P0033 - Chevrolet Diagnostic Trouble Code (DTC) Definition ...

Home ChevroletP0033 Chevrolet Chevrolet DTC P0033 Make: Chevrolet Code: P0033 Definition: BARO Out-Of-Range at Key On / MAP Sensor Low Description: Key on for less than 350 ms; engine speed less than 255 rpm, and the PCM detected the MAP Sensor input was less than 2.196v but more than 0.019v during a 300 ms period Cause:
  • Loss of 5-volt supply from PCM (internal failure)
  • Sensor 5-volt supply circuit is shorted, open or grounded
  • Sensor signal circuit is open or shorted to ground
  • Sensor has failed
  • PCM has failed

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