L400 A/T Speed sensor (Left side)
L400 A/T Speed sensor (Left side)
Mitsubishi Delica L400 A/T Speed Sensor (Left Side)
Product Name: L400 A/T Speed Sensor (Left Side)
Application: Mitsubishi Delica L400 – Automatic Transmission
Engine Compatibility: 4M40 (2.8L Diesel) & select 6G72 petrol models (confirm by VIN)
🔧 Function
The left-side automatic transmission speed sensor monitors transmission output/input shaft speed and sends data to the ECU/TCU. This signal is critical for:
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Proper gear shifting
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Accurate speedometer operation
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Torque converter lock-up
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Preventing transmission limp mode
⚠️ Common Symptoms of Failure
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Harsh or delayed shifting
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Speedometer not working or fluctuating
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Transmission stuck in 2nd/3rd gear (limp mode)
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Check Engine Light
📍 Location
Mounted on the left side of the automatic transmission housing (driver side on RHD models).
Accessible from underneath the vehicle.
🛠️ Installation Notes
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Disconnect battery before replacement
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Inspect wiring plug for corrosion or damage
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Lightly oil O-ring before installing
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Torque to manufacturer specification (do not overtighten)

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Due to the nature of these complex parts we have a "final sale" policy on all items. However, we do take into account every returns request on a case-by-case basis. In order to avoid incorrect purchases, we recommend double-checking your vehicle information or contacting us for assistance before ordering. Returned parts must be in new, unused condition, and restocking fees may apply for certain items.
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L400 A/T Speed sensor (Left side)