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P0234 Diagnostic Trouble Code Discussion for October 2011

Turbocharger Engine Overboost

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Trouble Ticket Help Requests for DTC P0234
Help Request Posted
2003 Chevrolet Silverado 2500 HD 6.6L engine smoke VIN: 1GCHK23173
P0234: Engine Overboost. ... with a 6.6 duramax that smokes bad at idle in drive and smoke goes away around 1800 rpm. In park it doesn't smoke at all. Put it in drive at idle and it will start smoking badly. When the engine is cold, it doesn't smoke at all in park or in drive. The eng...
October 24, 2011