DTC P1106: BARO Sensor Range/Performance Problem (2000-2003 models); DTC P2227: BARO Sensor Range/Performance Problem (2004-2005 models)

NOTE:

Information marked with an asterisk (*) applies to 2000-2003 models.
Information marked with double asterisk (**) applies to 2004-2005 models.
Before you troubleshoot, record all freeze data and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Reset the ECM (see HOW TO RESET THE ECM ).
Start the engine. Hold the engine speed at 3,000 RPM without load (in neutral) until the radiator fan comes on, then let it idle.
Test-drive with the transmission in 4th gear.
Accelerate for 5 seconds using wide open throttle.
Check for a Temporary DTC with a scan tool or the HDS.
Is Temporary DTC P1106* (P2227)** indicated?
1. YES - Substitute a known-good ECM (see HOW TO SUBSTITUTE THE ECM FOR TESTING PURPOSES ) and recheck. If the symptom/indication goes away, replace the original ECM (see ECM REPLACEMENT ).
2. NO - Intermittent failure, system is OK at this time.