High intake manifold pressure reading; ECU logs boost sensor fault; possible derate.

Safety: Disable auto-start before removing any intake components.

• Locate sensor: The boost pressure sensor is usually mounted on the intake manifold or charge air pipe.
• Inspect port and connector: Remove the sensor and check for oil or soot blocking the port. Clean gently if needed. Inspect connector pins for corrosion and reseat.
• Check wiring: Using a multimeter, verify there is no short between signal wire and supply voltage or ground. Repair damaged wiring.
• Replace sensor: If wiring is good and readings remain implausible, install a new Volvo Penta boost pressure sensor.