B1051

DTC Troubleshooting: B1051, B1052

DTC B1051: Relay Control Module Internal (CPU) Error

DTC B1052: Relay Control Module Internal (EEPROM) Error

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back ON (II).

3. Wait for more than 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1051 or B1052 indicated?
YES - Faulty relay control module, replace the under-hood fuse/relay box.

NO - Intermittent failure, the system is OK at this time.