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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 P0031: Ho2S1 Heater Control Circuit Low - Bank 1, DTC P0032: Ho2S1 Heater Control Circuit High - Bank 1, DTC P0051: Ho2S1 Heater Control Circuit Low - Bank 2 Or DTC P0052: Ho2S1 Heater Control Circuit High - Bank 2 >> Possible Causes - DTC P0031 Or DTC P0051

Possible Causes - DTC P0031 Or DTC P0051

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 HO2S1 heater. Possible causes are:

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