U351E
High Voltage System Interlock Circuit E Performance
U351E is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit E Performance. Common causes: open or short circuit in the interlock circuit, high voltage lockout sensor malfunction. Estimated repair cost: $56–222.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Inability to start the engine
- Limitation of hybrid system operation
- Error message on the dashboard
Causes
- Open or short circuit in the interlock circuit
- High Voltage Lockout Sensor Malfunction
- Wiring harness damage
- Problems with high voltage connection
- Malfunction of the high-voltage system control unit
How to Fix
- Check the integrity of the high voltage blocking circuit
- Inspect all high voltage connections for damage
- Check the condition of the blocking sensors
- Scan the control unit for additional fault codes
- Repair only from an authorized dealer
Related codes
Error U351E by Vehicle Brand
FAQ
What does the U351E code mean?
U351E is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit E Performance
What causes a U351E error code?
The most common causes of U351E include: Open or short circuit in the interlock circuit; High Voltage Lockout Sensor Malfunction; Wiring harness damage; Problems with high voltage connection.
How do I fix a U351E diagnostic trouble code?
To fix U351E: Check the integrity of the high voltage blocking circuit. Inspect all high voltage connections for damage. Check the condition of the blocking sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U351E?
Do not drive — repair immediately
How much does it cost to fix U351E?
The estimated repair cost for U351E is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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