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DTC P2227: BARO Sensor Circuit Range/Performance Problem Acura TL IV facelift

Testing & Diagnostics ~762 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), or press the engine start/stop button to select the ON mode, and wait 2 seconds.
  2. Check the BARO SENSOR in the DATA LIST with the HDS. Is about 101 kPa (29.9 inHg, 760 mmHg), or about 2.9 V at sea level indicated? YES - Go to step 3. NO - Go to step 15 .
  3. Clear the DTC with the HDS.
  4. Start the engine. Hold the engine speed at 3, 000 RPM without load (A/T in P or N, M/T in neutral) 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) A/T in D, or M/T in 4th Throttle position between 16 and 31 degrees for at least 3 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 8. NO - Go to step 15 .
  8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  9. Reset the ECM/PCM with the HDS.
  10. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-512362-S04299387872012103100000) ).
  11. Start the engine. Hold the engine speed at 3, 000 RPM without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
  12. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) A/T in D, or M/T in 4th Throttle position between 16 and 31 degrees for at least 3 seconds
  13. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2227 indicated? YES - Check for poor connections or loose terminals at the ECM/PCM, then go to step 1 . NO - Go to step 14.
  14. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated instep 13, go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, check for poor connections or loose terminals at the ECM/PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 11 .
  15. Update the «ECM/PCM»(ref-512332-S15795428962012103100000) if it does not have the latest software (see «ECM/PCM Update»(ref-512332-S15795428962012103100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-512356-S00793962012012103100000) ).
  16. Start the engine. Hold the engine speed at 3, 000 RPM without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
  17. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) A/T in D, or M/T in 4th Throttle position between 16 and 31 degrees for at least 3 seconds
  18. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2227 indicated? YES - Check for poor connections or loose terminals at the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-512356-S00793962012012103100000) ), then go to step 16 . If the ECM/PCM was substituted, go to step 1 . NO - Go to step 19.
  19. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original «ECM/PCM»(ref-512332-S08907075282012103100000) (see «ECM/PCM Replacement»(ref-512332-S08907075282012103100000) ). If any other Pending or Confirmed DTCs were indicated instep 18, go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, check for poor connections or loose terminals at the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-512356-S00793962012012103100000) ), then go to step 16 . If the ECM/PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 16 .

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