Diagnostic Trouble Code: B0013
Diagnostic Trouble Code Name: Driver Frontal Deployment Loop Stage 2
Vehicle Make: Holden
Vehicle Model: Commodore (VE)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Diagnostic Trouble Code Description:
H02S Heater Control Circuit Low Voltage Bank 1
Sensor 1
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056,
P0057, or P0058
Circuit / System Description
The heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by the ignition?1 voltage circuit through a fuse. Ground is provided to the heater on the low control circuit by a low side driver within the control module. The control module monitors the current draw of the heater to determine if a failure is present.
The HO2S utilizes the following circuits:
A signal circuit
A low reference circuit
An ignition?1 voltage circuit
A heater control circuit
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