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P0490moderate severityPowertrain

EGR Control Circuit High

on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD

What this code means

The PCM has detected a high voltage condition in the EGR control circuit. This may indicate an open circuit or wiring fault affecting EGR operation.

Symptoms

  • Check engine light on
  • Rough idle
  • Increased emissions

Common causes

  • Open circuit in wiring
  • Faulty EGR valve
  • Corroded connector
  • Faulty PCM

Diagnostic steps

  1. Scan for stored codes
  2. Check EGR control circuit voltage
  3. Inspect wiring for opens
  4. Test EGR valve operation

Other Powertrain codes on this vehicle

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