Renault 148e22 Page

Corroded connectors or damaged wiring looms can lead to high voltage readings or signal loss, which the ECU interprets as a system fault.

Inspect the rubber hoses for cracks or leaks. For metal tubes, carbon buildup can be removed using DPF cleaning fluid and a mechanical wire to break up the soot. renault 148e22

A jammed or fouled EGR valve can disrupt the expected gas flow, leading to this specific "flux" error. How to Fix Code 148E22 Corroded connectors or damaged wiring looms can lead

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 jammed or fouled EGR valve can disrupt

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.