Dishwasher displays E19; often associated with diverter valve or spray zone control issues.

Safety first: Unplug the dishwasher and turn off water.

Step-by-step checks:

• Symptom confirmation: Dishes in one rack may remain dirty while others are clean, combined with E19.
• Locate diverter valve: On many Vestel models, the diverter is integrated with the circulation pump or mounted on the sump outlet.
• Inspect for obstructions: Remove the sump cover and check for debris that could jam the diverter mechanism.
• Test diverter motor: Measure resistance of the diverter motor coil and check for free movement. If the motor is open circuit or seized, replace the diverter assembly.
• Check position sensor and wiring: Ensure the position sensor (if fitted) and harness are intact and properly connected.

After repair, run a cycle and verify that both upper and lower spray arms receive water and E19 is cleared.