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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (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 2 >> Possible Causes - DTC P0037 (Bank 1) Or DTC P0057 (Bank 2)

Possible Causes - DTC P0037 (Bank 1) Or DTC P0057 (Bank 2)

WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. 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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