AutoCodes – Scion – C1571 Scion

C1571 Scion Code - Vehicle Speed Signal Malfunction

Quick Answer

The Power Steering ECU receives vehicle speed signals from the Skid Control ECU via CAN communication. Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1571 Scion indicates Vehicle Speed Signal Malfunction.
Common causes: Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 764

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1571 Scion Description

The Power Steering ECU receives vehicle speed signals from the Skid Control ECU via CAN communication. The ECU provides appropriate assisting force in accordance with the vehicle speed, based on the signals. If the ECU detects this Diagnostic Trouble Code (DTC), it adjusts the amount of power assistance for a speed of 100 km/h (62 mph) and continues the system control. The Power Steering ECU monitors the Vehicle Speed Signal. The Power Steering ECU sets the OBDII code when the Vehicle Speed Signal is not to factory specifications.

OBDII Code C1571 Scion - Vehicle Speed Signal Malfunction - AutoCodes.com — C1571 Scion Code - Vehicle Speed Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC C1571 Scion?

Faulty Vehicle Speed Sensor
Vehicle Speed Sensor harness is open or shorted
Vehicle Speed Sensor circuit poor electrical connection
Faulty Skid Control ECU
Faulty Power Steering ECU

How to Fix the DTC C1571 Scion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1571 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1571 Scion code?

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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 C1571 Scion Code

1. What are the common symptoms of OBDII code C1571 in a Scion related to vehicle speed signal malfunction?

- Common symptoms include erratic speedometer readings, cruise control issues, and the vehicle going into limp mode.

2. What are the possible causes of OBDII code C1571 in a Scion?

- The code C1571 can be triggered by issues with the vehicle speed sensor, wiring or connector problems, or a faulty ABS module.

3. How can I diagnose the cause of OBDII code C1571 in my Scion?

- Diagnosis typically involves checking the vehicle speed sensor for proper operation, inspecting the wiring for damage, and scanning the ABS module for any related faults.

4. Can a faulty ABS module cause OBDII code C1571 in a Scion?

- Yes, a malfunctioning ABS module can disrupt the vehicle speed signal and trigger the C1571 code in a Scion.

5. What are some repair tips for resolving OBDII code C1571 in a Scion?

- Repair tips include checking and repairing any damaged wiring, replacing the vehicle speed sensor if faulty, and addressing any issues with the ABS module.

6. Is it safe to continue driving my Scion with OBDII code C1571 related to a vehicle speed signal malfunction?

- It is not recommended to drive the vehicle with this code, as it can lead to inaccurate speed readings and potential safety hazards.

7. How much does it typically cost to repair OBDII code C1571 in a Scion?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

8. Can I reset the OBDII code C1571 in my Scion by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is not a permanent solution as the underlying issue causing the code will still need to be addressed.

9. Will OBDII code C1571 in a Scion cause the vehicle to fail emissions testing?

- Yes, the C1571 code can cause the vehicle to fail emissions testing, as it indicates a malfunction related to the vehicle speed signal.

10. Can a DIY enthusiast repair OBDII code C1571 in a Scion, or should it be done by a professional mechanic?

- While some basic checks and repairs can be done by a DIY enthusiast, diagnosing and fixing the root cause of the C1571 code may require professional mechanic expertise and specialized tools.