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I have PO 700 and PO 733 on my friends diagnostic reader. I changed the output speed sensor and it didn't help. should I change the input speed sensor next?

1997 dodge grand caravan 3.3 litre 4 speed 41 TE

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  • Dodge Master
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You have a problem with the transmission.

Posted on Apr 30, 2017

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I have P0715 error code for my LS430. I have change the speed sensor but no luck. Same Error still apprear in diagnostic tool.


You changed input or output sensor ?
P0715 LEXUS - Input/Turbine Speed Sensor Circuit Malfunction

Read more: http://helpforcars.net/obd_codes/p0715_lexus.html#ixzz4Cg5vYyhg

You see it says Circuit Malfunction not sensor ! check the wiring

Jun 26, 2016 | Cars & Trucks

1 Answer

My 2003 town & country van seems like its not getting enough gas when i drive. The speedometer reads zero while I'm doing 60 then jerks and catches up and my diagnostic port is not reading


Most likely a defective speed sensor on the transmission causing the tranny to go into limp mode and start out in 2nd or 3rd gear giving you the feel of lacking fuel.There are usually 2 sensors one input and one out put sensor. Usually the output one gives the most problem. I would recommend changing both though. If the diagnostic plug is not powering up a code reader then most likely a blown fuse usually associated with interior lights or cigarette lighters

May 18, 2015 | Cars & Trucks

1 Answer

I am looking for a ECU pinout or a Diagram. I am throwing a "turbine overspeed" code (P0716) on a non turbo car. Also P0721 and P0705 On second ECU with the same issue.


Hello. You are confusing the turbine over speed control sensor module of the car's transmission, with a turbo charger- a forced air induction device, of a car's engine. One has nothing to do with the other.

The turbine over-speed control module is basically a sensor that reads the speed of the transmission's input shaft (torque converter) in relation to the speed of the output shaft- transmission speed ratio/gear.

Simply put- when the P0716 error code displays, it means that the ECM has detected the value(s) of the input sensor as being out of range, like being too high or too low; or that there is some bad wiring issue in the circuit.

When this happens, the subsequent P0721 output speed sensor and P0705 transmission range sensor circuit malfunction error codes appear- and does not necessarily mean that the entire transmission components (electronic modules, sensors, or mechanical parts) have malfunctioned leading to a major transmission overhaul.

It is most likely that the Input Turbine Speed sensor needs to be replaced. Take the car to a well qualified SAE certified transmission specialist who has precise diagnostic and transmission control readers and are able to reset the computerized transmission modules once the repair is made.

Feb 20, 2015 | 2006 Kia Sorento

1 Answer

2010 mustang v6 input speed sensor code po 715 where is it ?


that is the input/turbine speed sensor circuit malfunction. or turbine shaft speed sensor. it tells the car when to shift.

Dec 24, 2014 | 2010 Ford Mustang

1 Answer

Have replaced speed sensor and speedometer, but speedometer still does not work. Do you have any suggestions on what to try next?


There are usually TWO speed sensors on modern day vehicles, INPUT and OUTPUT. You may have changed one of these , but you may need to change the other. Ask your parts supplier, they will help you with the other. GOOD LUCK FRIEND.

Nov 08, 2014 | 2001 Nissan Maxima

1 Answer

Input and Output Speed sensors changed but car is still not running.


You don't say if you had it checked for DTC's - diagnostic trouble codes ? Have a scan tool that views sensor data hooked up . See what the PCM/ECM or TCM is see for input data . Your best bet mite be to take to a qualified repair shop that has the diagnostic equipment an knowledge to find the problem . Rather then guessing an just replacing parts .

Apr 21, 2017 | Hyundai Motor 2002 Elantra

2 Answers

What causes a p720


PO720 code (output speed sensor circuit malfunction).

Apr 08, 2012 | 1999 Dodge Intrepid

1 Answer

Check engine light po 731


Diagnostic Test Code (DTC) P0731 is a transmission fault code and has a generic description of "GEAR RATIO ERROR IN FIRST GEAR".

The Powertrain Control Module (PCM) monitors the input shaft speed and the output shaft speed of the transmission through the input and output speed sensors. The proper gear ratio will produce a predictable difference between the two sensors. This DTC sets when the expected difference differs greatly from the actual difference between the two speed sensor readings.

This can be caused by several things including:
> Defective input speed sensor
> Defective output speed sensor
> Defective connections or wiring between either speed sensor and the PCM
> Shorted speed sensor circuit
> Open speed sensor circuit
> Slipping clutches inside the transmission

Please note that Transmission Control Module (TCM) replacement WILL NOT correct for this code.

The speed sensor data must be monitored with the proper equipment and the speed sensor circuits must be verified for proper function to determine the actual cause of this fault.

Dec 04, 2011 | 1996 Plymouth Grand Voyager

1 Answer

Check engine light with following codes p 1529 p0720 p0715


P1529 indicates that your TCM asked the ECM to turn on the check engine lamp.

The range switch and the output speed sensors are the items that are abnormally affecting the operation of the transmission. The diagnostic logic in your computer can distinguish these issues from one another, so you'll definitely want to do both. You have no diagnostic code for the input speed sensor (P0715) listed, so I have made no recommendation to replace it. In my opinion, it's not a labor-intensive repair, so I wouldn't recommend replacing it unless you have reason to believe it's bad.

DTC - P0720 (OUTPUT SHAFT SPEED SENSOR SYSTEM)
Code No. P0720 Output shaft speed sensor system
If the output from the output shaft speed sensor is continuously 50% lower than the vehicle speed for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, it is judged to be an open circuit or short-circuit in the output shaft speed sensor and diagnostic trouble code No. P0720 is output. If diagnostic trouble code No. P0720 is output four times, the transmission is locked into 3rd gear or 2rid gear as a fail-safe measure.
Probable cause
Malfunction of the output shaft speed sensor
Malfunction of the transfer drive gear or driven gear
Malfunction of connector
Malfunction of the TCM

DTC - P0715 (INPUT SHAFT SPEED SENSOR SYSTEM)
Code No. P0715 input shaft speed sensor system
If no output pulse is detected from the input shaft speed sensor for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h (19 mph) or more, it is judged to be an open circuit or short-circuit in the input shaft speed sensor and diagnostic trouble code No. P0715 is output. If diagnostic trouble code P0715 is output four times, the transaxle is locked into 3rd gear or 2nd gear as a fail-safe measure.
Probable cause
Malfunction of the input shaft speed sensor
Malfunction of the underdrive clutch retainer
Malfunction of connector
Malfunction of the TCM

Is needed replace.

Nov 04, 2009 | 2001 Hyundai Elantra

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