U353F
High Voltage System Interlock Circuit N Low
U353F is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit N Low. Common causes: open circuit in high voltage blocking circuit, damage to connectors or wiring. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Vehicle power limitation
- Inability to start the high voltage system
- Error message on display
Causes
- Open circuit in high voltage blocking circuit
- Damage to connectors or wiring
- Lock sensor malfunction
- Short circuit in the circuit
- Problems with the high voltage system control module
How to Fix
- Check the integrity of the locking circuit
- Inspect connectors and wiring for damage
- Test blocking sensors
- Check the control module for errors
- Repair only from an authorized dealer
Related codes
Error U353F by Vehicle Brand
FAQ
What does the U353F code mean?
U353F is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit N Low
What causes a U353F error code?
The most common causes of U353F include: Open circuit in high voltage blocking circuit; Damage to connectors or wiring; Lock sensor malfunction; Short circuit in the circuit.
How do I fix a U353F diagnostic trouble code?
To fix U353F: Check the integrity of the locking circuit. Inspect connectors and wiring for damage. Test blocking sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U353F?
Do not drive — repair immediately
How much does it cost to fix U353F?
The estimated repair cost for U353F is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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