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How do I check the EGR control circuit Code p0403

the OBD readout showed a p0403 code for the egr circuit and a p0300 code for multiple misfires. can these be related and how do I check the egr control circuit.

Vehicle: 2003 ford focus se 2.0 litre dohc vin 3
asked Jun 19, 2012 by jewag (101 points)

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