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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0037: Ho2S2 Heater Control Circuit Low - Bank 1, DTC P0038: Ho2S2 Heater Control Circuit High - Bank 1, DTC P0057: Ho2S2 Heater Control Circuit Low - Bank 2 Or DTC P0058: Ho2S2 Heater Control Circuit High - Bank 1 >> Possible Causes - DTC P0037 Or DTC P0057

Possible Causes - DTC P0037 Or DTC P0057

WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction is detected when an excessively low voltage is sent to ECM through HO2S2 heater. Possible causes are:

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