Peugeot automatic transmission multifunction sensor (MBVA)
The Multifunction Automatic Transmission Sensor (MBVA) is an electronic component in Peugeot automatic transmissions that performs several functions related to transmission control.
MBVA functions:
* Oil Pressure Sensor: Measures the oil pressure in the automatic transmission, which is necessary for smooth gear shifts and prevent damage to components.
*Oil Temperature Sensor: Measures the automatic transmission oil temperature, which is critical to protecting the transmission from overheating and extending its life.
* Shift Position Sensor: Detects the position of the gear selector, informing the transmission control module of the desired driving mode (P, R, N, D, etc.).
* Park (Neutral) Switch: Confirms that the vehicle is in Park or Neutral, allowing the steering shaft to unlock and preventing unintentional vehicle movement.
Location:
The location of the MBVA may vary depending on the specific Peugeot model and year of manufacture. However, it is usually installed inside the automatic transmission, either on the oil pan or on the transmission housing.
Malfunctions:
A malfunction of the MBVA can lead to various problems related to the operation of the automatic transmission, such as:
* Difficulty shifting gears
* Increased fuel consumption
* Automatic transmission overheating
* Transmission fault warning light comes on
Replacement:
If the MBVA malfunctions, it must be replaced with a new one to restore normal operation of the automatic transmission. Replacement usually requires dismantling and disassembling the automatic transmission. It is recommended that you leave this task to a qualified mechanic.