LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 1996 >> SLX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P0102 - MAF Sensor Circuit/Low Frequency
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0102 - MAF Sensor Circuit/Low Frequency

  1. Perform On-Board Diagnostic (OBD) System Check. See BASIC TESTING article. Go to next step.
  2. Start engine and allow it to reach normal operating temperature. With engine at idle, monitor MAF FREQUENCY parameter on scan tool. If display is less than 1000 Hz, go to next step. If display is 1000 Hz or greater, go to step 5).
  3. With ignition on and engine off, review and record FAILURE RECORDS data on scan tool. Operate vehicle within FAILURE RECORDS conditions. If DTC P0102 is set, go to next step. If DTC P0102 is not set, check for an intermittent problem. See TESTS W/O CODES article.
  4. Turn ignition off. Disconnect MAF sensor harness connector. Turn ignition on. Using a voltmeter, measure voltage between ground and MAF sensor signal circuit at connector. If reading is 5 volts, go to next step. If reading is not as specified, go to step 8).
  5. Using a test light, check for voltage between sensor ground circuit and voltage supply circuit at MAF sensor harness connector. If test light comes on, go to step 7). If test light does not come on, go to next step.
  6. Using a test light, check for voltage between ground and voltage supply circuit at MAF sensor connector. If test light comes on, go to step 11). If test light does not come on, go to step 12).
  7. Check for poor connection at MAF sensor. Repair as necessary. Retest system. If connections are okay, go to step 13).
  8. Turn ignition off. Disconnect PCM harness connector related to MAF sensor circuit. Turn ignition on. Using a voltmeter, measure voltage between ground and MAF signal terminal at PCM. If reading is less than 4 volts, go to next step. If reading is not as specified, go to step 10).
  9. Turn ignition off. Disconnect White PCM harness connector. Turn ignition on. Using a voltmeter, check MAF sensor signal circuit for short to voltage supply circuit. Repair as necessary. Retest system.
  10. Turn ignition off. Disconnect White PCM harness connector. Using an ohmmeter, check sensor signal circuit between MAF sensor harness connector and PCM for an open, short to ground or short to sensor ground circuit. Repair as necessary. Retest system. If wire is okay, go to step 13).
  11. Locate and repair open in sensor ground circuit between MAF sensor harness connector and PCM. Retest system.
  12. Locate and repair open in voltage supply circuit between MAF sensor harness connector and PCM. Retest system.
  13. Replace MAF sensor. Retest system. If DTC P0102 resets, replace PCM. Retest system.
scientia non olet · About LEMON Manuals