C1412 Code - Rear Speed Sensor Left Performance
Quick Answer
The speed sensor detects the wheel speed and sends the appropriate signals to the Skid Control ECU. Common causes include Faulty Rear Speed Sensor Left, Rear Speed Sensor Left harness is open or shorted, Rear Speed Sensor Left circuit poor electrical connection. 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
- C1412 indicates Rear Speed Sensor Left Performance.
- Common causes
- Common causes include Faulty Rear Speed Sensor Left, Rear Speed Sensor Left harness is open or shorted, Rear Speed Sensor Left circuit poor electrical connection.
- 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 C1412 Description
What are the Possible Causes of the DTC C1412?
- Faulty Rear Speed Sensor Left
- Rear Speed Sensor Left harness is open or shorted
- Rear Speed Sensor Left circuit poor electrical connection
How to Fix the DTC C1412?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1412 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
- C1412 Lexus — Rear Speed Sensor Left Performance
- C1412 Scion — Rear Speed Sensor Left Performance
- C1412 Toyota — Rear Speed Sensor Left Performance
Frequently Asked Questions about C1412 Code
1. What does the OBDII code C1412 indicate?
The C1412 code signifies an issue with the left rear wheel speed sensor's performance, suggesting that the sensor might not be functioning correctly or the signal it is sending is outside the expected range.
2. What are common symptoms of code C1412?
Symptoms can include the ABS warning light illuminating on the dashboard, decreased anti-lock brake system functionality, possible traction control problems, and in some cases, the vehicle’s speedometer may malfunction.
3. What could cause the C1412 code to appear?
Possible causes include a faulty left rear wheel speed sensor, damaged wires or connectors associated with the sensor, or a problem with the wheel hub assembly that affects the sensor's ability to read wheel speed accurately.
4. How can I diagnose the issue related to code C1412?
Diagnosis should start with a visual inspection of the left rear wheel speed sensor and its connections for any obvious signs of damage or corrosion. Following that, using a scan tool, check the live data of the wheel speed sensors to compare their readings. A multimeter can be used to test the sensor's resistance and voltage.
5. What are some potential repairs for fixing code C1412?
Repairs can range from cleaning the sensor and the sensor ring from any dirt, debris, or corrosion, securing any loose connections, or replacing the left rear wheel speed sensor if found defective. In cases where wiring is damaged, repairing or replacing the affected wiring is necessary.
6. Can I drive my vehicle with the C1412 code active?
While you can technically still drive the vehicle, it's advisable to address the issue promptly as it affects the anti-lock braking system, which can compromise vehicle safety, particularly under harsh braking conditions or on slippery roads.
7. What tools are needed to confirm a diagnosis for code C1412?
To properly diagnose this issue, you would need a digital multimeter, a scan tool capable of reading ABS codes and viewing live data, and basic hand tools to access the sensor.
8. Are there any troubleshooting steps specifically for intermittent C1412 code issues?
For intermittent issues, it's important to check for loose connections or damaged wires at the sensor as these can cause sporadic faults. Also, check the sensor’s alignment and the condition of the sensor ring as any abnormalities in these can cause intermittent readings.
9. How does the left rear speed sensor impact vehicle performance when malfunctioning?
A malfunctioning left rear speed sensor can lead to inaccurate readings that affect the ABS and traction control systems, potentially leading to increased stopping distances, reduced braking effectiveness, and an increased risk of skidding during braking.
10. What preventive measures can be taken to avoid future issues with the left rear speed sensor?
Regular maintenance including cleaning of the wheel speed sensors, checking for and repairing any damaged wiring, and ensuring all sensor connections are secure can help prevent future issues with the left rear speed sensor.
Discuss the causes and fixes for C1412 OBDII Code
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