P0234 TURBO BOOST LIMIT EXCEEDED

When Monitored and Set Condition:

When Monitored: While running.
Set Condition: The intake air pressure is above a calibrated value for a calibrated amount of time.

POSSIBLE CAUSES

• OTHER DTC'S
• WASTEGATE STUCK

DIAGNOSTIC PROCEDURE

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

1. Turn the ignition on. With the DRBIII®, read the Engine DTC's. Do you have additional Boost Pressure related faults?
   Yes --> Repair other boost related DTC's first.
   No --> Go To 2
2. Turn the ignition on. With the DRBIII®, go to the Freeze Frame screen record all data. With the DRBIII®, read DTCs. Operate the vehicle in the Freeze Frame parameters. Did the DTC P-0234 return?
   Yes --> Replace the Wastegate.
   No --> Test Complete.