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Diagnostic Trouble Code: 0066
Diagnostic Trouble Code Name: RF Pretensioner Deployment Loop Voltage Out of Range
Vehicle Make: Holden
Vehicle Model: Commodore (VZ)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
HO2S Heater Control Circuit Sensor 2
Possible Sensor Faults
ECM
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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