C1272 Code - Low Output Signal of Front Left 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 Left, Front Speed Sensor Left Rotor (Front Axle Hub Sub-Assembly Left), Front Speed Sensor Left 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
- C1272 indicates Low Output Signal of Front Left Speed Sensor.
- Common causes
- Common causes include Faulty Front Speed Sensor Left, Front Speed Sensor Left Rotor (Front Axle Hub Sub-Assembly Left), Front Speed Sensor Left 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 C1272 Description
What are the Possible Causes of the DTC C1272?
- Faulty Front Speed Sensor Left
- Front Speed Sensor Left Rotor (Front Axle Hub Sub-Assembly Left)
- Front Speed Sensor Left harness is open or shorted
- Front Speed Sensor Left circuit poor electrical connection
How to Fix the DTC C1272?
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 C1272 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 C1272 code?
Need more information on how to fix the C1272 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1272 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C1272 Buick — Left Front TCS Prime Valve Malfunction
- C1272 Cadillac — Left Front TCS Prime Valve Malfunction
- C1272 Chevrolet — Left Front TCS Prime Valve Malfunction
- C1272 GMC — Left Front TCS Prime Valve Malfunction
- C1272 Hyundai — Engine Speed Input Malfunction
- C1272 KIA — Engine Speed Input Malfunction
- C1272 Lexus — Low Output Signal of Front Left Speed Sensor
- C1272 Pontiac — Left Front TCS Prime Valve Malfunction
- C1272 Scion — Low Output Signal of Front Left Speed Sensor
- C1272 Toyota — Low Output Signal of Front Left Speed Sensor
Frequently Asked Questions about C1272 Code
1. What are the common symptoms of OBDII code C1272 (Low Output Signal of Front Left Speed Sensor)?
- Common symptoms include ABS warning light illuminated on the dashboard, traction control system malfunctions, and inaccurate speedometer readings.
2. What can cause the OBDII code C1272 to trigger?
- The code C1272 is typically triggered by a faulty front left speed sensor, damaged wiring or connectors, or issues with the sensor's magnetic ring.
3. How can I diagnose the OBDII code C1272 related to the front left speed sensor?
- Diagnosing this code involves inspecting the front left speed sensor and its wiring for any visible damage, testing the sensor's output signal, and checking the sensor's magnetic ring for debris or damage.
4. Can a dirty or contaminated front left speed sensor cause the C1272 code?
- Yes, dirt, debris, or contamination on the front left speed sensor can disrupt its signal output, potentially triggering the C1272 code.
5. What are some repair tips for addressing the OBDII code C1272?
- Repair tips include cleaning the front left speed sensor and its surroundings, checking and repairing any damaged wiring or connectors, and replacing the speed sensor if necessary.
6. Is it safe to continue driving with the OBDII code C1272 (Low Output Signal of Front Left Speed Sensor)?
- It is not recommended to drive with this code present, as it can affect the proper functioning of the ABS and traction control systems, compromising vehicle safety.
7. Can other factors, such as wheel bearing issues, trigger the C1272 code?
- Yes, issues with the wheel bearing near the front left speed sensor can sometimes cause erratic sensor readings and trigger the C1272 code.
8. How important is it to address the OBDII code C1272 promptly?
- It is important to address the C1272 code promptly to ensure the proper functioning of the vehicle's ABS and traction control systems, as well as to maintain accurate speed readings.
9. Are there any common DIY fixes for the OBDII code C1272 before seeking professional help?
- DIY fixes may include cleaning the speed sensor and its connections, checking for loose or damaged wiring, and ensuring the sensor's magnetic ring is intact.
10. Can weather conditions, such as extreme cold or heat, affect the performance of the front left speed sensor and trigger the C1272 code?
- Extreme weather conditions can potentially affect the performance of the speed sensor and contribute to triggering the C1272 code.
Discuss the causes and fixes for C1272 OBDII Code
Code C1272 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.
