Hi: I posted this a couple days ago but listed the second code wrong.
Does anybody know what a P1950 is?


I have an 06 F 150 with the 4.2 and 86,000 miles. The transmission has been shuddering on the 1 to 2 shift when pulling a trailer. I checked the OBD2 codes and got an P1900 which shows as trans output shaft speed sensor faulty. I also got a P1950 which doesn't seem to show up anywhere. I know it's a trans sensor but don't know which one. I'm wondering if need a new transmission or if it could be one of the faulty sensors causing the shudder?
Any one know what this code is. Thank you in advance for your input.
P.S. Brand new to this forum, curious to see the responses.

 

P1950 is not a code that ford uses for an 06 F-150 are you sure that, that was the code?

 

Yes I am sure that is the code. I couldn't find it anywhere. P19 makes it a trans code, just can't figure out which sensor it could refer to.
I was hoping maybe one of the Ford engineering team might see it and be able to shed some light.

 

I am a Ford tech and there is no info on that code

 

Are you sure it wasn't P1750? Two different items come up for that code.
Maximum adapted (EPC) pressure for reverse. Though that shouldn't affect your 1st to 2nd.
Clutch - adaptive learning not completed.
Or maybe P1905? Transmission control module (TCM) - programming.
I too find no reference to P1950.

 

There is a U1950, Data bus - communication malfunction.

 

Maybe you could take a picture of the error code screen and let us know what device you are using. It might be interpreting the signal incorrectly and be a device only code developed by that manufacturer for unknown situations or for in-house software testing that shouldn't be seen by the consumer.

 

Possibly...C1950 - Accelerometer Sensor Circuit Failure

http://www.troublecodes.net/obd2/ccodes/

 

OK I'm using a scan master obd2 bluetooth enabled. I checked it again to get a pic, as requested. This is weird. It now says U 1950 and U 1900. I ran the scan several times before the original post and wasn't even drinking. Yet. So I cleared all codes and it showed p1000 powertrain but no specific code and U 1950, while everything was running fine. The only problem it is having is the shift problem, which may not show on a sensor, or I could have a faulty reader, but it works fine in my other F 150 (2010)

Found an answer on the P1000. I did clear codes to find out what was really happening. Apparently it hasn't finished reading yet. Thank you all for trying to help. I'll wait for the new code list and try again.