
In many Renault diesel engines, such as the or 2.3 dCi , the upstream pressure sensor monitors the exhaust gas pressure before it reaches the turbocharger. The 148E22 code is frequently logged alongside related turbo codes like DTC 226322 (Turbo System Performance). The most common causes for this specific fault include:
The electronic or vacuum-operated valve that controls turbo boost may be sticking. renault 148e22