DTC Troubleshooting

DTC Troubleshooting: P1233 (171), P1234 (171)

DTC P1233:

Turbocharger Boost Sensor/BARO Sensor Incorrect Correlation

DTC P1234:

Turbocharger Boost Sensor/MAP Sensor Incorrect Correlation

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- If DTC P1233 is indicated alone, do the troubleshooting for DTC P0236 and P2227 using freeze data from P1233. If DTC P1234 is indicated alone, do the troubleshooting for DTC P0236, P1128, and P1129 using freeze data from P1234.
- If any of the DTCs listed below are indicated at the same time as DTC P1233 and/or P1234, troubleshoot those DTCs first, then recheck for P1233 and/or P1234.
P0236: Turbocharger boost sensor
P1128, P1129: MAP sensor
P2227: BARO sensor