Vehicle Questions and Answers
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The most common reason for a Nissan Navara D40's speedometer not working is usually due to a problem with the vehicle speed sensor (VSS) or a malfunctioning engine control unit (ECU). Replacing the VSS for the D40 is relatively inexpensive, with the VIAS Control Solenoid Valve, part number 149558J10A, available for just $15 on Amazon. The process involves disconnecting it from the wiring harness, removing the securing bolt, and replacing it with the new one. If the ECU is faulty, repairs can be costly and typically come with other noticeable issues, although it's less common than speedometer problems. If the VSS is functioning properly, the next step would be to inspect the speedometer itself.
The speedometer in your Nissan Navara D40 may malfunction because of issues with the speed sensors, a damaged gear in the speedometer, faulty wiring, or a problem with the engine control unit.