C1243 Toyota Code - Acceleration Sensor Stuck Malfunction
Quick Answer
The Skid Control ECU (Brake Actuator Assembly) receives signals from the Yaw Rate Sensor and Acceleration Sensor (Airbag Sensor Assembly) via the Controller Area Network (CAN) communication system. Common causes include Acceleration Sensor Calibration, Faulty Yaw Rate Sensor and Acceleration Sensor (Airbag Sensor Assembly), Airbag Sensor Assembly 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
- C1243 Toyota indicates Acceleration Sensor Stuck Malfunction.
- Common causes
- Common causes include Acceleration Sensor Calibration, Faulty Yaw Rate Sensor and Acceleration Sensor (Airbag Sensor Assembly), Airbag Sensor Assembly 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 C1243 Toyota Description
The Airbag Sensor Assembly has a built-in Yaw Rate Sensor and Acceleration Sensor and detects the vehicle's condition.
If there is trouble in the bus lines between the Yaw Rate Sensor and Acceleration Sensor (Airbag Sensor Assembly) and the CAN communication system, the Diagnostic Trouble Code (DTC) U0124 (malfunction in CAN communication with the acceleration sensor) is output.
These DTCs are also output when calibration has not been completed.
What are the Possible Causes of the DTC C1243 Toyota?
- Acceleration Sensor Calibration
- Faulty Yaw Rate Sensor and Acceleration Sensor (Airbag Sensor Assembly)
- Airbag Sensor Assembly harness is open or shorted
- Airbag Sensor Assembly circuit poor electrical connection
How to Fix the DTC C1243 Toyota?
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 C1243 Toyota 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 C1243 Toyota code?
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Need Help with the Code?
Get the C1243 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- C1243 2013 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
- C1243 2014 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
- C1243 2015 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
- C1243 2016 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
- C1243 2017 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
- C1243 2018 Toyota RAV4 — Acceleration Sensor Stuck Malfunction
Frequently Asked Questions about C1243 Toyota Code
1. What are the common symptoms of OBDII code C1243 Toyota (Acceleration Sensor Stuck Malfunction)?
- Common symptoms include the vehicle going into "limp mode," reduced acceleration, and the traction control light illuminating on the dashboard.
2. What causes the OBDII code C1243 Toyota to trigger?
- The code C1243 is typically triggered by a malfunction in the acceleration sensor, which may be caused by wiring issues, sensor failure, or a problem with the sensor's circuit.
3. How can I diagnose the Acceleration Sensor Stuck Malfunction associated with code C1243 on a Toyota?
- Diagnosing this issue usually involves checking the wiring connections to the acceleration sensor, testing the sensor's functionality, and inspecting the sensor's circuit for any faults.
4. Can I continue driving my Toyota with OBDII code C1243?
- It is not recommended to drive your vehicle with the C1243 code present, as it can affect the vehicle's performance and safety. It's best to address the issue promptly.
5. How can I repair the Acceleration Sensor Stuck Malfunction causing OBDII code C1243 on my Toyota?
- Repairing this issue may involve replacing the faulty acceleration sensor, repairing any damaged wiring, or addressing issues with the sensor's circuit as needed.
6. Is it safe to reset the OBDII code C1243 and continue driving without addressing the underlying issue?
- Resetting the code without addressing the underlying issue is not recommended, as the problem may persist and potentially lead to further complications or safety concerns.
7. Can a DIY enthusiast fix the Acceleration Sensor Stuck Malfunction causing OBDII code C1243?
- While some basic diagnostic steps can be performed by a DIY enthusiast, fixing the underlying issue may require professional expertise due to the complexity of the sensor and its circuit.
8. How much does it typically cost to repair the Acceleration Sensor Stuck Malfunction associated with code C1243 on a Toyota?
- The cost of repair can vary depending on the extent of the issue, the need for parts replacement, and labor costs. It's advisable to consult a mechanic for a more accurate estimate.
9. Are there any preventive measures to avoid triggering OBDII code C1243 in a Toyota?
- Regular maintenance and inspections can help prevent issues that may lead to the triggering of code C1243, such as ensuring proper wiring connections and addressing any sensor-related concerns promptly.
10. Is the Acceleration Sensor Stuck Malfunction a common problem in Toyota vehicles?
- While not extremely common, issues related to the acceleration sensor can occur in Toyota vehicles, leading to the triggering of OBDII code C1243.
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