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Home >> Mercedes Benz >> 2007 >> C280 Base >> Repair and Diagnosis >> Engine Performance >> System >> DTC Index >> Engine Performance DTCS >> ENGINES 111.921 /942 as of Sept. 1, 1998, 111.943, 111.944 as of Sept. 1, 1996, 111.946 as of June 1, 1998, 111.947 /973, 111.975 as of Aug. 1, 1996, ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998

ENGINES 111.921 /942 as of Sept. 1, 1998, 111.943, 111.944 as of Sept. 1, 1996, 111.946 as of June 1, 1998, 111.947 /973, 111.975 as of Aug. 1, 1996, ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998

DIAGNOSTIC TROUBLE CODE LIST

DTC Possible Cause Remedy
P0100 Hot film mass air flow sensor (B2/5) Hot film mass air flow sensor, ME-SFI fuel injection system electrical testing
P0105 Pressure sensor (B28) Pressure sensor, ME-SFI fuel injection system electrical testing
P0110 Intake air temperature sensor (in hot film mass air flow sensor B2/5) Intake air temperature sensor - ME-SFI gasoline injection system - Testing electrical system
P0115 Coolant temperature sensor (B11/4) Coolant temperature sensor - ME-SFI gasoline injection system - Testing electrical system
P0120 Actual value potentiometer in actuator Throttle valve actuator signal - Check ME-SFI idle speed control/electronic accelerator electronics
P0130 A: O2 sensor upstream of catalytic converter (G3/2) O2 sensor signal upstream of TWC - check electronics - ME-SFI fuel injection system
B: O2 sensor upstream of catalytic converter (G3/2) voltage increase too low
P0133 A: O2 sensor upstream of catalytic converter (G3/2) aging correction value exceeded O2 sensor signal upstream of TWC - check electronics - ME-SFI fuel injection system
B: O2 sensor upstream of catalytic converter (G3/2) aging cycle duration too long
P0135 O2 sensor heating of O2 sensor upstream of catalytic converter (G3/2) Oxygen sensor heater upstream TWC - Check - ME-SFI gasoline injection electronics
P0136 O2 sensor downstream of catalytic converter (G3/1) Oxygen sensor signal downstream TWC - Check ME-SFI gasoline injection electronics
P0141 O2 sensor heating of O2 sensor downstream of catalytic converter (G3/1) Oxygen sensor heater downstream TWC - Check ME-SFI gasoline injection electronics
P0170 A: Self-adaptation of "partial load" mixture formation to ME-SFI control module (N3/10) limit Unmetered air, fuel injector diaphragm-type pressure regulating valves, engine wear
B: Self-adaptation of "idle speed" mixture formation to ME-SFI control module (N3/10) limit
P0201 Fuel injector (Y62y1)
Cylinder 1
Fuel injector (Y62/1), ME-SFI fuel injection system electrical testing
P0202 Fuel injector (Y62y2)
Cylinder 2:
Fuel injector (Y62/2), ME-SFI fuel injection system electrical testing
P0203 Fuel injector (Y62y3)
Cylinder 3:
Fuel injector (Y62/3), ME-SFI fuel injection system electrical testing
P0204 Fuel injector (Y62y4)
Cylinder 4
Fuel injector (Y62/4), ME-SFI fuel injection system electrical testing
P0243 Recirculated air flap actuator (M16/7) for compressor (causal chain, measured using air mass) Supercharger air recirculation flap actuator - Check electronics - ME-SFI fuel injection system
P0300 A: Misfire
B: "Catalytic converter-damaging" misfire
Primary voltage (T1/1) - Check electronics - MESFI ignition system
Primary voltage (T1/2) - Check electronics - MESFI ignition system
Ignition voltage - Check electronics - ME-SFI ignition system
Fuel injection valve sealing - ME-SFI fuel injection valve - Testing hydraulics
Fuel injection valve operation and injection pattern - ME-SFI fuel injection valve - Testing hydraulics
Compression pressure
P0301 A: Cylinder 1 misfire
B: "Catalytic converter-damaging" cylinder 1 misfire
Ignition voltage - Check electronics - ME-SFI ignition system
Primary voltage (T1/1) - Check electronics - MESFI ignition system
Fuel injection valve sealing - ME-SFI fuel injection valve - Testing hydraulics
Fuel injection valve operation and injection pattern - ME-SFI fuel injection valve - Testing hydraulics
Compression pressure
P0302 A: Cylinder 2 misfire
B: "Catalytic converter-damaging" cylinder 2 misfire
Ignition voltage - Check electronics - ME-SFI ignition system
Primary voltage (T1/2) - Check electronics - MESFI ignition system
Fuel injection valve sealing - ME-SFI fuel injection valve - Testing hydraulics
Fuel injection valve operation and injection pattern - ME-SFI fuel injection valve - Testing hydraulics
Compression pressure
P0303 A: Cylinder 3 misfire
B: "Catalytic converter-damaging" cylinder 3 misfire
