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P1148: CLOSED LOOP CONTROL (1.6L Models only) Overall Function Test- Start engine and wrm to operation temperature. Using voltmeter, measure voltage between PCM harness connector terminal No. 46 (positive lead) and No. 43 (negative lead) by backprobing connector. Monitor voltmeter with engine at 2000 rpm. Voltage should be less than .23 volts at least once and more than .61 volts at least once. Code P0130, P0133, P0134: Front heated Oxygen Sensor checks are similar checks covered under P1148. This information is from the 1998 Mitchell's Imported Manual.

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