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P2AAC Powertrain

Diesel Fuel Presence Sensor Circuit

The ECM detects a generic fault on the diesel fuel presence sensor circuit. Reading cannot be used reliably for control.

Affected components

  • Diesel fuel presence sensor
  • Wiring harness
  • Ecm

Common causes

  • High likelihood: Sensor failed
  • Medium likelihood: Wiring or connector fault

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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