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This Diagnostic Trouble Code (DTC) monitors and evaluates malfunctions in the (EGR) Exhaust Gas Recirculation Diff Pressure. A faulty (EGR) Exhaust Gas Recirculation differential Pressure can lead to uneven running and response problems.
Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EA:21 is above normal value
Observable symptoms
1) Uneven engine speed during idle
Probable cause
1) Connector
2) Wiring harness
3) EGR differential pressure sensor
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