P1443 OBD Code Definition:
P1443 Leakage Diagnostic Pump Control Circuit Signal High
P1443 OBD Code Description:

Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• Wiring and/or Connector(s) from/to Potentiometer for Exhaust Gas Recirculation faulty
• Potentiometer for Exhaust Gas Recirculation  faulty
• Exhaust Gas Recirculation (EGR) Valve  stuck/faulty

Possible Solutions

• Check Wiring and/or Connector(s) from/to Potentiometer for Exhaust Gas Recirculation
• Check/Replace Exhaust Gas Recirculation (EGR) Valve
  • Perform Output Test
• Check Exhaust Gas Recirculation (EGR) System