U1224
SCP (J1850) Invalid or Missing Data for Primary Id
Network Network Communication OBD2 / EOBD
⚠️ Common Causes
- Loss of communication between modules
- Network termination resistor fault
🔧 Diagnostic Steps
- Connect OBD2 scanner to vehicle
- Read freeze frame data
- Check live data parameters
- Inspect related wiring and connectors
- Test affected sensors or actuators
- Clear code and perform test drive
ℹ️ Code Details
- Code: U1224
- Type: Network
- System: Network Communication
- Protocol: OBD2 / EOBD / ISO 15765-4
- Severity: Consult a professional technician