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HOMESERVICE MANUALSCHEVROLET1995CAVALIER LS, 4D SEDAN, 2.2 4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - TESTS W/CODES - 4.6L)PCM CODE CHARTSCODE P043, FRONT OXYGEN SENSOR RICH SIGNALACTION
1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4

Code P043, Front Oxygen Sensor Rich Signal: Action

1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4SECTION Action
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

PCM turns on MIL. PCM turns on canister purge solenoid if Code P045 is also set. Transaxle shift adapts are maintained at current levels.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. If Code P017 is present, diagnose this code first since an oxygen sensor not ready can cause other emission related problems.
  2. If oxygen sensor is operating correctly, voltage should fluctuate at less than 0.6 volt. A rich sensor condition will cause voltage to remain at greater than 0.6 volt.
  3. If voltage measured is less than one volt, PCM and circuit No. 412 are okay.
Fig 1: Code P043 Schematic, Front O2 Sensor Rich Signal
G94I32944Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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