U3514
High Voltage System Interlock Circuit B High
U3514 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit B High. Common causes: open or short circuit in the interlock circuit, lock sensor malfunction. Estimated repair cost: $56–222.
Symptoms
- Check Engine light comes on
- Vehicle power limitation
- Error message on the dashboard
- Problems with charging a high-voltage battery
- Hybrid/electric system malfunction
Causes
- Open or short circuit in the interlock circuit
- Lock sensor malfunction
- Damage to connectors or wiring
- Problems with high voltage relay
- Software error in control module
How to Fix
- Check the integrity of the locking circuit
- Inspect connectors and wiring for damage
- Check high voltage lockout sensor
- Test the high voltage relay
- Repair only from an authorized dealer
Related codes
Error U3514 by Vehicle Brand
FAQ
What does the U3514 code mean?
U3514 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit B High
What causes a U3514 error code?
The most common causes of U3514 include: Open or short circuit in the interlock circuit; Lock sensor malfunction; Damage to connectors or wiring; Problems with high voltage relay.
How do I fix a U3514 diagnostic trouble code?
To fix U3514: Check the integrity of the locking circuit. Inspect connectors and wiring for damage. Check high voltage lockout sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3514?
Do not drive — repair immediately
How much does it cost to fix U3514?
The estimated repair cost for U3514 is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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