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DTC P1128: MAP Sensor Signal Lower Than Expected

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Turn the ignition switch ON (II).
  2. Check the MAP SENSOR in the DATA LIST with the HDS.

    Is 64.4 kPa (19.0 in.Hg, 483 mmHg) or more indicated? 

    1. YES  - Intermittent failure, system is OK at this time.
    2. NO  - Replace the MAP sensor.