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DTC P032: Open Map Sensor: Action

  1. PCM turns on the "SERVICE ENGINE SOON" MIL.
  2. PCM disables long term fuel trim.
  3. PCM uses a substitute MAP value based on engine RPM and throttle position switch status.
  4. PCM disables evaporative emission control solenoid.
  5. PCM disables torque management.
  6. Transaxle shift adapts are maintained at current values.
NOTE: Numbers in list refer to circled numbers in diagnostic flow chart, see Fig 1. For circuit identification see Fig 2.
  1. If MAP sensor or circuitry are open, PD02 will read 10-16 kPa.
  2. Checking if circuitry from sensor to PCM is able to respond to a 5 volt signal on MAP input. A reading of 102-105 means wiring and PCM are OK.
  3. Checking for a short to ground on CKT 432 or an open in CKT 432, CKT 474 or in the MAP sensor.
  4. Checking for CKT 432 shorted to ground.
  5. Checking if 5 volt signal is reaching the PCM. If signal is present, replace PCM.
Fig 1: DTC P032: Open MAP Sensor Flow Chart
G00118437Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P032: Open MAP Sensor Flow Chart Circuit
G00118436Courtesy of GENERAL MOTORS CORP.