Corroded connectors or damaged wiring looms can lead to high voltage readings or signal loss, which the ECU interprets as a system fault.
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. renault 148e22
The small tubes connecting the engine to the pressure sensor often become blocked with carbon soot . A leak in the rubber portion of these tubes is also a frequent point of failure. Corroded connectors or damaged wiring looms can lead
The code is a specific Renault Diagnostic Trouble Code (DTC) that indicates a fault in the engine management system, primarily related to gas flow or pressure within the Exhaust Gas Recirculation (EGR) and turbocharging systems . This error is frequently encountered in modern Renault diesel and turbo-petrol engines, such as the 1.5 dCi and 1.0 TCe . Understanding the 148E22 Fault Code The small tubes connecting the engine to the
Repairing this fault often involves cleaning rather than expensive parts replacement.