DTC P2227: BARO Sensor Circuit Range/Performance Problem
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the genera) 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.
- Turn the ignition switch to ON (II), and wait 2 seconds.
- 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 7.
- Clear the DTC with the HDS.
- 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.
- Test-drive under these conditions:
- 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.
- Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
- 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.
- Test-drive under these conditions:
- Check for Temporary DTCs or 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 ), then go to step 8. If the ECM/PCM was substituted, go to step 1.
NO -Go to step 11.
- 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 (see ECM/PCM REPLACEMENT ). If any other Temporary DTCs or DTCs were indicated in step 10, go to the indicated DTCs 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 ), then go to step 8. If the ECM/PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 8.