U352C
High Voltage System Interlock Circuit H High
U352C is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit H High. Common causes: open circuit in high voltage blocking circuit, short circuit in wiring. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- The car may go into emergency mode
- Reduced power or inability to start
- Errors in the operation of the hybrid system
Causes
- Open circuit in high voltage blocking circuit
- Short circuit in wiring
- Lock sensor malfunction
- Problems with the high voltage system control module
- Contact corrosion
How to Fix
- Check the integrity of the locking circuit
- Inspect connectors and wiring for damage
- Check the lock sensor
- Scan the control module for additional errors
- Repair only from an authorized dealer
Related codes
Error U352C by Vehicle Brand
FAQ
What does the U352C code mean?
U352C is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit H High
What causes a U352C error code?
The most common causes of U352C include: Open circuit in high voltage blocking circuit; Short circuit in wiring; Lock sensor malfunction; Problems with the high voltage system control module.
How do I fix a U352C diagnostic trouble code?
To fix U352C: Check the integrity of the locking circuit. Inspect connectors and wiring for damage. Check the lock sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U352C?
Do not drive — repair immediately
How much does it cost to fix U352C?
The estimated repair cost for U352C is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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