C1271 Code - Low Output Signal of Front Right Speed Sensor
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 Front Speed Sensor Right, Front Speed Sensor Right Rotor (Front Axle Hub Sub-Assembly Right), Front 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
- C1271 indicates Low Output Signal of Front Right Speed Sensor.
- Common causes
- Common causes include Faulty Front Speed Sensor Right, Front Speed Sensor Right Rotor (Front Axle Hub Sub-Assembly Right), Front 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 C1271 Description
What are the Possible Causes of the DTC C1271?
- Faulty Front Speed Sensor Right
- Front Speed Sensor Right Rotor (Front Axle Hub Sub-Assembly Right)
- Front Speed Sensor Right harness is open or shorted
- Front Speed Sensor Right circuit poor electrical connection
How to Fix the DTC C1271?
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
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1271 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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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
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