P1631 2014 Toyota RAV4 Code - Communication Error from ECM to VSC
Quick Answer
The Engine Control Module (ECM) sends signals such as A/T information signals, dynamic radar cruise control operation signals, and brake operation demand signals to the Skid Control Electronic Control Unit (ECU) (Brake Actuator Assembly) when the dynamic radar cruise control is operating. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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
- P1631 2014 Toyota RAV4 indicates Communication Error from ECM to VSC.
- Common causes
- Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 P1631 2014 Toyota RAV4 Description
While the vehicle speed is 40 km/h (25 mph) or more and the dynamic radar cruise control system is operating (vehicle-to-vehicle distance control mode), if the ECM continuously receives a logical error signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more the Diagnostic Trouble Code (DTC) will be set.
What are the Possible Causes of the DTC P1631 2014 Toyota RAV4?
- Faulty Skid Control ECU (Brake Actuator Assembly)
- Skid Control ECU harness is open or shorted
- Skid Control ECU circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1631 2014 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 P1631 2014 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 P1631 2014 Toyota RAV4 code?
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Frequently Asked Questions about P1631 2014 Toyota RAV4 Code
1. What does OBDII code P1631 in a 2014 Toyota RAV4 indicate?
The code P1631 signifies a communication error between the Engine Control Module (ECM) and the Vehicle Stability Control (VSC) system.
2. What are the common symptoms of a P1631 error in a 2014 Toyota RAV4?
Common symptoms include the VSC light illuminating on the dashboard, traction control issues, and potential loss of vehicle stability assistance.
3. What are the possible causes of a P1631 code in a 2014 Toyota RAV4?
Potential causes include faulty wiring or connectors between the ECM and VSC, a malfunctioning ECM or VSC module, or a software communication issue.
4. How can I diagnose a communication error between the ECM and VSC in a 2014 Toyota RAV4?
Diagnosis typically involves inspecting the wiring and connectors for damage, testing the ECM and VSC modules, and using a diagnostic scanner to check for communication faults.
5. Can a DIY enthusiast repair a P1631 error in a 2014 Toyota RAV4?
While some basic checks like inspecting wiring connections can be done by DIY enthusiasts, resolving the root cause of the communication error may require professional diagnostic equipment and expertise.
6. Is it safe to continue driving a 2014 Toyota RAV4 with a P1631 error code?
It is not recommended to continue driving with a P1631 code as it can affect the vehicle's stability control system, potentially compromising driving safety.
7. How much does it typically cost to repair a P1631 error in a 2014 Toyota RAV4?
The cost of repair can vary depending on the exact cause of the communication error, but it may involve expenses for parts replacement, labor, and diagnostic services.
8. Can a P1631 error in a 2014 Toyota RAV4 be intermittent?
Yes, communication errors between the ECM and VSC can sometimes be intermittent, making it challenging to pinpoint the exact cause of the problem.
9. Will resetting the error code make the issue go away in a 2014 Toyota RAV4?
Resetting the error code may temporarily clear the warning lights, but if the underlying communication issue persists, the code is likely to reappear.
10. How long does it take to repair a P1631 error in a 2014 Toyota RAV4?
The repair time can vary based on the diagnosis and required fixes. It's advisable to consult a professional technician for an accurate assessment of the repair duration.
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