Mercedes-Benz Check Engine Light Codes for Troubleshooting!

Mercedes-Benz vehicles obd1 code retrieval

mercedes benz obd2 scanner

You can get the check engine light codes of Mercedes-Benz vehicles for models made before 1995 using the check engine light. All you need to are:

Turn ignition key to run with engine not running
Depress gas pedal 5 times in wide open throttle (WOT) position within 5 seconds
Read the flash codes in the dash using the code table below.

OBD1 Flash Code Table:

Code 1211 MCU malfunction
Code 1215 Air mass flow sensor fault
Code 1221 Oxygen sensor
Code 1222 Oxygen sensor control
Code 1223 Engine coolant temperature
Code 1224 Air intake temperature
Code 1231 Battery voltage
Code 1232 Idle throttle valve switch
Code 1233 Full load throttle valve switch
Code 1251 and Code 1252 Injection valve
Code 1261 Fuel pump relay
Code 1262 Idle speed control valve
Code 1263 Fuel tank vent valve
Code 1264 Oxygen sensor heater relay
Code 1444 No failure

When reading OBD2 Mercedes-Benz fault codes, the following designation applies:

Code P0440

P means power train codes, if B means body codes and C means chassis codes

0 means DTS source like SAE or 1-BMW

4 means System

0 Total System
1 Air/Fuel Induction
2 Fuel Injection
3 Ignition System or Misfire
4 Auxiliary Emission Control
5 Vehicle Speed & Idle Control
6 Control Module Inputs/outputs
7 Transmission

40 Means Sequentially numbered fault (run from 0-99)

Mercedes-Benz Check Engine Light Codes for 2005:


P0100 MAP Circuit Malfunction
P0105 MAP Circuit Malfunction
P0110 IAT Circuit Malfunction
P0115 ECT Circuit Malfunction
P0120 Throttle Position Circuit Malfunction
P0130 02S-1 Circuit Malfunction
P0133 02S-1 Circuit Slow Response
P0135 025-1 Heater Circuit Malfunction
P0136 025-2 Circuit Malfunction
P0141 02S-2 Heater Circuit Malfunction
P0170 Fuel Trim Malfunction
P0201 Injector Circuit Malfunction - Cyl. 1
P0202 Injector Circuit Malfunction - CyL. 2
P0203 Injector Circuit Malfunction - Cyl. 3
P0204 Injector Circuit Malfunction - CyL. 4
P0243 Recirculated Air Flap Actuator (M 16/7) For Supercharger
P0300 Random Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0325 KS 1 Circuit Malfunction
P0335 CKP Sensor Circuit Malfunction
P0341 CMP Sensor Circuit Range7Performance
P0370 Angle Deviation Between Camshaft And Crankshaft
P0400 Exhaust Gas Recirculation Flow Malfunction
00410 Air Injection System Malfunction
P0422 TWC Efficiency Below Threshold
P0440 EVAP System Malfunction
P0441 EVAP System Incorrect Purge Flow
P0442 EVAP System Leak Detected (Small Leak)
P0443 EVAP System Purge Control Valve Circuit Malfunction
P0446 EVAP System Vent Control Malfunction
P0450 EVAP System Pressure Sensor Malfunction
P0455 EVAP System Leak Detected (Large Leak)
P0460 Fuel Sensor Circuit Low Input
P0500 VSS Sensor Malfunction
P0507 IDC RPM Higher Than Expected
P0560 System Voltage Malfunction
P0565 Cruise Control Switch
P0600 Serial Communication Link Malfunction
P0604 Internal Control Module Random Access Memory (RAM) Error
P0605 Internal Control Module Read Only Memory (ROM) Error
P0700 Transmission Control System Malfunction
P0702 Transmission Control System Electrical
P0715 Input Turbine Speed Sensor Circuit Malfunction
P0720 Output Speed Sensor Circuit Malfunction
P0730 Incorrect Gear Ratio
P0740 Torque Converter Clutch Circuit Malfunction
P0743 Torque Converter Clutch Circuit Electrical
P0748 Pressure Control Solenoid Electrical
P0753 Shift Solenoid A Electrical
P0758 Shift Solenoid B Electrical
P0763 Shift Solenoid C Electrical
P0801 Engine Climate Control Electric Cooling Fan Malfunction
P0803 AnF1ap Filter Actuator Malfunction
P0805 Supercharger Function
P0806 Magnetic Supercharger Clutch
P0809 Angle Deviation Between Camshaft & Crankshaft
P0811 CAN From Electronic Ignition Lock
P1163 Oil Level Switch
P1181 Engine Climate Control Electric Cooling Fan Malfunction
P1182 Starter Lock Out Relay Module (N65k2)
P1186 Fuel Safety Shut Off Recognized
P1235 Supercharger Function
P1236 Magnetic Supercharger Clutch (Y2!1)
P1386 Knock Sensor Control From ECM (N3!10) At End Stop
P1400 EGR Switchover Valve Malfunction
P1420 AIR Pump Switchover Valve)
P1453 AIR Relay Module
P1491 Refrigerant Pressure In AC System Too High
P1519 Adjustable Camshaft Timing Solenoid
P1525 Adjustable Camshaft Timing Solenoid
P1542 Pedal Value Sensor
P1570 CAN Signal From DAS Control Nodule To Engine Control Module
P1580 EACCISC Actuator
P1584 Stop Lamp Switch
P1603 CAN Signal From EIS
P1642 Engine Control Module Incorrectly Coded
P1643 Engine Control Module Incorrectly Coded Or No CAN Transmission From Transmission Control Module
P1644 Transmission Version Can Not Be Checked Due To Low Voltage At Transmission Control Module
P1681 Crash Signal Not Plausible
P1747 CAN Signal From ETC

Getting the above Mercedes-Benz fault codes do not necessarily mean it is a serious or hard code. Sometimes it could be erased first and then re-tried again to make sure if the original code is permanent or not. A lot of the common Mercedes-Benz OBD1 fixes are based on doing the basic engine maintenance requirements. Sometimes, garages are using the most common fixes available on the vehicles repair database which are usually stored in garages or vehicle's manufacturer's files.

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