Que signifie votre code Code Défaut MERCEDES ?

Grace au système OBD, les Mercedes fabriqués après 1996 sont normalement équipés d'une prise diagnostique OBD.
Si l'ordinateur de la voiture rencontre un problème,un code d'erreur ou un code de diagnostic (DTC) sera stocké dans la mémoire de l'ECU de la voiture.
Avec un lecteur OBD branché sur le port OBD (On-Board Diagnostics) de la voiture, vous pouvez lire la liste des codes stockés, et donc découvrir quel est le problème.

Les codes suivent une formule permettant de savoir généralement quel est le problème avant même de regarder le tableau ci-dessous.
Nous vous présentons ci-dessus une liste très complète des différents codes défauts possibles.
Si le code défaut de votre auto s'affiche au tableau de bord, vous n'aurez peut-être même pas besoin d'un lecteur OBD . il sera dans la liste .
Réparer le code défaut de votre auto, c'est potentiellement simple à faire avec vos revues et méthodes techniques.

Revenir aux autres catégories de codes défauts MERCEDES



Réparer le code défaut de votre auto, c’est potentiellement simple à faire avec nos revues et méthodes techniques

Code Libellé
1968 The fuel injector (cylinder 3) has an electrical fault or an open circuit.
1969 The fuel injector (cylinder 5) has a short circuit to positive.
1970 The fuel injector (cylinder 5) has a short circuit to ground.
1971 The fuel injector (cylinder 5) has an electrical fault or an open circuit.
1972 The fuel injector (cylinder 5) has an electrical fault or an open circuit.
1977 The fuel injector (cylinder 1) has a short circuit to positive.
1978 The fuel injector (cylinder 1) has a short circuit to ground.
1979 The fuel injector (cylinder 1) has an electrical fault or an open circuit.
1980 The fuel injector (cylinder 1) has an electrical fault or an open circuit.
1981 The fuel injector (cylinder 6) has a short circuit to positive.
1982 The fuel injector (cylinder 6) has a short circuit to ground.
1983 The fuel injector (cylinder 6) has an electrical fault or an open circuit (8 cylinder engine)
1984 The fuel injector (cylinder 6) has an electrical fault or an open circuit (8 cylinder engine)
1985 The fuel injector (cylinder 4) has a short circuit to positive.
1986 The fuel injector (cylinder 4) has a short circuit to ground.
1987 The fuel injector (cylinder 4) has an electrical fault or an open circuit.
1988 The fuel injector (cylinder 4) has an electrical fault or an open circuit.
1989 The fuel injector (cylinder 2) has a short circuit to positive.
1990 The fuel injector (cylinder 2) has a short circuit to ground.
1991 The fuel injector (cylinder 2) has an electrical fault or an open circuit (6 cylinder engine)
1992 The fuel injector (cylinder 2) has an electrical fault or an open circuit (6 cylinder engine)
1993 The fuel injector (cylinder 3) has a short circuit to positive.
1994 The fuel injector (cylinder 3) has a short circuit to ground.
1995 The fuel injector (cylinder 3) has an electrical fault or an open circuit.
1996 The fuel injector (cylinder 3) has an electrical fault or an open circuit.
1997 The fuel injector (cylinder 5) has a short circuit to positive.
1998 The fuel injector (cylinder 5) has a short circuit to ground.
1999 The fuel injector (cylinder 5) has an electrical fault or an open circuit.
2000 The fuel injector (cylinder 5) has an electrical fault or an open circuit.
2001 Knocking combustion.
2001 M16/47 (Throttle valve actuator)- PlausibilityPosition Throttle valve.
2002 B37/3 (Accelerator pedal module) Hall sensor 1,Short circuit to positive.
2002 B37/3 (Accelerator pedal module) ,Voltage of Hall sensor 1 does not agree with voltage of Hall sensor 2.
2003 The signal from component B79/2 (Transmission neutral position sensor) is implausible
2004 Component B79/2 (Transmission neutral position sensor) has a short circuit to positive or an open circuit
2004 Thermostat monitor- The component is faulty
2004 B11/18 (Coolant temperature sensor)- Coolant thermostat
2005 B17/14 (Charge air temperature sensor)- Short circuit to ground
2005 B17/14 (Charge air temperature sensor)- Short circuit to positive/Open circuit in wiring
2005 Component B79/2 (Transmission neutral position sensor) has a short circuit to ground
2005 Crankshaft Position Sensor Signal Synchronization Error
