ICCU DC/DC Converter Hardware Fault
The vehicle's Integrated Charging Control Unit (ICCU) has suffered an internal hardware sensor failure within its built-in DC-to-DC converter matrix. This critical failure blocks the car's ability to pull high-voltage battery power down to maintain the auxiliary 12V loop, causing the car to quickly lose electronic systems.
Estimated Cost
$2,600
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 off the road immediately as the 12V accessory network will quickly collapse and brick the steering.
- 2
Check for open manufacturer safety recalls or service campaigns regarding widespread ICCU component extensions.
- 3
Connect an external automotive smart charger device to keep the auxiliary 12V battery from dying during tow loading.
- 4
Tow the car to an authorized workshop facility and run a deep system verification scan across the charging data lines.
- 5
Check the main internal high-voltage fuse links protecting the ICCU platform frame, looking for open blown filaments.
- 6
Simultaneously replace the complete faulty Integrated Charging Control Unit (ICCU) housing assembly along with the primary high-voltage system protection fuse block.
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 P1A9096 fault.
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