U3526
High Voltage System Interlock Circuit G Performance
U3526 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit G Performance. Common causes: open or short circuit in the interlock circuit, lock sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced vehicle power
- Problems starting the engine
- Limitation of hybrid system operation
- High voltage system fault warning
Causes
- Open or short circuit in the interlock circuit
- Lock sensor malfunction
- Wiring harness damage
- Problems with the high voltage system control module
- Contact corrosion
How to Fix
- Check the integrity of the locking circuit
- Check the status of the lock sensor
- Inspect the wiring harness for damage
- Check connections and contacts
- Scan the control module for errors
- Repair only from an authorized dealer
Related codes
Error U3526 by Vehicle Brand
FAQ
What does the U3526 code mean?
U3526 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit G Performance
What causes a U3526 error code?
The most common causes of U3526 include: Open or short circuit in the interlock circuit; Lock sensor malfunction; Wiring harness damage; Problems with the high voltage system control module.
How do I fix a U3526 diagnostic trouble code?
To fix U3526: Check the integrity of the locking circuit. Check the status of the lock sensor. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U3526?
Do not drive — repair immediately
How much does it cost to fix U3526?
The estimated repair cost for U3526 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat