DTC P2227: BARO Sensor Circuit Range/Performance Problem
NOTE:
- If DTC P0122, P0123, P1121, P1122, P0107, P0108, P1128, and/or P1129 are stored at the same time as DTC P2227, troubleshoot those DTCs first, then recheck for DTC P2227.
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
- Inspect the air cleaner element (see
AIR CLEANER REMOVAL/INSTALLATION
).
Is there damage or clogging?
- YES- Replace the air cleaner element (see AIR CLEANER ELEMENT INSPECTION/REPLACEMENT ). Clear the DTC with the HDS, then go to step 10.
- NO- Go to step 2.
- Turn the ignition switch ON (II), and wait 2 seconds.
- Check the BARO SENSOR in the DATA LIST with the HDS.
Is it about 101 kPa (29.9 in.Hg, 760 mmHg), or about 2.9 V at sea level?
- YES- Go to step 4.
- NO- Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see MAP SENSOR REPLACEMENT ).
- Clear the DTC with the HDS.
- 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.
- Test-drive under these conditions:
- ECT SENSOR above 176°F (80°C)
- A/T in D position (M/T in 4th gear)
- TP SENSOR between 15° and 33° For 3 seconds
- Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
- Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING ).
- Reset the ECM/PCM with the HDS.
- Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
- Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
- YES- If DTC P2227 is indicated, check for poor connections or loose terminals at the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting .
- NO- If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see MAP SENSOR REPLACEMENT ).