What is Engine Overboost condition?
Service engine code P0234 means engine Overboost condition. It happens due to several reasons and mechanical failures that need to be fixed immediately the code is displayed. P0234 is displayed when the engine control module senses intake boost pressure more than 4 psi longer than 5 seconds. Causes of P0234 Error Code ▪ Damaged or clogged supercharger/turbocharger wastegate ▪ Clogged wastegate control valve solenoid ▪ Blocked wastegate control hose which results in poor detection of boost pressure Symptoms of Overboost pressure ▪ Check engine light flashes repeatedly and some systems display P0234 error code ▪ Faulty engine seals or head gaskets ▪ Damaged seal or gasket due to excessive boost pressure inside the engine Diagnosis and fixing of engine Overboost pressure condition ▪ Reviewing the data collected by the engine control module ▪ Resetting the code to check w