What does code P07DD mean?

Q: What does code P07DD mean?

Incorrect Shift from Gear 2. P07DD is a generic transmission code that indicates the transmission control module (TCM) detected an incorrect shift sequence from second gear, meaning the transmission either failed to engage second gear when commanded or slipped out of second gear unexpectedly. The TCM monitors input and output shaft speeds and compares them to the expected ratio for second gear; when the ratio falls outside the acceptable range for a calibrated time, it sets this code and typically illuminates the malfunction indicator lamp (MIL).

DTC codes / P07xx · Transmission / P07DD

P07DDIncorrect Shift from Gear 2

P07DD is a generic transmission code that indicates the transmission control module (TCM) detected an incorrect shift sequence from second gear, meaning the transmission either failed to engage second gear when commanded or slipped out of second gear unexpectedly. The TCM monitors input and output shaft speeds and compares them to the expected ratio for second gear; when the ratio falls outside the acceptable range for a calibrated time, it sets this code and typically illuminates the malfunction indicator lamp (MIL).

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.