P0741Średni
Sprzęgło blokady momentobiernika — zablokowane mechanicznie
Układ napędowy
Sprawdź szczegóły →P1870
WysokiTransmission component slippage – torque converter clutch (TCC) slipping beyond acceptable limit. Code indicates improper operation of the automatic transmission.
OBD-II (EN): Torque Converter Clutch Slip
Code P1870 indicates excessive slippage of the torque converter clutch (TCC) in an automatic transmission – most commonly found in GM vehicles with 4L60E series transmissions. Causes can range from contaminated transmission fluid, through a faulty solenoid, to worn internal friction components. Ignoring the code risks serious transmission damage – prompt diagnosis by a specialist is recommended.
Symptoms
Noticeable jerking or slipping while driving at a constant speed; poor acceleration and a feeling of transmission 'floating'; higher than normal engine RPM at the same driving speed (increased fuel consumption); possible transmission overheating; Check Engine light illuminated constantly.
Possible causes
• Worn or damaged torque converter clutch solenoid (TCC solenoid) • Contaminated, degraded, or incorrect viscosity transmission fluid • Worn or damaged TCC clutch friction plates inside the transmission • Clogged or damaged TCC control valve in the valve body • Low transmission fluid pressure caused by a worn pump or leaking hydraulic circuit
Affected systems
automatyczna skrzynia biegówsprzęgło blokady momentu obrotowego (TCC)układ hydrauliczny skrzynielektrozawory skrzyni biegówmoduł sterowania skrzynią (TCM)
Related codes
P0700Wysoki
System sterowania skrzynią biegów — usterka
Układ napędowy
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code P1870 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.