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Diagnostic Trouble Code Results for B0052 for the Holden Commodore (VE)

Commodore (VE) Holden

Diagnostic Trouble Code: B0052

Diagnostic Trouble Code Name: Deployment Commanded

Vehicle Make: Holden

Vehicle Model: Commodore (VE)

Diagnostic Code Entered By: ZerOne

Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm

Please Note: The DTC Information provided has been randomly generated.

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Diagnostic Trouble Code Description: 

HO2S Circuit Slow Response Sensor 2

Possible Sensor Faults

Possible Related Diagnostic Trouble Codes
DTC P0137-P0140, P2270, P2271, or P2A01

Circuit / System Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. The heated oxygen sensor (HO2S) 2 compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The heated oxygen sensor (HO2S) 2 must reach operating temperature to provide an accurate voltage signal. Heating elements inside the heated oxygen sensor (HO2S) 2 minimize the time required for the sensors to reach operating temperature. The engine control module (ECM) supplies the heated oxygen sensor (HO2S) 2 with a reference, or bias, voltage of about 450?mV. When the engine is first started, the ECM operates in open loop, ignoring the heated oxygen sensor (HO2S) 2 voltage signal. Once the heated oxygen sensor (HO2S) 2 reaches operating temperature and closed loop is achieved, the heated oxygen sensor (HO2S) 2 generates a voltage within a range of 0-1000?mV that fluctuates above and below bias voltage. High heated oxygen sensor (HO2S) 2 voltage indicates a rich exhaust stream. Low heated oxygen sensor (HO2S) 2 voltage indicates a lean exhaust stream.

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