A common culprit is the sensor that measures gas pressure before it reaches the turbine. If this sensor reports static or incorrect values, the ECU triggers 148E22.
Diagnostic data suggests that this code is rarely caused by a total failure of a major component like the turbocharger itself, but rather by the sensors monitoring it. renault 148e22
Use a diagnostic tool (like Launch or CLIP) to graph the Upstream Turbine Pressure against Engine RPM . If the pressure doesn't rise and fall in sync with the RPM, there is a confirmed blockage or sensor failure. A common culprit is the sensor that measures
If cleaning the tubes doesn't work, the pressure sensor itself may be faulty. Automotive experts on YouTube recommend using genuine Renault sensors rather than aftermarket alternatives to ensure the ECU accepts the signal. Use a diagnostic tool (like Launch or CLIP)
A jammed or fouled EGR valve can disrupt the expected gas flow, leading to this specific "flux" error. How to Fix Code 148E22
Repairing this fault often involves cleaning rather than expensive parts replacement.