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), and wait 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 V at sea level indicated?
YES - Go to step 3.
NO - Reconnect all connectors, then update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM, Initial Inspection and Diagnostic Overview then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM. Service and Repair
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 17 degrees and 33 degrees for 3 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 5.
7. Check the condition of the air cleaner element.
Is the air cleaner element OK?
YES - Go to step 8.
NO - Replace the air cleaner element. Service and Repair
8. Reconnect all connectors, then update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Initial Inspection and Diagnostic Overview
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 Park or neutral) 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 position
- Throttle position between 17 degrees and 33 degrees for 3 seconds
13. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2227 indicated?
YES - If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then go to step 11. If the PCM was substituted, 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 screen indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. PCM Idle Learn Procedure If any other Temporary DTCs or DTCs were indicated in step 13, 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, Initial Inspection and Diagnostic Overview then go to step 11. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 11.