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Home >> Cadillac >> 2004 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (On-Board Diagnostic [Engine Control System]) >> DTC P0037: Middle Ho2S Heater Circuit Low Input >> California Emission Regulation Applicable Module
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California Emission Regulation Applicable Module

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 P0037: Detection Condition & Possible Causes Chart
G00974409Courtesy of MAZDA MOTORS CORP.
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