AutoCodes – Generic – C1A45

C1A45 Code - Vehicle Speed Sensor

Quick Answer

The blind spot monitor sensor receives vehicle speed signals from the brake actuator assembly via Controller Area Network (CAN) communication. Common causes include Faulty Vehicle stability control system, Faulty Left Blind Spot Monitor Sensor, Faulty Right Blind Spot Monitor Sensor. 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: C1A45 indicates Vehicle Speed Sensor.
Common causes: Common causes include Faulty Vehicle stability control system, Faulty Left Blind Spot Monitor Sensor, Faulty Right Blind Spot Monitor Sensor.
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 5,225

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 Mar 01, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1A45 Description

The blind spot monitor sensor receives vehicle speed signals from the brake actuator assembly via Controller Area Network (CAN) communication. The Diagnostic Trouble Code (DTC) will be set when a failure flag is transmitted from the brake actuator assembly.

OBDII Code C1A45 - Vehicle Speed Sensor - AutoCodes.com — C1A45 Code - Vehicle Speed Sensor

What does this mean?

What are the Possible Causes of the DTC C1A45?

Faulty Vehicle stability control system
Faulty Left Blind Spot Monitor Sensor
Faulty Right Blind Spot Monitor Sensor

How to Fix the DTC C1A45?

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 C1A45 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 C1A45 code?

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Need Help with the Code?

Get the C1A45 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1A45 Lexus — Vehicle Speed Sensor
C1A45 Toyota — Vehicle Speed Sensor

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 C1A45 Code

1. What are the common symptoms of OBDII code C1A45 related to the Vehicle Speed Sensor?

- Common symptoms include erratic speedometer readings, cruise control not working properly, and the vehicle going into limp mode.

2. What are the typical causes of OBDII code C1A45 indicating an issue with the Vehicle Speed Sensor?

- The most common causes include a faulty speed sensor, damaged wiring or connectors, or issues with the sensor's mounting position.

3. How can I diagnose the Vehicle Speed Sensor issue causing OBDII code C1A45?

- You can diagnose the problem by checking the sensor's wiring and connectors for damage, testing the sensor's output with a multimeter, and ensuring the sensor is properly mounted.

4. What are some repair tips for fixing the Vehicle Speed Sensor problem associated with OBDII code C1A45?

- Repair tips include replacing the faulty speed sensor, repairing any damaged wiring or connectors, and ensuring the sensor is correctly installed and aligned.

5. Can a malfunctioning Vehicle Speed Sensor leading to OBDII code C1A45 affect the vehicle's performance?

- Yes, a faulty speed sensor can impact the vehicle's performance by causing issues with the transmission shifting, speedometer accuracy, and cruise control functionality.

6. Are there any safety concerns associated with ignoring OBDII code C1A45 related to the Vehicle Speed Sensor?

- Ignoring the code can lead to inaccurate speed readings, which may affect your ability to drive safely and can trigger other warning lights or systems in the vehicle.

7. Is it possible to reset OBDII code C1A45 related to the Vehicle Speed Sensor without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause to prevent further issues and ensure proper vehicle operation.

8. Can a DIY enthusiast replace the Vehicle Speed Sensor to resolve OBDII code C1A45, or is it best left to professionals?

- Replacing the speed sensor can be a DIY task for those with mechanical skills and the necessary tools. However, if unsure, it is best to seek assistance from a professional mechanic.

9. How much can I expect to pay for parts and labor to fix OBDII code C1A45 related to the Vehicle Speed Sensor?

- The cost can vary depending on the vehicle make and model, but typically, the parts for a speed sensor replacement range from $50 to $150, with additional labor costs for installation.

10. Are there any recalls or technical service bulletins related to OBDII code C1A45 and the Vehicle Speed Sensor?

- It is advisable to check with the vehicle manufacturer or authorized service centers for any recalls or technical service bulletins related to this specific OBDII code and speed sensor issues.