MAP/Barometric Pressure Circuit High Input
Was bedeutet das?
Code P0108 indicates the MAP sensor is sending an abnormally high voltage to the PCM, suggesting lower vacuum than expected.
Haftungsausschluss: Dieser Diagnosecode ist Teil des OBD2-Standards und gilt für Mercedes-benz G-class Modelle von 1996 bis 2026. Bitte beachten Sie jedoch, dass dies von der genauen Motorkonfiguration abhängt.
Häufige Ursachen
Defekter MAP-Sensor (Saugrohrdrucksensor)
Beschädigter oder gebrochener Kabelbaum
Korrodierter oder loser Steckverbinder
Vakuumleck im Ansaugsystem
Zu beachtende Symptome
- Motorkontrollleuchte leuchtet
- Unruhiger oder instabiler Leerlauf
- Erhöhter Kraftstoffverbrauch
- Schlechte Beschleunigung oder träge Reaktion
Wie man diagnostiziert
Häufige Lösungen
**Replace the Manifold Absolute Pressure (MAP) Sensor:** If diagnostic steps confirm the sensor itself is faulty, consistently sending an abnormally high voltage signal to the PCM, replacing it with a quality OEM or equivalent aftermarket sensor is the primary solution.
**Repair Vacuum Leaks:** Thoroughly inspect and repair any vacuum leaks found in the intake manifold, vacuum lines, PCV system components, or the brake booster. Even a small leak can significantly affect manifold vacuum, causing the MAP sensor to report higher pressure.
**Repair Wiring Harness or Connector:** Address any identified issues with the MAP sensor's electrical circuit, including repairing open circuits, shorts to voltage or ground, or replacing corroded/damaged connectors and terminals. Ensure all connections are clean, tight, and secure.
**Replace Powertrain Control Module (PCM):** In rare instances, after exhaustive testing confirms the MAP sensor, vacuum system, and wiring are all functioning correctly, the PCM itself may be faulty and unable to properly process the MAP sensor's input. This should be a last resort, as PCM replacement is costly and often requires reprogramming.