P0791 2015 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 2015 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 2015 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 2015 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 2015 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 2015 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 2015 Toyota RAV4 Code
1. What are the common symptoms of OBDII code P0791 in a 2015 Toyota RAV4?
The common symptoms of OBDII code P0791 in a 2015 Toyota RAV4 include issues with shifting gears, harsh shifting, transmission slippage, and the transmission going into limp mode.
2. What could cause OBDII code P0791 to trigger in a 2015 Toyota RAV4?
The triggering of OBDII code P0791 in a 2015 Toyota RAV4 is often caused by a faulty intermediate shaft speed sensor 'A', damaged wiring or connectors related to the sensor, or internal transmission issues.
3. How serious is OBDII code P0791 in a 2015 Toyota RAV4?
OBDII code P0791 in a 2015 Toyota RAV4 should be taken seriously as it can lead to transmission performance issues, potentially causing further damage if left unresolved. It is recommended to address this code promptly.
4. Can I continue driving my 2015 Toyota RAV4 with OBDII code P0791?
While it is possible to continue driving your 2015 Toyota RAV4 with OBDII code P0791, it is not recommended. Continued driving with this code present can lead to further transmission problems and potential safety hazards.
5. How is OBDII code P0791 diagnosed in a 2015 Toyota RAV4?
Diagnosing OBDII code P0791 in a 2015 Toyota RAV4 typically involves using a diagnostic scanner to retrieve the code, checking the intermediate shaft speed sensor 'A' and its circuit for faults, and testing the sensor's functionality.
6. What are the repair options for fixing OBDII code P0791 in a 2015 Toyota RAV4?
Repair options for fixing OBDII code P0791 in a 2015 Toyota RAV4 may include replacing the intermediate shaft speed sensor 'A', repairing or replacing damaged wiring or connectors, or addressing any internal transmission issues.
7. Can I reset OBDII code P0791 in a 2015 Toyota RAV4 without fixing the underlying issue?
While you can reset OBDII code P0791 in a 2015 Toyota RAV4 using a diagnostic scanner, it is not recommended to do so without addressing the underlying issue. Resetting the code without fixing the problem will likely result in it reoccurring.
8. How much does it cost to repair OBDII code P0791 in a 2015 Toyota RAV4?
The cost to repair OBDII code P0791 in a 2015 Toyota RAV4 can vary depending on the exact cause of the issue, labor costs, and parts needed. It is advisable to consult a professional mechanic for an accurate estimate.
9. Are there any preventative maintenance tips to avoid OBDII code P0791 in a 2015 Toyota RAV4?
To help prevent OBDII code P0791 in a 2015 Toyota RAV4, regularly inspect and maintain the transmission system, including checking for any signs of wear or damage to the intermediate shaft speed sensor 'A' and related components.
10. Can a DIY enthusiast repair OBDII code P0791 in a 2015 Toyota RAV4?
While some DIY enthusiasts may have the skills to repair OBDII code P0791 in a 2015 Toyota RAV4, it is a complex task that may require specialized tools and expertise. For those less experienced, seeking professional help is recommended.
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