U3535
High Voltage System Interlock Circuit L
U3535 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit L. Common causes: open or short circuit in the interlock circuit, malfunction of high voltage blocking sensors. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- High Voltage System Error Message Appears
- The car may go into emergency mode
- Problems with charging a high-voltage battery
- Engine power limitation
Causes
- Open or short circuit in the interlock circuit
- Malfunction of high voltage blocking sensors
- Wiring Harness Problems
- Malfunction of the high-voltage system control module
- Corrosion of contacts in the circuit
How to Fix
- Check the integrity of the locking circuit
- Inspect the lock sensors for damage
- Check the condition of the wiring harness
- Scan the control module for errors
- Repair only from an authorized dealer
Related codes
Error U3535 by Vehicle Brand
FAQ
What does the U3535 code mean?
U3535 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit L
What causes a U3535 error code?
The most common causes of U3535 include: Open or short circuit in the interlock circuit; Malfunction of high voltage blocking sensors; Wiring Harness Problems; Malfunction of the high-voltage system control module.
How do I fix a U3535 diagnostic trouble code?
To fix U3535: Check the integrity of the locking circuit. Inspect the lock sensors for damage. Check the condition of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3535?
Do not drive — repair immediately
How much does it cost to fix U3535?
The estimated repair cost for U3535 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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