AutoCodes – Toyota – C1420 Toyota

C1420 Toyota Code - Acceleration Sensor Malfunction

Quick Answer

The Skid Control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. Common causes include Faulty Yaw Rate Sensor (Built-In Acceleration Sensor), Yaw Rate Sensor harness is open or shorted, Yaw Rate 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: C1420 Toyota indicates Acceleration Sensor Malfunction.
Common causes: Common causes include Faulty Yaw Rate Sensor (Built-In Acceleration Sensor), Yaw Rate Sensor harness is open or shorted, Yaw Rate 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 5,043

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 Sep 28, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1420 Toyota Description

The Skid Control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits. The Skid Control ECU monitors the Acceleration Sensor. The Skid Control ECU sets the OBDII code when the Acceleration Sensor is not to factory specifications.

OBDII Code C1420 Toyota - Acceleration Sensor Malfunction - AutoCodes.com — C1420 Toyota Code - Acceleration Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC C1420 Toyota?

Faulty Yaw Rate Sensor (Built-In Acceleration Sensor)
Yaw Rate Sensor harness is open or shorted
Yaw Rate Sensor circuit poor electrical connection

How to Fix the DTC C1420 Toyota?

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 C1420 Toyota 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 C1420 Toyota code?

Need more information on how to fix the C1420 Toyota code? Get Access to Factory Service Manuals

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Get the C1420 Toyota code diagnosed by a professional: Find a repair shop in your area

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 C1420 Toyota Code

1. What are the common symptoms of OBDII code C1420 in a Toyota related to Acceleration Sensor Malfunction?

- Common symptoms include issues with acceleration, rough driving, and potential stability control system warning lights.

2. What causes the OBDII code C1420 related to Acceleration Sensor Malfunction in a Toyota?

- The code C1420 is often triggered by a malfunction in the acceleration sensor or issues with the sensor's wiring or connections.

3. Can driving with the OBDII code C1420 present in a Toyota be dangerous?

- Driving with the code C1420 may lead to reduced acceleration response and stability control system issues, potentially affecting the vehicle's overall safety.

4. How can I diagnose the OBDII code C1420 Acceleration Sensor Malfunction in my Toyota?

- Proper diagnostics with an OBDII scanner is necessary to confirm the code C1420 and pinpoint the specific cause within the acceleration sensor system.

5. Is it possible to repair the OBDII code C1420 Acceleration Sensor Malfunction issue in a Toyota at home?

- While basic checks like inspecting sensor connections can be done at home, more complex repairs may require professional assistance to ensure proper resolution.

6. What are some recommended repair tips for addressing the OBDII code C1420 in a Toyota?

- Repair tips include checking and cleaning sensor connections, inspecting for damaged wiring, and consulting a mechanic for thorough diagnostics and repairs.

7. How urgent is it to address the OBDII code C1420 Acceleration Sensor Malfunction in a Toyota?

- It is advisable to address the issue promptly to prevent potential safety risks and further damage to the vehicle's acceleration and stability systems.

8. Can resetting the OBDII code C1420 in a Toyota fix the Acceleration Sensor Malfunction issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Acceleration Sensor Malfunction.

9. Are there any common related codes or issues that may accompany OBDII code C1420 in a Toyota?

- Other related codes may include issues with the vehicle's stability control system or additional sensor malfunctions that can impact acceleration and driving performance.

10. Should I continue driving my Toyota if the OBDII code C1420 related to Acceleration Sensor Malfunction appears?

- It is recommended to limit driving and seek professional assistance to diagnose and repair the underlying cause of the code C1420 to ensure safe vehicle operation.