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
MCM 210D04 DEF Dosing Valve Circuit Failed Low
MCM 210D05 DEF Dosing Valve Circuit Failed Open
MCM 210D05 The component 'AdBlue metering valve' or its electrical line has an open circuit.
MCM 210D08 DEF Metering Unit - Exceeded Unclog Attempts
MCM 210D1F Dosing unit is defect (possibly flooded by DEF)
MCM 211D03 Component 'SCR-Frameborder-Reductant-Dosing-Valve' or its electrical line has a short circuit to positive.
MCM 211D03 Component 'SCR-FrameModul-Reductant-Dosing-Valve' or its electrical line has a short circuit to positive.
MCM 211D04 Component 'SCR-FrameModul-Reductant-Dosing-Valve' or its electrical line has a short circuit to ground.
MCM 211D04 Component 'SCR-Frameborder-Reductant-Dosing-Valve' or its electrical line has a short circuit to ground.
MCM 211D05 The component 'SCR-FrameModul-Reductant-Dosing-Valve' or its electrical line has an open circuit.
MCM 211D05 The component 'SCR-Frameborder-Reductant-Dosing-Valve' or its electrical line has an open circuit.
MCM 230D00 DEF Tank Temperature - High
MCM 230D01 DEF Tank Temperature - Low
MCM 230D03 Component 'Y627 (AdBlue heater coolant solenoid valve)' or its electrical line has a short circuit to positive.
MCM 230D04 Component 'Y627 (AdBlue heater coolant solenoid valve)' or its electrical line has a short circuit to ground.
MCM 230D05 The component 'Y627 (AdBlue heater coolant solenoid valve)' or its electrical line has an open circuit.
MCM 230D07 Component 'Y627 (AdBlue heater coolant solenoid valve)' is defective.
MCM 230D07 DEF Tank Temperature Too Low
MCM 230D11 Component 'Y627 (AdBlue heater coolant solenoid valve)' has an open circuit or short circuit to positive.
MCM 230D1F DEF Tank Temperature Too High
MCM 271702 The coolant pump is in limp-home mode.
MCM 271707 The coolant pump has a mechanical fault.
MCM 281703 Component 'Y621 (Exhaust gas recirculation controller)' or its electrical line has a short circuit to positive.
MCM 281704 Component 'Y621 (Exhaust gas recirculation controller)' or its electrical line has a short circuit to ground.
MCM 281705 The component 'Y621 (Exhaust gas recirculation controller)' or its electrical line has a short circuit.
MCM 28170E The component 'Y621 (Exhaust gas recirculation controller)' or its electrical line has an open circuit.
MCM 28F0E9 NOx Mass Signal Not Available via CAN
MCM 2A0507 Multiple cylinder have detected a misfire at idle
MCM 2A050E Combustion misfiring was detected in several cylinders.
MCM 2A051F Combustion misfiring at idle was detected in several cylinders.
MCM 2A1503 Component 'Y642 (Quantity control valve)' or its electrical line has a short circuit to positive.
MCM 2A1504 Component 'Y642 (Quantity control valve)' or its electrical line has a short circuit to ground.
MCM 2AF0ED DEF Dosing Correction Factor Not Available via CAN
MCM 2B0507 Cylinder 1 has detected a misfire at idle
MCM 2B050A Detection of Misfire on cylinder 1 when misfire rate is above 0.05
MCM 2B050B Combustion misfiring of cylinder 1 has been detected.
MCM 2B050E The lower limit value for the quantity correction at idle (cylinder 1) has been reached.
MCM 2B051F The upper limit value for the quantity correction at idle (cylinder 1) has been reached.
MCM 2C0507 Cylinder 2 has detected a misfire at idle
MCM 2C050B Combustion misfiring of cylinder 2 has been detected.
MCM 2C050E The lower limit value for the quantity correction at idle (cylinder 2) has been reached.
MCM 2C051F The upper limit value for the quantity correction at idle (cylinder 2) has been reached.
MCM 2D0507 Cylinder 3 has detected a misfire at idle
MCM 2D050A Detection of Misfire on cylinder 3 when misfire rate is above 0.05
MCM 2D050B Combustion misfiring of cylinder 3 has been detected.
MCM 2D050E The lower limit value for the quantity correction at idle (cylinder 3) has been reached.
MCM 2D051F The upper limit value for the quantity correction at idle (cylinder 3) has been reached.
MCM 2D1509 Fault in CAN communication with component 'Y636 (Boost pressure regulator)'.
