LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine Controls - Self-Diagnostics - 4.0L) >> Diagnostic Tests >> DTC P0030: Ho2S Heater Control Circuit (Sensor 1) >> Description

DTC P0030: Ho2S Heater Control Circuit (Sensor 1): Description

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

The Heated Oxygen Sensor (HO2S) heater is a device used to reduce the time that the sensor takes to go active. The PCM uses a high side driver to apply ignition voltage to bank 1 sensor 1 heater, and a low side driver Output Driver Module (ODM) to supply the ground path. The PCM monitors the high side driver for circuit conditions that are incorrect for the commanded state of the driver. If the PCM detects an improper circuit condition in the high side driver, Diagnostic Trouble Code (DTC) P0030 will set.

scientia non olet · About LEMON Manuals