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Buick
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2002
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Rendezvous CX, AWD
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Engine Controls Self-Diagnostics
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Diagnostic Tests
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DTC P0030: Ho2S Heater Control Circuit Sensor 1
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Conditions For Setting DTC
Conditions For Setting DTC
The PCM detects that the heater control circuit current is greater than the capacity of the PCM internal driver.
The above condition is present for more than 20 seconds.