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P0234 Diagnostic Trouble Code Discussion for October 2014

Turbocharger Engine Overboost

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Trouble Ticket Help Requests for DTC P0234
Help Request Posted
2008 Chevrolet HHR SS 2.0L Surge, Cuts out, Over Boost VIN: 3GNDA63X08
P0234: Turbocharger Overboost. We have a 2008 HHR SS with a 2.0 Turbo. On decent accel the turbo puts out 25 psi of boost on the factory gauge, 275kpa on my scan tool. The wastegate solenoid PID is showing 95% when it act up. There is not a lot of info on this motor in Alldata. I suspe...
October 15, 2014