C1420 Lexus Code - Acceleration Sensor Malfunction
Quick Answer
The Skid Control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system. Common causes include Faulty Yaw Rate Sensor (Built-In Acceleration Sensor), Yaw Rate Sensor harness is open or shorted, Yaw Rate Sensor 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
- C1420 Lexus indicates Acceleration Sensor Malfunction.
- Common causes
- Common causes include Faulty Yaw Rate Sensor (Built-In Acceleration Sensor), Yaw Rate Sensor harness is open or shorted, Yaw Rate Sensor 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 C1420 Lexus Description
What are the Possible Causes of the DTC C1420 Lexus?
- Faulty Yaw Rate Sensor (Built-In Acceleration Sensor)
- Yaw Rate Sensor harness is open or shorted
- Yaw Rate Sensor circuit poor electrical connection
How to Fix the DTC C1420 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1420 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 C1420 Lexus Code
1. What does the OBDII code C1420 mean on a Lexus?
C1420 indicates an "Acceleration Sensor Malfunction," meaning the vehicle's stability control system has detected an issue with the acceleration sensor or its related circuitry.
2. What are the common symptoms of the C1420 code in a Lexus?
Common symptoms include the ABS or traction control warning light illuminated, reduced stability control performance, and possible handling issues during acceleration or braking.
3. What causes the C1420 code to be triggered?
The code can be caused by a faulty acceleration sensor, damaged wiring or connectors, calibration issues, or problems with the ABS control module.
4. Can I drive my Lexus with the C1420 code active?
While the vehicle may still be drivable, stability and traction control systems may not function properly, increasing the risk of losing control in certain driving conditions.
5. How do I diagnose the C1420 code on a Lexus?
Diagnosis typically involves using a diagnostic scan tool to check for additional codes, inspecting the acceleration sensor and its wiring for damage, and verifying the sensor’s calibration.
6. Where is the acceleration sensor located in a Lexus?
The acceleration sensor is often located near the center console, under the dashboard, or integrated into the ABS module. Refer to the vehicle's service manual for the exact location.
7. How do you fix the C1420 code on a Lexus?
Repairs may include replacing the faulty acceleration sensor, repairing damaged wiring or connectors, or recalibrating the sensor using specialized diagnostic equipment.
8. Does the C1420 code require sensor recalibration after repairs?
Yes, after replacing or repairing the acceleration sensor, recalibration using a scan tool is usually necessary to ensure proper system operation.
9. How much does it cost to fix the C1420 code on a Lexus?
The cost can vary depending on the exact cause. Replacing an acceleration sensor typically costs $200–$400, including parts and labor, while wiring repairs may cost less.
10. Can a dead battery cause the C1420 code in a Lexus?
A dead or weak battery can sometimes cause sensor malfunctions or calibration issues, potentially triggering the C1420 code. Check the battery voltage as part of the diagnosis.
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