DTC P2227: BARO Sensor Circuit Range/Performance Problem Acura RDX I facelift

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 inHg, 760 mmHg), or about 2.9 V at sea level indicated? YES -Go to step 3. NO -Go to step 7 .
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 speed above 1, 750 RPM Transmission in D REL TP SENSOR above 22 deg Drive 5 seconds or more
6. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS. Does the HDS indicate FAILED? YES -Go to step 7. NO -If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, go to step 4 and recheck.
7. Check the intake air system for clogging or 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-513833-S16680197442012111600000) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(ref-513832-S05425928872012111600000) ).
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-id rive under these conditions: Engine speed above 1, 750 RPM Transmission in D RE L TP SENSOR above 22 deg Drive 5 seconds or more
11. Check for Pending or Confirmed 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-513832-S05425928872012111600000) ), 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 HDS indicate PASSED? YES -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(ref-513833-S05585841922012111600000) ). If any other Pending or Confirmed DTCs were indicated in step 11 , go to the indicated «DTCS TROUBLESHOOTING»(ref-513833-S32692288912012111600000) . NO -If the HDS 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-513832-S05425928872012111600000) ), then go to step 9 . If the PCM was substituted, go to step 1 . If the HDS indicates NOT COMPLETED, go to step 9 .