2006 A16/7 (Knock sensor)
2006 Implausible signals from component B79/2 (Transmission neutral position sensor)
2007 Check component 'B2/5 (Hot film mass air flow sensor)'.
2007 Fault in communication with component N129 (Starter generator squib) or there is an open circuit
2007 M16/47 (Throttle valve actuator)Actual value potentiometer1- Comparative error to signal HFM-SFI voltage.
2008 M16/47 (Throttle valve actuator)Actual value potentiometer2- Comparative error to signal HFM-SFI voltage.
2008 Rail pressure sensor offset test- Value is above limit.
2010 Charge air system-Offset drift- Value is above limit.
2010 Fault in system Belt-driven starter/alternator
2010 Y62/29 (Cylinder 3 fuel injection valve) Control cable has Open circuit in wiring
2011 Charge air system-Sensitivity drift- The air mass is too large
2011 Y62/30 (Cylinder 4 fuel injection valve) Control cable has Open circuit in wiring
2012 B11 (Coolant temperature sensor)- The dynamic test was not plausible
2012 The signal from component S40/5 (Clutch pedal start enable switch) is implausible
2012 Y62y2 (Fuel injector cylinder 2) Control cable has Open circuit in wiring
2013 Ambient air temperature sensor
2013 Drive train CAN bus OFF fault.
2014 Check component B40 (Oil sensor (oil level, temperature and quality)); Value is above limit
2015 Y58/1 (Purge control valve)- Valve jamming/ stiff
2016 The CAN signal from circuit 15 does not match the signal via the hardware line
2017 B5/1 (Boost pressure sensor).
2017 Drive train CAN bus OFF fault.
2018 B79/2 (Transmission neutral position sensor)Positioning fault
2018 Rail pressure monitoring via volume control valve- The rail pressure is too high.
2019 Signal '1' from component 'B64/1 (Brake vacuum sensor)' is implausible
2020 Brake switch sensor-Brake pedal-electrical fault.
2020 Event:Sensor fault:Neutral gear
2020 RelaysStarter- Open circuit in wiring.
2021 Drive train CAN bus OFF fault.
2021 Heating of component G8/5 (Oxygen sensor upstream of TWC [KAT])- Open circuit in wiring.
2022 Heating of component G3/19 (Oxygen sensor downstream of catalytic converter)- Short circuit to positive.
2023 Harness injector-Cylinder 1-Resistance damage.
2024 T1/7 (Cylinder 1 ignition coil) Short circuit in primary wiring.
2025 Event:CAN message from control module Transmission control CAN signal faulty.
2025 Intake air temperature sensor 1 (cylinder bank 1) has a short circuit to ground.
2025 B28 (Intake manifold pressure sensor)- The atmospheric pressure between component B28 (Intake manifold pressure sensor) and component N3/27 (CDI control unit) is implausible
2026 B85 (Oxygen sensor)- Short circuit to positive.
2026 Event:CAN message from control module Traction systems- CAN signal faulty(Stop lamp switch).
2026 Event:Status of the brake:Functionality 'Vacuum supply' is not available
2026 Harness injector-Cylinder 3-Resistance damage.
2026 Intake air temperature sensor 1 (cylinder bank 1) has a short circuit to positive.
2027 O2 sensor downstream from catalytic converter Short circuit to positive.
2028 B85 (Oxygen sensor)-Pump current- Short circuit to positive.
2028 Engine speed signal- Short circuit to positive.
2029 Harness injector-Cylinder 4-Resistance damage.
2029 Intake air temperature sensor 1 (cylinder bank 1) has a malfunction.
2029 Mixture control system 1 (bank 1)
2029 Adaptation of component B79/2 (Transmission neutral position sensor):IMPLAUSIBLE
2030 B85 (Oxygen sensor)-Ground cable- Short circuit to positive.
2030 SensorCAN- CAN bus OFF.
2030 Test electrical lines between components 'Y76/3 (Cylinder 3 fuel injector)' and 'N3/9 (CDI control unit)' for open circuit.
2030 Intake air temperature sensor 1 (cylinder bank 1) has a malfunction.
2031 O2 sensor downstream from catalytic converter Short circuit to positive.
2031 NOx sensor Unknown fault type.
2031 Harness injector-Cylinder 4-Resistance level fault.
2032 B85 (Oxygen sensor)- Voltage is too high.
2032 Intake air temperature sensor 1 (cylinder bank 1) has a malfunction.
2032 M16/47 (Throttle valve actuator)Actual value potentiometer- Comparative error/Fault Adaptation(Emergency running).
2032 Test electrical line between components 'Y76/2 (Cylinder 2 fuel injector)' and 'N3/9 (CDI control unit)' for open circuit.
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