U0101Wysoki
Utrata komunikacji z TCM (sterownik skrzyni)
Komunikacja sieciowa
Sprawdź szczegóły →P1900
WysokiCode P1900 is a manufacturer-specific code indicating a fault in the transmission output shaft speed sensor circuit or a communication disruption between the Engine Control Unit (ECU) and the Transmission Control Module (TCM).
OBD-II (EN): Output Shaft Speed Sensor Circuit Malfunction or ECU-TCM Communication Error
Code P1900 signals a problem with the transmission output shaft speed sensor or a communication disruption between the ECU and TCM controllers. It may manifest as transmission jerking, limp mode, or an illuminated Check Engine light. Due to the complexity of diagnosing transmission systems, we recommend a visit to an authorized service center or a workshop with an advanced diagnostic scanner.
Symptoms
Incorrect or harsh gear shifts; transmission entering limp mode; MIL (Check Engine) light illuminated; jerking or slipping during gear changes; in some cases, no response to drive mode selection (D/R/N); possible transmission overheating.
Possible causes
• Faulty or dirty Output Shaft Speed (OSS) sensor • Open or short circuit in the wiring harness leading to the OSS sensor or TCM • Faulty or malfunctioning Transmission Control Module (TCM) • Communication disruption on the CAN bus between the Engine Control Unit (ECU) and the Transmission Control Module (TCM) • Low level or contaminated transmission fluid causing incorrect sensor readings
Affected systems
skrzynia biegów (automatyczna)czujnik prędkości wału wyjściowego (OSS)sterownik skrzyni biegów (TCM)magistrala CAN / komunikacja ECU-TCMukład kontroli emisji (wariant Audi/VW)
Related codes
P0722Wysoki
Czujnik prędkości wyjściowej skrzyni — brak sygnału
Układ napędowy
Sprawdź szczegóły →P0720Wysoki
Czujnik prędkości wyjściowej skrzyni — usterka obwodu
Układ napędowy
Sprawdź szczegóły →Code P1900 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Does code P1900 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.