Renault 148e22 Jun 2026

: In many Renault Megane IV and Clio models, this code points to a gas leak from the EGR system

When this code is triggered, the car's computer enters "limp mode," resulting in several noticeable symptoms:

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When this error triggers, it means the Engine Control Unit (ECU) has detected a massive discrepancy between what the boost/exhaust pressure should be and what the sensors are actually reporting. Because the turbocharger behavior is tightly interwoven with the Exhaust Gas Recirculation (EGR) system to meet strict emissions standards, a failure in one system immediately triggers fault codes in the other. Common Companion Codes renault 148e22

: The ECU will disable or severely restrict turbocharger boost to protect the engine. The car will feel incredibly sluggish, struggling to accelerate past highway speeds or climb hills.

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Both series shared the same "Club of Four" cab, but the M-Series often featured different chassis reinforcements and more powerful engine options. : In many Renault Megane IV and Clio

Drivers encountering this error will typically notice immediate performance changes:

Modern Renault dCi engines utilize an exhaust gas pressure sensor located behind the EGR valve near the firewall (motor shield). This sensor is connected to the exhaust/EGR pipe via a small rubber or silicone tube. Over time, exposure to intense exhaust heat and vibration causes this rubber tube to harden, crack, or completely tear open. This creates an exhaust gas leak, throwing off all pressure calculations. 2. Clogged Pressure Sensor Metal Pipe

Clio 5 (1.0 TCe) or Master, often appearing alongside other turbo-related codes like Boost Pressure Leaks: Because the turbocharger behavior is tightly interwoven with

Repairing this fault often involves cleaning rather than expensive parts replacement.

This code is notoriously associated with exhaust pressure monitoring and is frequently linked to a faulty sensor or a clogged pipe within the Emission Gas Recirculation (EGR) and Diesel Particulate Filter (DPF) system. Understanding this fault is crucial for restoring your vehicle’s performance and preventing more severe engine issues. What is the Renault 148E22 Code?

: Exhaust gas pressure sensor circuit range/performance fault.