Skip the auto shop - Our mechanics make house calls

Q: Driving down the road, the transmission stop pulling. Has code p0720. What sensor needs changing?

asked by on

To replace code p0420 p0720 po520

My car has 163000 miles.
My car has an automatic transmission.

In the future, please include the model of Nissan and the motor size. This way we can be more certain we are giving you an accurate answer.

The P0420 code has to do with the catalytic converter. It will either be the catalytic converter or the downstream oxygen sensor. Diagnosing this requires a scanner and a five gas analyzer. The scanner is used to monitor the oxygen sensor operation and the five gas analyzer checks the emissions coming from the tail pipe. The gases coming from the tail pipe are used to determin whether or not the catalytic converter is working or not.

The P0520 code indicates a problem with the EOP (oil pressure sensor) electrical circuits. Testing this requires a wiring diagram and a test light.

The P0720 code suggests the output shaft speed sensor has failed. Before you go and replace it though, I highly recommend inspecting the wiring harness for problems. Check the connector at the sensor and make sure there is continuity through all the circuits of the speed sensor. Unfortunately, I can’t tell you where the output shaft speed sensor is located because I don’t know which model Nissan you have. It will be different for all of them. I can say however that it will be on the transmission and it will monitor the speed of the shaft that connects the transmission to the drive line.

If you should require more assistance with this, I recommend the following inspection to help you out. Transmission speed sensor replacement

Good luck!

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Driving down the road, the transmission stop pulling. Has code p0720. What sensor needs changing?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Melted dashboard, smells bad and is sticky

Nissan does not have any recalls or Service Bulletins regarding this issue currently. You are not alone though, many owners in hot climates like Texas are experiencing the same issue. There is a class action lawsuit involving your car and...

Q: Car won't start and the cd player ejected a cd without me touching it. What's going on?

Hi and thanks for contacting Your Mechanic. You had mentioned that your battery had 10.1 volts at the time and said that is what the battery usually has. A fully charged battery will have 12.6 volts, a 75% charged battery...

Q: Sometimes when I get to an intersection my car will die unless I keep my foot on the gas a little. Also, when I try to go up hills it will try to stop.

Hi there. Check the air idle control valve (IAC) and see if its plugged in or if the vacuum line is cracked. If the IAC is working, check for any additional vacuum leaks that the engine could have. If there...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...