U3536
High Voltage System Interlock Circuit L Performance
U3536 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit L Performance. Common causes: open or short circuit in the interlock circuit, high voltage lockout sensor malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Vehicle power limitation
- Inability to charge high voltage battery
- Error message on the instrument panel display
- Disabling the High Voltage System
Causes
- Open or short circuit in the interlock circuit
- High Voltage Lockout Sensor Malfunction
- Problems with the high voltage system wiring harness
- Malfunction of the high-voltage system control module
- Corrosion of contacts in the interlock circuit
How to Fix
- Diagnose the high voltage interlock circuit
- Check the condition of the blocking sensors
- Inspect the wiring harness for damage
- Check connections and contacts in the circuit
- If necessary, replace faulty components
- Repair only from an authorized dealer
Related codes
Error U3536 by Vehicle Brand
FAQ
What does the U3536 code mean?
U3536 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit L Performance
What causes a U3536 error code?
The most common causes of U3536 include: Open or short circuit in the interlock circuit; High Voltage Lockout Sensor Malfunction; Problems with the high voltage system wiring harness; Malfunction of the high-voltage system control module.
How do I fix a U3536 diagnostic trouble code?
To fix U3536: Diagnose the high voltage interlock circuit. Check the condition of the blocking sensors. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3536?
Do not drive — repair immediately
How much does it cost to fix U3536?
The estimated repair cost for U3536 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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