P0717 Lexus Code - Input Speed Sensor Circuit No Signal
Quick Answer
The Input Speed sensor detects the rotation speed of the turbine which indicates the input speed of the transaxle. Common causes include Faulty Transmission Speed Sensor NT (Transmission Revolution Sensor), Transmission Speed Sensor harness is open or shorted, Transmission Speed Sensor 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
- P0717 Lexus indicates Input Speed Sensor Circuit No Signal.
- Common causes
- Common causes include Faulty Transmission Speed Sensor NT (Transmission Revolution Sensor), Transmission Speed Sensor harness is open or shorted, Transmission Speed Sensor 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 P0717 Lexus 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 transaxle is operating in 2nd, 3rd, 4th, 5th, or 6th 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).
What are the Possible Causes of the DTC P0717 Lexus?
- Faulty Transmission Speed Sensor NT (Transmission Revolution Sensor)
- Transmission Speed Sensor harness is open or shorted
- Transmission Speed Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0717 Lexus?
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 P0717 Lexus 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 P0717 Lexus Code
1. What are the common symptoms of OBDII code P0717 in a Lexus related to the Input Speed Sensor Circuit?
- Common symptoms include erratic shifting, transmission slippage, delayed engagement, and an illuminated check engine light.
2. What are the possible causes of the Input Speed Sensor Circuit No Signal code P0717 in a Lexus?
- Possible causes include a faulty input speed sensor, damaged wiring or connectors, low transmission fluid level, or a malfunctioning transmission control module.
3. How can I diagnose the Input Speed Sensor Circuit No Signal code P0717 in my Lexus?
- Diagnose the code by checking the input speed sensor for proper operation, inspecting wiring for damage, ensuring proper fluid levels, and using a scan tool to retrieve and clear the code.
4. Can a bad input speed sensor cause other transmission issues in a Lexus besides triggering code P0717?
- Yes, a faulty input speed sensor can cause additional transmission issues such as harsh shifting, poor acceleration, and decreased fuel efficiency.
5. What are some repair tips for addressing OBDII code P0717 in a Lexus?
- Repair tips include replacing the input speed sensor if faulty, repairing any damaged wiring, ensuring proper transmission fluid levels, and resetting the code after repairs are made.
6. Is it safe to continue driving my Lexus with OBDII code P0717 related to the Input Speed Sensor Circuit No Signal?
- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission damage and potential safety hazards.
7. How much does it typically cost to repair OBDII code P0717 in a Lexus at a professional auto repair shop?
- The repair cost can vary depending on the exact cause of the issue, but it can range from $150 to $500 for parts and labor.
8. Can I attempt to fix OBDII code P0717 related to the Input Speed Sensor Circuit myself, or should I seek professional help?
- If you have experience with automotive repairs and diagnostics, you may attempt to fix the issue yourself. However, if you are unsure or inexperienced, it is best to seek professional help to avoid further damage.
9. Will resetting the check engine light make OBDII code P0717 go away permanently in my Lexus?
- Simply resetting the check engine light may temporarily clear the code, but if the underlying issue causing code P0717 is not addressed, the code is likely to return.
10. Are there any preventive maintenance measures I can take to reduce the likelihood of encountering OBDII code P0717 in my Lexus?
- Regularly checking and maintaining transmission fluid levels, inspecting wiring for damage, and addressing any transmission issues promptly can help prevent code P0717 from occurring.
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