What Does P0234 Mean? The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions. When you see P0234 engine fault code on your engine code reader this description will help you. engine code P0234P0234 fixobd P0234dtc P0234obd code P0234obd2 P0234P0234 car codediagnostic code P0234car code P0234check engine code P0234fehlercode P0234P0234 fiatcodigo P0234codigo falla P0234P0234 kody b??dówcodigo de falla P0234 What are the common causes of P0234 ? The turbocharger/supercharger wastegate is damaged or sticking The wastegate control valve solenoid is sticking The wastegate control hose is getting blocked and the boost pressure cannot be relieved quickly enough How do you troubleshoot P0234 ? Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Process Tips Diagnostic trouble code P0234 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise. Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P0234. Fortunately, P0234 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996. Searches related to P0234 - Turbocharger/Supercharger 'A' Overboost Condition p0234 ford ecoboost p0234 cummins p0234 volvo p0234 vw tdi p0234 ford focus 1.6 tdci turbo overboost causes p0234 duramax p0234 chevy cruze