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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 265 (On-Board Diagnostic [Engine Control System]) >> DTC P0030: Front Ho2S Heater Control Circuit Problem >> Diagnostic procedure
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Diagnostic procedure

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: DTC P0030: Diagnostic Procedure Chart (Steps 1-5)
G00974393Courtesy of MAZDA MOTORS CORP.
Fig 2: DTC P0030: Diagnostic Procedure Chart (Steps 6-8)
G00974394Courtesy of MAZDA MOTORS CORP.
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