Volvo XC90 enters limp mode while driving, smoking issue potentially linked to engine and turbo replacement on Volvo XC90

Some Volvo XC90 owners report experiencing limp mode issues while driving, which can be linked to various factors such as electrical failures, sensor problems, or Engine Control Unit (ECU) malfunctions. A common indicator of this situation is the "Reduced Engine Performance" message displayed on the dashboard. Additionally, some owners notice white smoke coming from the exhaust, suggesting potential turbo or engine problems, including oil leakage. Identifying the root cause of the limp mode is crucial for effective resolution, and using an OBD scanner to retrieve trouble codes can assist in diagnosing the specific issue. In some instances, problems with the turbo control valve may lead to excessive boost pressure, triggering limp mode during acceleration. It is recommended that affected owners consult a qualified mechanic or Volvo specialist for accurate diagnosis and resolution of these issues.