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Home >> Acura >> 2007 >> RL >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> DTC Troubleshooting >> DTC P2227: BARO Sensor Circuit Range/Performance Problem

DTC P2227: BARO Sensor Circuit Range/Performance Problem

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 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  - Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM (see PCM REPLACEMENT  )

  3. Clear the DTC with the HDS.
  4. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or 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)
    • Transmission in D position
    • Throttle position between 14 degrees and 45 degrees for 2 seconds
  6. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS.

    Does the screen indicate PASSED? 

    YES  - Intermittent failure, the system is OK at this time

    NO  - If the screen indicates FAILED, go to step 7. If the screen indicates NOT COMPLETED, go to step  4.

  7. Update the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
  8. Reset the PCM with the HDS.
  9. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
  10. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  11. Test-drive under these conditions:
    • Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C)
    • Transmission in D position
    • Throttle position between 14 degrees and 45 degrees for 2 seconds
  12. Check for Temporary DTCs or DTCs with the HDS.

    Is DTC P2227 indicated? 

    YES  - If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then go to step  10. If the PCM was substituted, go to step  1.

    NO  - Go to step 13.

  13. 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  ). If any other Temporary DTCs or DTCs were indicated in step  12, go to the indicated DTCs 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 ), then go to step  10. If the PCM was substituted, go to step  1. If the screen indicates NOT COMPLETED, go to step  10.

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