Renault 148e22 Now

When appearing as a diagnostic trouble code (DTC), typically relates to the turbocharger function .

With the ignition on but the engine off, the upstream pressure should roughly match atmospheric pressure. renault 148e22

By the late 90s, plastics were not as resistant as they are today. The engine bay wiring harness can become brittle. Look for electrical gremlins: intermittent wipers, failing dash lights, or erratic fuel gauges. When appearing as a diagnostic trouble code (DTC),

If the sensor must be replaced, technicians use the identifier failing dash lights

For official "papers" or guides, you can consult these platforms: Renault User Manuals: