P0100Średni
Obwód czujnika masowego przepływu powietrza (MAF) — usterka
Układ napędowy
Sprawdź szczegóły →P1140
ŚredniManufacturer-specific code – most often concerns the mass air flow (MAF) sensor circuit, throttle position sensor, or oxygen sensor, depending on the vehicle make.
OBD-II (EN): Manufacturer Specific DTC - MAF, TPS, or O2 Sensor Circuit
Code P1140 is a manufacturer-specific error whose meaning varies depending on the vehicle make – it can concern the mass air flow sensor (MAF), throttle position sensor, oxygen sensor, or EGR system. Symptoms include an illuminated Check Engine light, worse performance, and higher fuel consumption. Due to the different definitions of this code, diagnosis by a specialist with appropriate software for the specific make is recommended.
Symptoms
Check Engine Light (MIL) on Possible deterioration of engine performance and throttle response Increased fuel consumption Abnormal engine idle (jerking, rpm fluctuations) Possible increased exhaust smoke In some cases, power limitation (limp mode)
Possible causes
BMW: Incorrect range or performance of the mass air flow (MAF) sensor circuit – contaminated or faulty MAF sensor Hyundai: Engine load mismatch indicated by MAF and throttle position sensor (TPS) – signal discrepancy Audi/VW: Excessive internal resistance of the oxygen sensor (Bank 2, Sensor 2) – sensor aging or electrical damage Citroen/Peugeot: Water in fuel – contaminated fuel or faulty water separator Chrysler/Dodge/Jeep: Open EGR (exhaust gas recirculation) valve circuit – faulty valve or wiring Damaged sensor wiring or electrical connectors Faulty engine control module (ECM/PCM) – rarely
Affected systems
Układ zarządzania silnikiem (ECM/PCM)Przepływomierz powietrza (MAF)Czujnik pozycji przepustnicy (TPS)Układ wydechowy / sondy lambdaUkład recyrkulacji spalin (EGR)Układ paliwowy
Related codes
P0120Wysoki
Obwód czujnika pozycji przepustnicy (TPS) — usterka
Układ napędowy
Sprawdź szczegóły →P0101Średni
Czujnik MAF — zakres/wydajność poza normą
Układ napędowy
Sprawdź szczegóły →P0401Średni
Recyrkulacja spalin (EGR) — niewystarczający przepływ
Układ napędowy
Sprawdź szczegóły →Code P1140 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Sources and further reading
Does code P1140 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.