DTC 42

DTC 42: Regulator Malfunction
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. With the ignition switch ON (II), press the brake pedal several times.
4. Check for DTCs with the HDS.
Is DTC 42, 46, or 47 indicated?
YES - Replace the servo unit.
NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the servo unit.