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DTC P0505: Idle Air Control System Problem

Fig 1: DTC P0505 Detection Condition & Possible Causes Chart

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Diagnostic Procedure

Fig 2: DTC P0505 Diagnostic Procedure Chart (Step 1-2)

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Fig 3: DTC P0505 Diagnostic Procedure Chart (Step 3-12)

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Fig 4: DTC P0505 Diagnostic Procedure Chart (Step 13-16)

Courtesy of MAZDA MOTORS CORP.