C1381 2018 Toyota RAV4 Code - Acceleration Sensor Power Supply Voltage Malfunction
Quick Answer
The Skid Control ECU (Brake Actuator Assembly) receives signals from the Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly) via the Controller Area Network (CAN) communication system. Common causes include Acceleration Sensor Calibration, Faulty Acceleration Sensor (Airbag Sensor Assembly), Acceleration Sensor 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
- C1381 2018 Toyota RAV4 indicates Acceleration Sensor Power Supply Voltage Malfunction.
- Common causes
- Common causes include Acceleration Sensor Calibration, Faulty Acceleration Sensor (Airbag Sensor Assembly), Acceleration Sensor 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 C1381 2018 Toyota RAV4 Description
If there is trouble in the bus lines between the Acceleration Sensor (Airbag Sensor Assembly) and the CAN communication system, the DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) is output.
This Diagnostic Trouble Code (DTC) is also output when calibration has not been completed.
What are the Possible Causes of the DTC C1381 2018 Toyota RAV4?
- Acceleration Sensor Calibration
- Faulty Acceleration Sensor (Airbag Sensor Assembly)
- Acceleration Sensor harness is open or shorted
- Acceleration Sensor circuit poor electrical connection
How to Fix the DTC C1381 2018 Toyota RAV4?
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 C1381 2018 Toyota RAV4 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 C1381 2018 Toyota RAV4 code?
Need more information on how to fix the C1381 2018 Toyota RAV4 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1381 2018 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C1381 2018 Toyota RAV4 Code
What does OBDII code C1381 mean on a 2018 Toyota RAV4?
Code C1381 indicates an "Acceleration Sensor Power Supply Voltage Malfunction," meaning there's an issue with the power supply to the acceleration sensor.
What are the common symptoms of code C1381 in a 2018 Toyota RAV4?
Symptoms can include the ABS or traction control warning lights illuminating, reduced stability control function, or inconsistent braking performance.
What causes code C1381 to appear on a 2018 Toyota RAV4?
Common causes include a faulty acceleration sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the ABS control module.
Can I still drive my 2018 Toyota RAV4 with code C1381?
While the vehicle may still be drivable, safety systems like ABS or traction control may not function properly, increasing the risk of losing control in slippery conditions.
How do I diagnose code C1381 on a 2018 Toyota RAV4?
Start by inspecting the wiring and connectors for damage or loose connections, then test the acceleration sensor and power supply circuit with a multimeter.
Is replacing the acceleration sensor the only fix for code C1381?
Not always. The issue could be caused by damaged wiring, a poor connection, or a malfunctioning ABS control module, so a thorough diagnosis is essential.
How much does it cost to repair code C1381 on a 2018 Toyota RAV4?
Repair costs can vary depending on the cause. Replacing an acceleration sensor may cost $200–$500, while fixing wiring or connectors could be less expensive.
Can a weak battery cause code C1381 on my 2018 Toyota RAV4?
Yes, a weak or low-voltage battery can sometimes trigger voltage-related codes, including C1381, so it's worth checking the battery's health.
Does code C1381 require recalibration after repairs?
Yes, if the acceleration sensor is replaced or repaired, the system may require recalibration using a diagnostic tool to ensure proper functioning.
Can clearing the code fix C1381 on a 2018 Toyota RAV4?
Clearing the code without addressing the root cause will not fix the issue, and the code is likely to return. Proper diagnosis and repair are necessary.
Discuss the causes and fixes for C1381 2018 Toyota RAV4 OBDII Code
Code C1381 2018 Toyota RAV4 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.
