Circuit/System Verification

Verify that DTCs P0411, P0412, P0418, P0690, P2440, or P2444 are not set
- If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Ignition ON, engine OFF, verify that the AIR Pressure Sensor parameter is within 3 kPa of the BARO parameter.
- If not the specified range, verify that the BARO parameter is correct for your altitude. Refer to Altitude Versus Barometric Pressure . If the BARO parameter is not correct for your altitude, refer to DTC P0106 .
Engine running, command the AIR pump relay ON while observing the AIR Pressure Sensor parameter. The reading should be 15-22 kPa above the BARO reading
Engine running, command the AIR system ON while observing the AIR Pressure Sensor parameter. The reading should be 8-15 kPa above BARO.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.