DTC Troubleshooting: U1280
DTC B1280:
 Parking and Back-up Sensor Control Unit Communication Bus Line Error (BUS-OFF)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for at least 6 seconds.
  1. Check for DTCs with the HDS.
Is DTC U1280 indicated?
YES -
Replace the parking and back-up sensor control unit .■
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.■