Hybspec

P1745

Wysoki

Transmission line pressure too high for too long. Manufacturer-specific code, concerns the automatic transmission system (Chrysler, Dodge, Ford, Jeep, Nissan, and others).

OBD-II (EN): Transmission Line Pressure Too High For Too Long

Code P1745 means that the hydraulic pressure in the automatic transmission line remained too high for too long. This can be caused by a damaged solenoid, contaminated ATF fluid, or a problem with the TCM control module. Due to the complexity of the transmission hydraulic system, professional workshop diagnosis is recommended.

Symptoms

Hard or delayed gear shifts Transmission slippage MIL (Check Engine) light illuminated Transmission limp mode Jerking or thuds during gear shifts Transmission overheating

Possible causes

Damaged or stuck line pressure solenoid Low or contaminated ATF fluid in the transmission Damaged transmission control module (TCM) Disturbed communication between TCM and ECM (K-LINE error) Damaged pressure regulator or control valve Mechanical damage to the transmission oil pump Dirty or clogged transmission oil filter

Affected systems

Automatyczna skrzynia biegówUkład hydrauliczny skrzyni biegówModuł sterujący skrzynią biegów (TCM)Komunikacja TCM-ECMElektrozawory skrzyni biegów

Related codes

Does code P1745 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.