Airbag/SRS light on your vehicle? U3516 indicates High Voltage System Interlock Circuit C Performance fault—airbag may not fire. Scan, reprogram or repl...

Your vehicle shows U3515—voltage system interlock circuit C fault, risking airbag deployment; scan, test HV interlock, and have the module repaired.

Airbag warning on your vehicle? High Voltage System Interlock Circuit B high, risking airbag function. Scan the module and have it re‑programmed or repl...

Your vehicle shows a safety warning; a low HV Interlock Circuit B can stop airbag deployment. Scan U3513 and have the module checked immediately today.

Airbag warning light on your vehicle? U3512 = High Voltage System Interlock Circuit B performance fault—safety at risk. Scan and have the module repaired.

Airbag warning light on your vehicle? U3511 signals a High Voltage System Interlock Circuit B fault, stopping deployment. Scan and have module repaired.

Calibration error code appears on your vehicle? Missing module calibration can disrupt system communication—run a scan and reprogram the module now.

U3509 code means low power to your vehicle’s C circuit—critical module functions may fail. Scan, test the feed, then replace or reprogram the module.

Electrical warning lights on your vehicle? U3508 means Control Module Input Power C circuit out of range, risking key functions. Scan and repair now.

Power drops to a control module in your vehicle? U3507 means the B‑circuit input is intermittent—scan, test wiring, then replace or reprogram the module.