C1277 Lexus 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 Lexus 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.
Code C1277 Lexus Description
What are the Possible Causes of the DTC C1277 Lexus?
- 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 Lexus?
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 Lexus 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.
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Frequently Asked Questions about C1277 Lexus Code
1. What does the OBDII code C1277 mean on a Lexus?
The C1277 code indicates an "Abnormal Change in Output Signal of Rear Speed Sensor Right," meaning the rear right wheel speed sensor is sending irregular or unexpected signals.
2. What are the common symptoms of the C1277 code on a Lexus?
Common symptoms include the ABS light turning on, traction control being disabled, erratic speedometer readings, and reduced braking performance in slippery conditions.
3. What causes the C1277 code to appear in a Lexus?
Causes include a faulty rear right wheel speed sensor, damaged wiring or connectors, debris or corrosion on the sensor, or issues with the ABS module.
4. Can I still drive my Lexus with the C1277 code?
Yes, you can drive the vehicle, but ABS and traction control may not function properly, compromising safety in slippery or emergency braking situations.
5. How can I diagnose the C1277 code on my Lexus?
Inspect the rear right wheel speed sensor, wiring, and connector for damage or corrosion. Use an OBDII scanner to confirm the code and monitor speed sensor data for irregularities.
6. How do you fix the C1277 code on a Lexus?
Repairs might include cleaning or replacing the rear right wheel speed sensor, repairing or replacing damaged wiring, or recalibrating the ABS system.
7. How much does it cost to fix the C1277 code on a Lexus?
The cost varies based on the issue, but replacing a wheel speed sensor typically costs $100–$300, including parts and labor.
8. Can a dirty wheel hub cause the C1277 code on a Lexus?
Yes, debris or dirt on the wheel hub can interfere with the speed sensor’s readings, potentially triggering the C1277 code.
9. Will resetting the C1277 code solve the problem?
No, resetting the code without addressing the underlying issue will likely result in the code reappearing.
10. Does the C1277 code affect other systems in my Lexus?
Yes, this code can disable ABS and traction control systems, which are critical for safe driving in adverse conditions.
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