Sudden Complete High Voltage Power Loss
The vehicle has experienced an instantaneous complete loss of high-voltage drivetrain propulsion while actively driving on the road. This dangerous fault is typically triggered by a sudden opening of the primary high-voltage battery safety contactor relays to isolate a major circuit issue.
Estimated Cost
$3,800
Repair Time
Dealer visit required
Difficulty
Dealer Only
Can I Fix This Myself?
Professional Service Recommended
This repair involves high-voltage components or specialized equipment.
What professionals will use:
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Step-by-Step Fix Instructions
- 1
Safely guide the vehicle to the road shoulder using manual steering effort and apply the mechanical parking brake.
- 2
Turn off the vehicle hazard controls and inspect the lower battery tray for visible smoke or liquid leaks.
- 3
Hook up an advanced diagnostic tool to read the internal safety fault memory within the powertrain control log.
- 4
Check the main low-voltage security interlock loops under the hood to ensure they are not loose.
- 5
Drop the structural battery pack frame to test the main internal high-voltage safety fuse links.
- 6
Replace the internal battery pack junction box relays, main contactor blocks, or the entire core battery cell assembly.
Check Your Warranty Before Paying
Federal law requires EV battery warranty coverage for 8 years / 100,000 miles minimum. Many manufacturers offer 10-year coverage. An authorized dealership can confirm coverage for your VIN at no charge.
Step-by-Step Diagnostic Wizard
Answer each question to narrow down the root cause of your MECH_PWR_001 fault.
No step-by-step guide yet for MECH_PWR_001
We're still writing the diagnostic flow for this code.
An EV specialist can run a live diagnosis in 15–30 minutes and give you a firm repair quote.
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