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DTC P2227: BARO Sensor Circuit Range/ Performance Problem Acura RL II facelift

Testing & Diagnostics ~514 words

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0107, P0108, P1128, and/or P1129 are stored at the same time as DTC P2227, troubleshoot those DTCs first, then recheck for DTC P2227.

  1. Turn the ignition switch to ON (II), and wait 2 seconds.
  2. Check the BARO SENSOR in the DATA LIST with the HDS. Is about 101 kPa (29.9 in.Hg, 760 mmHg), or about 2.9 V at sea level indicated? YES -Go to step 3. NO -Go to step 8 .
  3. Clear the DTC with the HDS.
  4. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  5. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Throttle position between 14 deg and 45 deg for at least 2 seconds
  6. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 7. NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 4 and recheck.
  7. Check the intake air system for clogging or the restrictions (foreign material, dirty air cleaner element, etc). Is the intake air system clogged or restricted? YES -Remove the clog or restriction, then go to step 9 . NO -Go to step 8.
  8. Update the PCM if it does not have the latest software (see «PCM UPDATE»(ref-348508-S21120732372009112400000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-348507-S19166854742009112400000) ).
  9. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
  10. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) Transmission in D Throttle position between 14 deg and 45 deg for at least 2 seconds
  11. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2227 indicated? YES -Check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-348507-S19166854742009112400000) ), then go to step 9 . If the PCM was substituted, go to step 1 . NO -Go to step 12.
  12. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(ref-348508-S08692035992009112400000) ). If any other Temporary DTCs or DTCs were indicated in step 11, go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-348507-S19166854742009112400000) ), then go to step 9 . If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 9 .

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