C1239
ABS Hydraulic Pressure Differential Switch Input Open Circuit
Chassis Vehicle System OBD2 / EOBD
⚠️ Common Causes
- ABS wheel speed sensor fault
- Brake hydraulic issue
- Tone ring damage
🔧 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: C1239
- Type: Chassis
- System: Vehicle System
- Protocol: OBD2 / EOBD / ISO 15765-4
- Severity: Consult a professional technician