Skip the auto shop - Our mechanics make house calls

Q: I have codes p0726 and p0722 stored in my ECM.

asked by on

No hace cambio la transmisión
My car has an automatic transmission.

These codes come on when there are discrepancies in the rpm signal picked up by the engine speed sensor read by the engine control computer and the input shaft speed signal picked up bt the transmission control module. Both of these modules monitor engine speed , they just used different sensors to calculate this and if a difference in signals comes about, then either something is slipping or there is a sensor offering false data. A failing crankshaft or transmission input speed sensor can cause this issue. Consider hiring an experienced technician like one from YourMechanic who can come out for a more hands on look at the car and offer a more personal diagnosis of your check engine light codes.

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!
  1. Home
  2. Questions
  3. I have codes p0726 and p0722 stored in my ECM.

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: Check Engine Light is on - 2005 Dodge Stratus

You can keep replacing parts but until you get the codes in the computer diagnosed properly the Check Engine Light will keep coming on. The O2 sensors may give indications that they're not working when they are only indicating the...

Q: Engine cuts off

Unfortunately, with the information given for your Nissan Maxima, it is difficult to give a proper diagnosis at this time. From this description, I see that you in fact have replaced some components related to this issue already. I feel...

Q: Car wouldn't go and all of the warning lights came.

Hi there. Either the timing belt came off or the crankshaft position sensor could have failed. Remove the valve cover and crank the engine over. If the engine crank turns and the valve train moves, then the timing belt is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...