P0700Wysoki
System sterowania skrzynią biegów — usterka
Układ napędowy
Sprawdź szczegóły →P2855
WysokiClutch 'A' – Incorrect Pressure Charging Performance. The code indicates a problem with hydraulic pressure in the 'A' clutch circuit of the automatic transmission.
OBD-II (EN): Clutch A Pressure Control Circuit Performance
Code P2855 signals incorrect charging pressure for clutch 'A' in an automatic or dual-clutch transmission. The most common causes are a faulty hydraulic solenoid, contaminated ATF fluid, or leaks in the hydraulic system. This problem can lead to the transmission's limp mode – prompt diagnosis at a workshop is recommended.
Symptoms
Jerking or slipping during gear changes Delayed or hard gear shifts Transmission enters limp mode MIL (Check Engine) light on Possible transmission overheating Worsened acceleration dynamics
Possible causes
Faulty or clogged clutch 'A' pressure control solenoid Low or contaminated ATF fluid in the transmission Faulty hydraulic pressure sensor Internal leaks in the transmission hydraulic system Faulty transmission control module (TCM/TCU) Worn or damaged hydraulic seals and gaskets Contaminated transmission oil filters
Affected systems
Automatyczna skrzynia biegówUkład hydrauliczny skrzyniElektrozawory zmiany biegówModuł sterowania skrzynią (TCM)Sprzęgło 'A'
Related codes
P0750Wysoki
Elektrozawór zmiany biegu A — usterka obwodu
Układ napędowy
Sprawdź szczegóły →Sources and further reading
Does code P2855 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.