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What are the probable causes of DTC P0720?

Prnds are all lit on the dash, car runs great. solid yellow check engine light on

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Claude Kayser

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P0720 Output Speed Sensor Circuit Malfunction DTC

www.obd-codes.com/p0720
This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered ... Symptoms of a P0720 trouble code may include: Delayed shifts ...

P0720 - OBD II Trouble Code - RepairPal

repairpal.com > Encyclopedia > Exhaust & Emissions
Definition of error code P0720 - Output Speed Sensor Circuit Malfunction. ... of Nitrogen): One of the two ingredients that, when exposed to sunlight, cause smog.

P0720 Output speed sensor - Nissan Sentra manuals


Posted on Dec 12, 2015

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Richard Faber

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According to the database the code means OUTPUT SPEED SENSOR CIRCUT MALFUNCTION.

Posted on Dec 12, 2015

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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.

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2 Answers

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My guess? Replacing the OSS will take care of it. smile.gif I hope you don't have a faulty PCM. frown.gif

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