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DTC P1103: MAF Sensor Inconsistent With Engine Speed (More Than Expected): Testing

NOTE: Ensure freeze frame data has been recorded. Check for service bulletins and on-line information.
  1. Using scan tool, access PID/DATA MONITOR. Record PID data for ECT, TP and MAF. Warm engine until ECT PID is more than 176°F. Check MAF PID while engine speed is less than 2000 RPM. If MAF PID is more than 13.6 lbs. min., go to next step. If MAF PID is less than 13.6 lbs. min., problem is not present. Go to TROUBLE SHOOTING - NO CODES article.
  2. Turn ignition off. Disconnect MAF sensor connector. Check connector and terminals. If no problem is found, go to next step. If any problem is found, repair or replace as necessary. After repair, go to step  4 .
  3. Disconnect PCM connector. PCM is mounted to passenger floor, behind glove box. Check connector and terminals. If no problem is found, go to next step. If any problem is found, repair or replace as necessary. After repairs, go to next step.
  4. Reconnect all components. Turn ignition on. Using scan tool, clear DTC. Warm engine until ECT PID is more than 176°F. Ensure MAF PID is less than 13.6 lbs. min. and engine speed is less than 2000 RPM. Recheck pending DTCs. If DTC P1103 is pending, replace PCM and go to next step. If DTC P1103 is not pending, go to next step.
  5. Perform after repair procedure. See AFTER REPAIR PROCEDURE  . If no DTC is present, testing is complete. If any DTC is present, go to appropriate test for diagnosis and repair.
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