P2228

DTC P2228: BARO Sensor Circuit Low Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Turn the ignition switch ON (II).
2. Check the BARO SENSOR in the DATA LIST with the HDS.

Is about 53 kPa (15.6 in.Hg, 397 mmHg), or 1.58 V or less indicated?

YES - Go to step 3.

NO - Intermittent failure, the system is OK at this time.

3. Update the ECM if it does not have the latest software, or substitute a known-good ECM.
4. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P2228 indicated?

YES - Check for poor connections or loose terminals at the ECM. If the ECM was updated, substitute a known-good ECM. then recheck. If the ECM was substituted, go to step 1.

NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.