U3545
High Voltage System Interlock Circuit P
U3545 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit P. Common causes: broken wire in the safety circuit, damaged high voltage system connector. Estimated repair cost: $56–167.
Symptoms
- High voltage warning light comes on
- The car does not switch to driving mode
- Reduced power or complete loss of traction
- Related system errors
- Possible high voltage battery shutdown
Causes
- Broken wire in the safety circuit
- Damaged high voltage system connector
- Safety sensor malfunction
- Damage to the insulation of high voltage components
- Problems with the high voltage system control unit
How to Fix
- Check the integrity of all wires in the safety circuit
- Inspect the high-voltage system connectors for damage
- Check the functionality of the safety sensors
- Scan for additional trouble codes
- Repair only from an authorized dealer
Related codes
Error U3545 by Vehicle Brand
FAQ
What does the U3545 code mean?
U3545 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit P
What causes a U3545 error code?
The most common causes of U3545 include: Broken wire in the safety circuit; Damaged high voltage system connector; Safety sensor malfunction; Damage to the insulation of high voltage components.
How do I fix a U3545 diagnostic trouble code?
To fix U3545: Check the integrity of all wires in the safety circuit. Inspect the high-voltage system connectors for damage. Check the functionality of the safety sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3545?
Do not drive — repair immediately
How much does it cost to fix U3545?
The estimated repair cost for U3545 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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