MCM 2E0507 Cylinder 4 has detected a misfire at idle
MCM 2E050B Combustion misfiring of cylinder 4 has been detected.
MCM 2E050E The lower limit value for the quantity correction at idle (cylinder 4) has been reached.
MCM 2E051F The upper limit value for the quantity correction at idle (cylinder 4) has been reached.
MCM 2EF0EE Control unit 'A1 (Instrument cluster (ICUC) control unit)' has received no CAN message from control unit 'A4 (Engine management (MCM) control unit)'.
MCM 2EF0FF CAN signal 'DM1' from control unit 'A1 (Instrument cluster (ICUC) control unit)' is missing or implausible.
MCM 2F0405 The component 'Y616 (Fan clutch solenoid valve)' or its electrical line has an open circuit.
MCM 2F0507 Cylinder 5 has detected a misfire at idle
MCM 2F050A Detection of Misfire on cylinder 5 when misfire rate is above 0.05
MCM 2F050B Combustion misfiring of cylinder 5 has been detected.
MCM 2F050E The lower limit value for the quantity correction at idle (cylinder 5) has been reached.
MCM 2F051F The upper limit value for the quantity correction at idle (cylinder 5) has been reached.
MCM 300402 A sporadic fault was detected in the engine brake (stage 1).
MCM 300403 Component 'Y624 (Engine brake solenoid valve, stage 1)' has a short circuit to positive.
MCM 300404 Component 'Y624 (Engine brake solenoid valve, stage 1)' has a short circuit to ground.
MCM 300405 Component 'Y624 (Engine brake solenoid valve, stage 1)' has an open circuit.
MCM 300507 Cylinder 6 has detected a misfire at idle
MCM 30050A Detection of Misfire on cylinder 6 when misfire rate is above 0.05
MCM 30050B Combustion misfiring of cylinder 6 has been detected.
MCM 30050E The lower limit value for the quantity correction at idle (cylinder 6) has been reached.
MCM 30051F The upper limit value for the quantity correction at idle (cylinder 6) has been reached.
MCM 310402 A sporadic fault was detected in the engine brake (stage 2).
MCM 310403 Component 'Y625 (Engine brake solenoid valve, stage 2)' has a short circuit to positive.
MCM 310404 Component 'Y625 (Engine brake solenoid valve, stage 2)' has a short circuit to ground.
MCM 310405 Component 'Y625 (Engine brake solenoid valve, stage 2)' has an open circuit.
MCM 32050B Combustion misfiring of cylinder 8 has been detected.
MCM 32050E The lower limit value for the quantity correction at idle (cylinder 8) has been reached.
MCM 32F0E2 The operating temperature of component 'B624 (Oxygen sensor)' was not reached.
MCM 32F0E3 The component 'B624 (Oxygen sensor)' or its electrical line has a short circuit.
MCM 32F0E5 The component 'B624 (Oxygen sensor)' or its electrical line has an open circuit.
MCM 32F0EE The oxygen concentration in deceleration mode is implausible.
MCM 33F0E5 The component 'B624 (Oxygen sensor)' or its electrical line has an open circuit.
MCM 34F0E3 MU_ISP_SOOT_SENS_SRH
MCM 34F0E4 MU_ISP_SOOT_SENS_SRL
MCM 34F0E5 The component 'B624 (Oxygen sensor)' or its electrical line has an open circuit.
MCM 34F1EB An internal control unit fault was detected.
MCM 34F1EC An internal control unit fault was detected.
MCM 34F1EE An internal control unit fault was detected.
MCM 34F3E1 The boost pressure is too low.
MCM 350403 Component 'Y642 (Quantity control valve)' or its electrical line has a short circuit to positive.
MCM 350404 Component 'Y642 (Quantity control valve)' or its electrical line has a short circuit to ground.
MCM 350405 The current value for the 'Y642 (Quantity control valve)' component is too low.
MCM 350406 The 'Y642 (Quantity control valve)' component current control has a malfunction.
MCM 35041F Rail pressure regulation has a malfunction.
MCM 35F0E5 The electrical line to component 'B624 (Oxygen sensor)' is defective.
MCM 35F1EB An internal control unit fault was detected.
MCM 35F1EC An internal control unit fault was detected.
MCM 35F1EE An internal control unit fault was detected.
MCM 36F0ED There is a fault in the charge air system.
MCM 36F0EE There is a fault in the charge air system.
MCM 36F1EC An internal control unit fault was detected.
MCM 36F1EE An internal control unit fault was detected.
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