battery system operates normally with complete functionality restored. The vehicle has been tested and verified ready for customer collection.
Need Help?
Are you an independent garage, dealership, warranty, fleet or insurance business?
Specialist Support for EV & Hybrid Repairs
We partner directly with independent garages, dealerships, warranty and fleet providers, and insurance companies across the UK to resolve complex EV and hybrid vehicle issues.
If your customer’s vehicle is displaying battery or electrical faults, we offer advanced diagnostics and expert repair solutions that go far beyond simple parts replacement.
Our battery and component repair service includes:
- Nationwide collection and delivery
- Rapid turnaround times
- Comprehensive technical support
Let us help you keep your customers on the road, while enhancing the value and reputation of your services.
Click below to find out how we can support you.
Is the vehicle owned by you or your business?
Have you been advised the battery or component needs replacing on your vehicle?
Before committing to a costly full replacement, talk to us. At LKQ Electriq, we specialise in inspecting, diagnosing and repairing complex battery and component faults (issues that many main dealers won’t touch).
Our expert repair service can restore your Range Rover’s hybrid battery at a fraction of the cost of replacement. We offer:
- Nationwide collection and delivery
- Transparent, honest assessments
- Specialist repairs backed by technical expertise
We’ve helped customers across the country save thousands. Book a diagnostic today and discover how we can help you get back on the road, without breaking the bank.
Click below to find out how we can support you.
Do Cedar Electric repairs have a warranty?
High Voltage System Repairs
Repairs involving high voltage systems typically include a 12-month, unlimited mileage warranty, offering you complete peace of mind.*
Lifetime Guarantee
All work carried out at Cedar Garage is backed by our lifetime workmanship guarantee.
*Terms and conditions apply. Please consult a Service Advisor to confirm the specific warranty details for your vehicle prior to booking.
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