C1271 Code - Low Output Signal of Front Right Speed Sensor
Quick Answer
The C1271 code indicates that there is a low output signal coming from the front right speed sensor in the vehicle's anti-lock braking system (ABS). Common causes include Faulty front right speed sensor, Damaged or corroded wiring/connectors leading to the sensor, Issues with the ABS control module. 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
- C1271 indicates Low Output Signal of Front Right Speed Sensor.
- Common causes
- Common causes include Faulty front right speed sensor, Damaged or corroded wiring/connectors leading to the sensor, Issues with the ABS control module.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C1271 Description
The C1271 code indicates that there is a low output signal coming from the front right speed sensor in the vehicle's anti-lock braking system (ABS). The speed sensor is responsible for measuring the speed of the wheel and sending this information to the ABS control module. When the output signal is low, it can lead to issues with the ABS system, affecting the vehicle's ability to properly control braking and traction. This can result in compromised safety and performance while driving.
Common Causes of C1271
- Faulty front right speed sensor
- Damaged or corroded wiring/connectors leading to the sensor
- Issues with the ABS control module
- Wheel bearing failure affecting sensor performance
- Sensor misalignment or contamination
Symptoms of C1271
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Erratic braking behavior, such as locking up or skidding
- Uneven braking pressure between wheels
- Increased stopping distance
How to Fix C1271
- Begin by diagnosing the specific cause of the low output signal, which may involve using a scan tool to read the ABS system's live data.
- Inspect the front right speed sensor for any visible damage or contamination, cleaning or replacing it as necessary.
- Check the wiring and connectors for any signs of damage or corrosion, repairing or replacing them as needed.
- Test the ABS control module for proper functionality and replace if deemed faulty.
- Perform a road test to ensure the issue has been resolved and the ABS system is functioning correctly.
Cost to Fix C1271
The cost of repairing a low output signal from the front right speed sensor can vary depending on the specific cause of the issue. On average, the parts for this repair can range from $50 to $200, while the labor costs can be between $100 and $300. Additional costs may apply if other components need to be replaced or if specialized diagnostic equipment is required. It's recommended to consult with a professional mechanic for an accurate cost estimate based on your vehicle's make and model.
Tech Notes for C1271
If there is iron powder sticking to the rotor, this will result in a malfunction, so confirm that the rotor is not contaminated with foreign material before replacing the sensor.
Check the speed sensor signal after cleaning or replacement.
On most vehicles, the Front Speed Sensor Rotor is incorporated into the Front Axle Hub Sub-Assembly. If the Speed Sensor Rotor needs to be replaced, replace it together with the Front Axle Hub Sub-Assembly.
Need more information about the C1271 code?
Need more information on how to fix the C1271 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1271 code diagnosed by a professional: Find a repair shop in your area
Code C1271 Information for Specific Makes
- C1271 Buick — Left Front TCS Master Cylinder Isolation Valve Malfunction
- C1271 Cadillac — Left Front TCS Master Cylinder Isolation Valve Malfunction
- C1271 Chevrolet — Left Front TCS Master Cylinder Isolation Valve Malfunction
- C1271 GMC — Left Front TCS Master Cylinder Isolation Valve Malfunction
- C1271 Lexus — Low Output Signal of Front Right Speed Sensor
- C1271 Pontiac — Left Front TCS Master Cylinder Isolation Valve Malfunction
- C1271 Scion — Low Output Signal of Front Right Speed Sensor
- C1271 Toyota — Low Output Signal of Front Right Speed Sensor
Frequently Asked Questions about C1271 Code
What does OBDII code C1271 mean?
OBDII code C1271 indicates a low output signal from the front right speed sensor, which is responsible for monitoring wheel speed for the vehicle's traction control and anti-lock braking systems.
What symptoms might I experience with code C1271?
Common symptoms include the illumination of the check engine light, erratic or non-functioning speedometer readings, and potential issues with traction control or anti-lock braking performance.
What could cause the C1271 code to trigger?
Causes may include a faulty front right speed sensor, damaged wiring or connectors, a malfunctioning ABS control module, or issues with the vehicle's brake system.
How can I diagnose the C1271 code?
To diagnose C1271, visually inspect the front right speed sensor and its wiring for damage, use a multimeter to check the sensor's output, and perform a scan with an OBDII scanner to check for related codes.
What is the average cost to repair the C1271 code?
Repair costs can vary widely but typically range from $100 to $400, depending on whether the speed sensor needs to be replaced or if there are more extensive wiring or module issues.
Can I drive my vehicle with code C1271?
While it may be possible to drive a vehicle with code C1271, it is not recommended as it can affect braking performance and vehicle stability systems, potentially leading to unsafe driving conditions.
What repairs are commonly needed for code C1271?
Common repairs include replacing the front right speed sensor, repairing or replacing damaged wiring or connectors, and addressing any issues with the ABS module.
How do I clear the C1271 code after repairs?
You can clear the C1271 code using an OBDII scanner by selecting the option to erase codes, or by disconnecting the vehicle's battery for a short period, although the latter method may reset other systems as well.
Will replacing the speed sensor always fix the C1271 code?
Not necessarily; while replacing the speed sensor is a common fix, if there are underlying issues like wiring problems or a faulty ABS module, those issues will also need to be addressed to fully resolve the code.
Discuss the causes and fixes for C1271 OBDII Code
Code C1271 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.