Q: Code P0700 and P0722

asked by on

Trans light came on ,did a check came up with these sensor numbers and just wanted to make sure that I'm not paying for some don't/ do need.. sensor # po700 cnf mod12, po722 cnf mod IF 213

My car has 112000 miles.
My car has an automatic transmission.

Hi There, Code P0700 relates to the ECU detecting that there is a malfunction in the transmission control system, which then triggers a fail safe mode. Once this happens, this code will remain until the problem is corrected. In your case code P0722 relates to the power train computer not detecting the proper signal from the transmission output speed sensor, which is likely what caused code P0700 to be triggered as well. The transmission speed sensor is a magnetic sensor that provides information related to the speed of the input and output shafts in the transmission, allowing the transmission to shift smoothly. The sensor counts the internal number of revolutions of the transmission and transmits that information to the transmission control unit, where the data is used to determine the rotational speed. As the rotation increases, the control unit directs the changing of gears. When this is not working properly, this may cause the transmission to shift erratically or in some cases not at all. I would recommend having an expert from YourMechanic come to your location to take a look at your car.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Code P0700 and P0722

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: Timing and crankshaft pulley 2003 Volvo S60

Hi there - you have probably not bent valves yet, but damage is not far away. Replacing timing belts on these engines requires fixtures to hold the crankshaft and camshafts in certain positions while changing the belt for this reason....

Q: Aisin transmission

The transmission is reliable and, indeed, I see no transmission related complaints in the NHTSA database for the 2007 Volvo S80. The car overall has a total of only 10 complaints in the NHTSA database which is the smallest number...

Q: Both the AdvTrac and ABS Lights are on; how do I disengage them?

Hi, and thanks for contacting YourMechanic. First, try checking the ABS sensors for a proper connection. You may need to remove the sensors and clean them off. If there was any moisture on the sensors while the vehicle sat, then...

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...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...