What does code P1756 mean?

Q: What does code P1756 mean?

Governor Pressure Not Equal To Target At 15-20 PSI. P1756 on GM vehicles means the transmission control module commanded a governor pressure of 15 to 20 PSI but the actual governor pressure sensor reading did not match that target within the expected tolerance. The computer detected a sustained mismatch between commanded and actual pressure during a specific low-pressure test window, which points to a hydraulic control or feedback problem inside the automatic transmission.

DTC codes / GM codes / P1756

P1756 · GMGovernor Pressure Not Equal To Target At 15-20 PSI

P1756 on GM vehicles means the transmission control module commanded a governor pressure of 15 to 20 PSI but the actual governor pressure sensor reading did not match that target within the expected tolerance. The computer detected a sustained mismatch between commanded and actual pressure during a specific low-pressure test window, which points to a hydraulic control or feedback problem inside the automatic transmission.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyProfessional

AreaTransmission

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