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P0234 Diagnostic Trouble Code Discussion for July 2007

Turbocharger Engine Overboost

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Trouble Ticket Help Requests for DTC P0234
Help Request Posted
2000 Volvo S40 1.9L Hesitation VIN: YV1VS2556Y
P0234: Turbo Overboost Condition. Very intermittent problem. Code P0234 Turbo overboost. Freeze Frame Data Calculated Load 78% Coolant Temp 134 F. STFT 0.0% LTFT -15.6% Intake 32.7 in/hg RPM 4100 Possible manifold sensor or air mass sensor, have not come across this before on the S40, cust st...
July 02, 2007