DTC Troubleshooting

DTC Troubleshooting: 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 Initial Inspection and Diagnostic Overview.
- Check the label on the PCM to see if it was made by Keihin or Continental. Refer to the General Troubleshooting Information for more details Initial Inspection and Diagnostic Overview.

1. Turn the ignition switch to ON (II).

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

Is about 43 kPa (12.7 inHg, 323 mmHg), or 1.31 V or less indicated? (Keihin PCM) Is about 35 kPa (10.3 inHg, 263 mmHg), or 1.08 V or less indicated? (Continental PCM)

YES -

Go to step 3.

NO -

Intermittent failure, the system is OK at this time.

3. Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM.

4. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P2228 indicated?

YES -

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

NO -

If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.