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Engine-Codes – Generic – P0608

P0608 Code - Vehicle Speed Output Circuit

Quick Answer

The P0608 diagnostic trouble code (DTC) refers to a fault in the vehicle speed output circuit. Common causes include Damaged wiring or connectors, Faulty speed sensor, Malfunctioning ECM. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0608 indicates Vehicle Speed Output Circuit.
Common causes
Common causes include Damaged wiring or connectors, Faulty speed sensor, Malfunctioning ECM.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0608 Description

The P0608 diagnostic trouble code (DTC) refers to a fault in the vehicle speed output circuit. This code is typically found in vehicles with automatic transmissions and can have a significant impact on the vehicle's overall performance. The vehicle speed output circuit plays a crucial role in providing the engine control module (ECM) with accurate information about the vehicle's speed. This information is essential for various systems in the vehicle, including the transmission, cruise control, and ABS.

OBDII Code P0608 - Vehicle Speed Output Circuit
P0608 Code - Vehicle Speed Output Circuit

Common Causes of P0608

  1. Damaged wiring or connectors
  2. Faulty speed sensor
  3. Malfunctioning ECM
  4. Corrosion in the circuit
  5. Loose connections

Symptoms of P0608

  1. Erratic shifting patterns
  2. Hesitation during acceleration
  3. Stalling
  4. Malfunctioning speedometer
  5. Inaccurate speed readings

How to Fix P0608

  1. Begin by conducting a thorough visual inspection of the vehicle speed output circuit, checking for any visible damage to wiring or connectors.
  2. Test the speed sensor using a multimeter to determine if it is functioning correctly. Replace the sensor if necessary.
  3. Check the ECM for any signs of damage or malfunction. If the ECM is faulty, it may need to be reprogrammed or replaced.
  4. Inspect the circuit for corrosion or loose connections, and repair or replace any damaged components as needed.
  5. Clear the DTC from the vehicle's ECM using an OBD-II scanner, and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0608

The cost of repairing a P0608 DTC can vary depending on the specific cause of the issue and the extent of the damage. In general, the repair costs for this code can range from $150 to $500, including parts and labor. It's important to note that the actual cost may be higher or lower depending on the location of the repair shop, the make and model of the vehicle, and the type of engine. Additionally, the diagnosis time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

When is the Code Detected?

If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing the P0608 to set.

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Code P0608 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0608 Code

No Frequently Asked Questions about P0608 Code found.

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  • how much does this cost for the part?

    Reply to Comment

  • The P0608 means that there is a problem with the control module vehicle speed sensor, but it doesn't say exactly what part is defective. You have to do some test to find what is the exact problem and find the defective part. The price for the parts depends on the make, model and year of your vehicle.

    Reply to Comment