My tranny was acting up at the track today and I popped up a check engine light with this code. Any Ideas?

 

From the Service manual:

When the PCM detects a 2-2-3-3 shift pattern, then DTC P0751 sets.
DTC P0751 sets if both of the following conditions occur twice:

Condition 1
-The PCM commands 1st gear for 2 seconds.
-The estimated gear ratio is 1.2 - 1.8
-Speed ratio is greater than o.35 seconds.

Condition 2
-The PCM commands fourth gear for 1 second.
-The estimated gear ratio is 0.95 - 1.15.
-Speed ratio is greater than 0.85.
-All condition are met for 6 seconds.

Action Taken When the DTC Sets
-The PCM illuminates the malfunction indicator lamp (MIL).
-The PCM commands D2 line pressure.
-The PCM inhibits 4th gear if in hot mode.
The PCM freezes transmission adapt functions.
-The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Reports.
-The PCm stores DTC P0751 in PCm history.

Conditions for Clearing the MIL/DTC
-The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
-A scan tool can clear the MIL/DTC.
-The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
-The PCM cancels the DTC default actions when the fault no longer exists and/or the ignition switches is OFF long enough in order to power down the PCM.

Whew, that is too much typing. Hope it helps.

 

Thanks a Bunch MagRedSkull!! I cleared it out and was noticing a additional shift like it thought it was a 5 speed. Really weird. :crazy: