OBD Guide
ENFRDEESPT

U3525

High Voltage System Interlock Circuit G

U3525 is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit G. Common causes: open or short circuit in the interlock circuit, malfunction of the high-voltage system blocking sensor. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Engine power limitation
  • Inability to start the high voltage system
  • Error message on display
  • Switching to emergency mode

Causes

  • Open or short circuit in the interlock circuit
  • Malfunction of the high-voltage system blocking sensor
  • Wiring harness damage
  • Problems with the high voltage system control module
  • Improper maintenance of high voltage components

How to Fix

  1. Check the integrity of the locking circuit
  2. Check the condition of the blocking sensors
  3. Inspect the wiring harness for damage
  4. Diagnose the control module
  5. Repair only from an authorized dealer

Related codes

U3526U3524

Error U3525 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the U3525 code mean?

U3525 is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit G

What causes a U3525 error code?

The most common causes of U3525 include: Open or short circuit in the interlock circuit; Malfunction of the high-voltage system blocking sensor; Wiring harness damage; Problems with the high voltage system control module.

How do I fix a U3525 diagnostic trouble code?

To fix U3525: Check the integrity of the locking 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 U3525?

Limited driving only, diagnose soon

How much does it cost to fix U3525?

The estimated repair cost for U3525 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat