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Diagnostic Trouble Code Results for B0055 for the Chevrolet Caprice (VE)

Caprice (VE) Chevrolet

Diagnostic Trouble Code: B0055

Diagnostic Trouble Code Name: Side Airbag Deployment Commanded

Vehicle Make: Chevrolet

Vehicle Model: Caprice (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 Heater Performance Sensor 2

Possible Sensor Faults

Possible Related Diagnostic Trouble Codes
DTC P0036, P0037, P0038, or P0141

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. A heating element inside the heated oxygen sensor (HO2S) 2 minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by an ignition voltage circuit through a fuse. With the engine running, ground is provided to the heater by the heated oxygen sensor (HO2S) 2 heater low control circuit, through a low side driver within the engine control module (ECM). The ECM uses pulse-width modulation (PWM) to control the heated oxygen sensor (HO2S) 2 heater operation to maintain a specific heated oxygen sensor (HO2S) 2 operating temperature range.

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