P0791 2017 Toyota RAV4 Code - Intermediate Shaft Speed Sensor 'A' Circuit
Quick Answer
This sensor detects the rotation speed of the counter gear which indicates the output speed of the transaxle. Common causes include Faulty Speed sensor NC (Transmission Revolution Sensor), Speed sensor NC harness is open or shorted, Speed sensor NC 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
- P0791 2017 Toyota RAV4 indicates Intermediate Shaft Speed Sensor 'A' Circuit.
- Common causes
- Common causes include Faulty Speed sensor NC (Transmission Revolution Sensor), Speed sensor NC harness is open or shorted, Speed sensor NC 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 P0791 2017 Toyota RAV4 Description
The NT terminal of the ECM detects a pulse signal from the speed sensor NT (input RPM). The ECM calculates gear shifts by comparing the signal from speed sensor NT with the signal from speed sensor NC.
While the vehicle is operating in 2nd, 3rd, 4th, or 5th gear with the shift lever in D, if the input shaft speed is less than 300 rpm although the output shaft speed is more than 1000 rpm, the ECM interprets this as a fault, illuminates the MIL and stores the Diagnostic Trouble Code (DTC). P0791 code is detected when the input speed sensor voltage is more than 1.9V or less than 0.1V for 2 seconds or more.
What are the Possible Causes of the DTC P0791 2017 Toyota RAV4?
- Faulty Speed sensor NC (Transmission Revolution Sensor)
- Speed sensor NC harness is open or shorted
- Speed sensor NC circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0791 2017 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 P0791 2017 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.
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Frequently Asked Questions about P0791 2017 Toyota RAV4 Code
1. What are the common symptoms of OBDII code P0791 on a 2017 Toyota RAV4?
The common symptoms of OBDII code P0791 include issues with shifting gears, hesitation or jerking during acceleration, and an illuminated check engine light.
2. What does the OBDII code P0791 for a 2017 Toyota RAV4 indicate?
OBDII code P0791 for a 2017 Toyota RAV4 specifically refers to a problem with the Intermediate Shaft Speed Sensor 'A' Circuit.
3. What are possible causes of OBDII code P0791 on a 2017 Toyota RAV4?
Possible causes of OBDII code P0791 include a faulty intermediate shaft speed sensor, damaged wiring or connectors related to the sensor, or internal transmission issues.
4. How can I diagnose the issue causing OBDII code P0791 on my 2017 Toyota RAV4?
Diagnosing the issue causing OBDII code P0791 may involve using a scan tool to read the code, checking the wiring and connectors of the intermediate shaft speed sensor, and conducting a visual inspection for any visible damage.
5. Can I continue driving my 2017 Toyota RAV4 with OBDII code P0791?
It is not recommended to continue driving your 2017 Toyota RAV4 with OBDII code P0791, as it can lead to further damage to the transmission system. It is advisable to have the issue diagnosed and repaired promptly.
6. How do I repair OBDII code P0791 on a 2017 Toyota RAV4?
Repairing OBDII code P0791 on a 2017 Toyota RAV4 may involve replacing the intermediate shaft speed sensor, repairing or replacing damaged wiring or connectors, or addressing any internal transmission problems.
7. Can a DIY enthusiast fix OBDII code P0791 on a 2017 Toyota RAV4?
While some experienced DIY enthusiasts may be able to address OBDII code P0791 by replacing the intermediate shaft speed sensor or checking the wiring, it is recommended to consult a professional mechanic for accurate diagnosis and repair.
8. Is resetting the OBDII system an effective way to clear code P0791 on a 2017 Toyota RAV4?
Resetting the OBDII system may temporarily clear the code P0791, but it will not fix the underlying issue causing the fault. It is essential to diagnose and repair the problem to prevent the code from reoccurring.
9. How much does it cost to repair OBDII code P0791 on a 2017 Toyota RAV4?
The cost of repairing OBDII code P0791 on a 2017 Toyota RAV4 can vary depending on the specific cause of the issue, the labor rates in your area, and whether genuine OEM parts are used for the repair. It is advisable to obtain quotes from different mechanics for an accurate estimate.
10. Are there any recalls or technical service bulletins related to OBDII code P0791 on a 2017 Toyota RAV4?
It is recommended to check with Toyota dealership or official sources for any recalls or technical service bulletins related to OBDII code P0791 on a 2017 Toyota RAV4, as manufacturers may provide assistance or coverage for certain issues.
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