P0608 Fault Code

Control Module VSS Output A Malfunction

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0608 fault code indicates a malfunction related to the Vehicle Speed Sensor (VSS) output A from the control module. This could signify that the engine control unit (ECU) is receiving incorrect or no signals from the VSS, which may affect the vehicle's performance, particularly in terms of speed monitoring and transmission behavior.

What are the symptoms of the P0608 code?

• Inaccurate speed readings on the dashboard - Erratic or harsh shifting of the transmission - Check Engine Light (CEL) illuminated - Potential decrease in fuel efficiency - Engaging limp mode in some cases

What causes the P0608 code?

• Faulty vehicle speed sensor (VSS) - Damaged wiring or connectors related to the VSS - Issues with the ECU or control module - Problems with the transmission control module (TCM) - Corrosion or shorts in the sensor circuit

How to fix P0608?

• Inspect the vehicle speed sensor for damage or wear. - Check and repair any faulty wiring or connectors. - If the VSS is faulty, replace it with a new sensor. - Clear the fault codes and test the vehicle to ensure the issue is resolved. - If the problem persists, further diagnostics may be needed on the ECU or TCM.