U0124moderate severityNetwork
Lost Communication with Lateral Acceleration Sensor Module
on 2009 Kia Optima 2.7L V6 · FWD
What this code means
Cannot communicate with the lateral G-force sensor module.
Symptoms
- Stability control disabled
- ESC warning light
- Rollover protection limited
Common causes
- Lateral acceleration sensor failure
- CAN bus wiring
- Module power loss
- Sensor damage
Diagnostic steps
- Check sensor fuse
- Test power and ground
- Check CAN wiring
- Inspect sensor mounting
- Test sensor output with scan tool
Repair notes
Lateral acceleration sensor is part of stability control system. Check mounting and wiring.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus