DTC Troubleshooting: P2228 (13-5)

DTC P2228:  BARO Sensor Circuit Low Voltage

1.Turn the ignition switch ON (II).

2.Check the BARO SENSOR in the DATA LIST with the HDS.

Is about 2.2 V or less indicated?

YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.n

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