P0299 L200 mitsubishi a Turbocharger/Supercharger "A" Underboost condition model 2020 How to fix

12 A P0299 code on a 2023 Mitsubishi L200 indicates a Turbocharger/Supercharger "A" Underboost Condition. This means the engine control unit (ECU) has detected that the turbocharger is not producing enough air pressure compared to the expected target, resulting in low power, poor acceleration, and likely "limp mode". MB Services Yorkshire MB Services Yorkshire +4 Given that it is a 2023 model, it is likely under warranty, so immediate professional diagnostic is recommended to prevent long-term engine damage. Common Causes for L200 P0299 Boost Leaks (Most Common): Split, torn, or loose intercooler hoses (hoses between turbo, intercooler, and intake). Turbocharger Wastegate Issues: The wastegate actuator may be malfunctioning, or the wastegate itself is stuck open, causing exhaust gases to bypass the turbine. Vacuum System Issues: A leak in the vacuum lines controlling the turbocharger or a faulty vacuum pump.