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Home >> Oldsmobile >> 1989 >> Cutlass Calais Base, 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 2.3L PFI Tests W/Codes >> Diagnosis & Testing >> Code 25, Mat Sensor Signal Volt Low >> Notes

Code 25, Mat Sensor Signal Volt Low: Notes

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Code 25 will set only if signal voltage indicates manifold air temperature greater than about 318°F (159°C) and if vehicle speed is greater than 15 MPH.
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