AutoCodes – Toyota – C1277 2017 Toyota RAV4

C1277 2017 Toyota RAV4 Code - Abnormal Change in Output Signal of Rear Speed Sensor Right

Quick Answer

The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU (Brake Actuator Assembly). Common causes include Faulty Rear Speed Sensor Right, Rear Speed Sensor Right Rotor (Rear Axle Hub and Bearing Assembly Right), Rear Speed Sensor Right harness is open or shorted. 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
C1277 2017 Toyota RAV4 indicates Abnormal Change in Output Signal of Rear Speed Sensor Right.
Common causes
Common causes include Faulty Rear Speed Sensor Right, Rear Speed Sensor Right Rotor (Rear Axle Hub and Bearing Assembly Right), Rear Speed Sensor Right harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 223
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 21, 2024
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Code C1277 2017 Toyota RAV4 Description

The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU (Brake Actuator Assembly). These signals are used for Anti-Lock Brake System (ABS) control. Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn. Each speed sensor detects that magnetic change and sends a pulse signal to the Skid Control ECU (Brake Actuator Assembly).
OBDII Code C1277 2017 Toyota RAV4 - Abnormal Change in Output Signal of Rear Speed Sensor Right - AutoCodes.com
C1277 2017 Toyota RAV4 Code - Abnormal Change in Output Signal of Rear Speed Sensor Right

What are the Possible Causes of the DTC C1277 2017 Toyota RAV4?

  • Faulty Rear Speed Sensor Right
  • Rear Speed Sensor Right Rotor (Rear Axle Hub and Bearing Assembly Right)
  • Rear Speed Sensor Right harness is open or shorted
  • Rear Speed Sensor Right circuit poor electrical connection

How to Fix the DTC C1277 2017 Toyota RAV4?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1277 2017 Toyota RAV4 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 C1277 2017 Toyota RAV4 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 C1277 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code C1277 in a 2017 Toyota RAV4?

The common symptoms of OBDII code C1277 include issues with the ABS system, traction control system, and stability control system. You may also experience problems with the vehicle's braking performance.

2. What does the OBDII code C1277 indicate in a 2017 Toyota RAV4?

OBDII code C1277 in a 2017 Toyota RAV4 indicates an abnormal change in the output signal of the rear speed sensor located on the right side of the vehicle.

3. What are the possible causes of OBDII code C1277 in a 2017 Toyota RAV4?

Possible causes of OBDII code C1277 include a faulty rear speed sensor on the right side, damaged wiring or connectors related to the sensor, or issues with the ABS control module.

4. How can I diagnose the OBDII code C1277 in my 2017 Toyota RAV4?

Diagnosing OBDII code C1277 involves performing a visual inspection of the rear speed sensor and its wiring, checking the sensor's resistance, and using a scan tool to monitor the sensor's output while driving the vehicle.

5. Can I continue driving my 2017 Toyota RAV4 with OBDII code C1277?

It is not recommended to continue driving your 2017 Toyota RAV4 with OBDII code C1277, as it can affect the vehicle's safety systems like ABS and traction control, potentially compromising your safety on the road.

6. How can I repair OBDII code C1277 in my 2017 Toyota RAV4?

Repairing OBDII code C1277 typically involves replacing the faulty rear speed sensor on the right side, repairing or replacing damaged wiring or connectors, and clearing the code with a diagnostic scan tool.

7. Is it possible to reset OBDII code C1277 in a 2017 Toyota RAV4 without fixing the underlying issue?

While you can clear the code temporarily with a scan tool, it will likely reappear if the root cause of the issue, such as a faulty rear speed sensor, is not addressed.

8. Can extreme weather conditions trigger OBDII code C1277 in a 2017 Toyota RAV4?

Extreme weather conditions like heavy rain, snow, or extreme temperatures can potentially affect the rear speed sensor's performance and trigger OBDII code C1277 in a 2017 Toyota RAV4.

9. How much does it typically cost to repair OBDII code C1277 in a 2017 Toyota RAV4?

The cost of repairing OBDII code C1277 in a 2017 Toyota RAV4 can vary depending on the extent of the issue, but it may involve parts and labor costs ranging from $200 to $500 or more.

10. Can a DIY enthusiast with mechanical knowledge fix OBDII code C1277 in a 2017 Toyota RAV4?

While some aspects of diagnosing and repairing OBDII code C1277 may be within reach of a DIY enthusiast, it is recommended to seek professional help to ensure the issue is properly diagnosed and repaired to avoid further complications.

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