Answers
Dec 19, 2023 - 07:29 AM
If your Infiniti FX35 AWD 2009 is showing error codes P1721 and P0725, which are related to transmission sensors, doing a transmission fluid flush might not directly solve the issue. Instead, you should:
Check and replace the vehicle speed sensor and engine speed sensor.
Inspect wiring and connectors for any damage.
Reset the fault codes using an OBD-II scanner.
Take the car for a test drive to see if the issues persist.
Check and replace the vehicle speed sensor and engine speed sensor.
Inspect wiring and connectors for any damage.
Reset the fault codes using an OBD-II scanner.
Take the car for a test drive to see if the issues persist.
Dec 19, 2023 - 08:39 PM
You should inspect the wiring and replace the speed sensor.
Dec 20, 2023 - 11:07 PM
The codes P1721 and P0725 in a 2009 Infiniti FX35 AWD indicate issues with the vehicle speed sensor and engine speed input circuit, respectively. While a transmission flush may help if the problems are related to dirty or contaminated fluid, it won't directly fix sensor or circuit issues. First, inspect and potentially replace faulty sensors. If the transmission fluid is dirty, consider a flush, but address the underlying sensor or circuit problem to prevent future issues. If unsure, consult a qualified mechanic for a thorough inspection.
Dec 21, 2023 - 10:59 PM
Hey there!
So, you've got those P1721 and P0725 trouble codes showing up on your 2009 Infiniti FX35 AWD, but no signs of transmission issues, huh? Hold on there, partner, let's not jump to the flush just yet. While a fresh transfusion can work wonders for some transmissions, in your case, it might be like putting fancy rims on a car with a flat tire.
Here's the scoop: P1721 usually points to an issue with the vehicle speed sensor, while P0725 is all about the engine speed input signal. Both are linked to the transmission control system.
Now, a transmission flush is more about changing out the fluid than directly addressing those specific codes. It's like giving your transmission a fresh drink to keep things running smoothly. However, if the fluid's been neglected, a flush might help prevent potential problems down the road.
But here's the catch – a flush won't magically make those codes disappear. If the sensors are acting up or there's an electrical gremlin in the system, that needs some focused attention. You might want to check the wiring and connectors associated with those sensors, and if everything looks good, it might be time to bring in a diagnostic tool to pinpoint the exact issue.
Long story short, a flush is a good maintenance, but for these specific codes, a little extra detective work might be needed. If you're not the DIY type, a trip to the mechanic armed with the codes can save you some head-scratching.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Happy troubleshooting!
So, you've got those P1721 and P0725 trouble codes showing up on your 2009 Infiniti FX35 AWD, but no signs of transmission issues, huh? Hold on there, partner, let's not jump to the flush just yet. While a fresh transfusion can work wonders for some transmissions, in your case, it might be like putting fancy rims on a car with a flat tire.
Here's the scoop: P1721 usually points to an issue with the vehicle speed sensor, while P0725 is all about the engine speed input signal. Both are linked to the transmission control system.
Now, a transmission flush is more about changing out the fluid than directly addressing those specific codes. It's like giving your transmission a fresh drink to keep things running smoothly. However, if the fluid's been neglected, a flush might help prevent potential problems down the road.
But here's the catch – a flush won't magically make those codes disappear. If the sensors are acting up or there's an electrical gremlin in the system, that needs some focused attention. You might want to check the wiring and connectors associated with those sensors, and if everything looks good, it might be time to bring in a diagnostic tool to pinpoint the exact issue.
Long story short, a flush is a good maintenance, but for these specific codes, a little extra detective work might be needed. If you're not the DIY type, a trip to the mechanic armed with the codes can save you some head-scratching.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Happy troubleshooting!
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