DTC Troubleshooting

DTC P2227: BARO Sensor Range/Performance Problem

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the 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 for 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 Vat sea level indicated?

YES - Go to step 3.

NO - Update the PCM if it does not have the latest software, or substitute a known good PCM, then recheck. If the symptom/indication goes away with a known good PCM, replace the original PCM.

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° and 45° 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, or substitute a known good PCM.
8. Reset the PCM with the HDS.
9. Do the 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° and 45° 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, 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. If any other Temporary DTCs or DTCs were indicated in step 12, Go to the indicated DTC's 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, then Go to step 10. If the PCM was substituted, Go to step 1. If the screen indicates NOT COMPLETED, Go to step 10.