U1109: SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)
What does U1109 mean?
U1109 is a diagnostic trouble code indicating "SCP (J1850) Invalid or Missing Data for Electric Traction Drive (Inverter)". This code relates to your vehicle's network communication and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Noticeable change in engine performance
- Unusual sounds or vibrations
- Possible issues with network communication operation
- Vehicle may enter reduced power mode (limp mode)
Estimated repair cost
Typical range in Australia (parts + labour)
Common causes
- Faulty network communication component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
This code sits in the stability and traction control system. Electronic stability control, traction control and the sensors feeding them may be offline, so the car will not correct a slide for you. It will feel completely normal right up until you need it, typically in the wet or in a sudden swerve. Get it diagnosed before driving in poor conditions.
Get a diagnosis for YOUR car
Code U1109 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.