DTC Troubleshooting

DTC Troubleshooting: P2227

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 Initial Inspection and Diagnostic Overview.
- 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), or press the engine start/stop button to select the ON mode, 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 15.

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 coolant temperature (ECT SENSOR 1) above 158 °F (70 °C)
- Transmission in D
- Throttle position between 13 and 26 degrees for at least 3 seconds

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 8.

NO -

Go to step 15.

8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

9. Reset the PCM with the HDS.

10. Do the PCM idle learn procedure PCM Idle Learn Procedure.

11. 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.

12. Test-drive under these conditions:

- Engine coolant temperature (ECT SENSOR 1) above 158 °F (70 °C)
- Transmission in D
- Throttle position between 13 and 26 degrees for at least 3 seconds

13. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2227 indicated?

YES -

Check for poor connections or loose terminals at the PCM, then go to step 1.

NO -

Go to step 14.

14. Monitor the OBD STATUS for DTC P2227 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 13, go to the indicated DTC's troubleshooting.

NO -

If the HDS indicates FAILED, check for poor connections or loose terminals at the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 11.

15. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.

16. 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.

17. Test-drive under these conditions:

- Engine coolant temperature (ECT SENSOR 1) above 158 °F (70 °C)
- Transmission in D
- Throttle position between 13 and 26 degrees for at least 3 seconds

18. 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, then go to step 16. If the PCM was substituted, go to step 1.

NO -

Go to step 19.

19. 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 Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 18, go to the indicated DTC's troubleshooting.

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, then go to step 16. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, go to step 16.