Ignition voltage - Check electronics - ME-SFI ignition system
Primary voltage (T1/2) - Check electronics - MESFI ignition system
Fuel injection valve sealing - ME-SFI fuel injection valve - Testing hydraulics
Fuel injection valve operation and injection pattern - ME-SFI fuel injection valve - Testing hydraulics
Compression pressure
P0304 A: Cylinder 4 misfire
B: "Catalytic converter-damaging" cylinder 4 misfire
Primary voltage (T1/1) - Check electronics - MESFI ignition system
Ignition voltage - Check electronics - ME-SFI ignition system
Fuel injection valve sealing - ME-SFI fuel injection valve - Testing hydraulics
Fuel injection valve operation and injection pattern - ME-SFI fuel injection valve - Testing hydraulics
Compression pressure
P0325 Knock sensor Cable connector
Knock sensor
P0335 Crankshaft position sensor (L5) Crankshaft position sensor - Check electronics - ME-SFI ignition system
P0341 Camshaft Hall sensor (B6/1) Camshaft Hall sensor - Check electronics - MESFI ignition system
P0370 Camshaft to crankshaft angle difference Inspect basic position of camshaft
P0400 Exhaust gas recirculation malfunction (causal chain)
111.974
EGR switchover valve vacuum control - Check electronics - ME-SFI fuel injection system
Exhaust gas recirculation valve - Check electronics - ME-SFI fuel injection system
P0410 Secondary air injection malfunction (causal chain)
Model 202 with code (923) low-pollutant D3 compressor
Model 170 with code (923) low-pollutant D3 compressor
AD07.61-P-6000-26C
P0422 Too little catalytic converter effect Three-way catalytic converter
P0440 System purge leaking (causal chain) Purge control valve actuation, ME-SFI fuel injection system electrical testing
Purge control valve vacuum control, ME-SFI fuel injection system electrical testing
Model 170
Model 202 as of 09/97
AD07.61-P-6000-31C
P0441 Purge not working Purge control valve actuation, ME-SFI fuel injection system electrical testing
Purge control valve vacuum control, ME-SFI fuel injection system electrical testing
P0442 Slight leak in system purge
Model 170
Model 202 as of 09/97
AD07.61-P-6000-31C
P0443 Purge control valve (Y58/1) Purge control valve actuation, ME-SFI fuel injection system electrical testing
P0446 A Activated charcoal canister shut-off valve (causal chain) Purge control valve vacuum control, ME-SFI fuel injection system electrical testing
Model 170 AD07.61-P-6000-31C
Model 202 as of 09/97  
Model 170 Fuel tank pressure sensor, ME-SFI fuel injection system electrical testing
B: Activated charcoal canister shut-off valve (Y58/4)  
Model 202 as of 09/97
Model 170
AD07.61-P-6000-32C
Model 202 as of 09/97  
P0450 A: Fuel tank pressure sensor (B4/3) electrical fault
B: Fuel tank pressure sensor (B4/3) electrical fluctuations
Model 170
Model 202 as of 09/97
Fuel tank pressure sensor, ME-SFI fuel injection system electrical testing
Activated charcoal canister blocked
Purge monitor pressure sensor (B4/4)
111.921/944/945/974/975 up to 31.8.97
Purge monitor pressure sensor - Check electronics - ME-SFI fuel injection system
P0455 Bad leak in system purge or Fuel tank pressure sensor
Model 170
Model 202 as of 09/97
AD07.61-P-6000-31C
Model 170
Model 202 as of 09/97
Fuel tank pressure sensor, ME-SFI fuel injection system electrical testing
P0460 Fuel gauge sensor
Model 170
Model 202 as of 09/97
Read out ICI
P0500 A: Left front vehicle speed signal
Model 210 as of 06/96 with CODE 212a
AD42.00-P-4000A
B: Left rear vehicle speed signal
Model 210 as of 06/96 with CODE 471a
AD42.00-P-4000A
Model 210 as of 06/99 with CODE 472a AD42.45-P-4000A
P0507 Idle speed control Pedal value sensor signal 1 - ME-SFI idle speed control/electronic accelerator - Testing electronics
Pedal value sensor signal 2 - Check ME-SFI idle speed control/electronic accelerator electronics
Throttle valve actuator signal - Check ME-SFI idle speed control/electronic accelerator electronics
P0560 Voltage supply to ME-SFI control module (N3/10) ME-SFI control module terminal 30, ME-SFI fuel injection system electrical testing
ME-SFI control module terminal 87, ME-SFI fuel injection system electrical testing
P0565 Variable cruise control push-button switch (S40/4) Cruise control push-button switch - Check electronics - ME-SFI cruise control with variable speed limiter
P0600 CAN from ESP CAN data bus electrical testing, ME-SFI fuel injection system
P0604 A: ME-SFI control module (N3/10)
B: ME-SFI control module (N3/10)
N3/10
P0605 ME-SFI control module (N3/10) N3/10
P0700 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0702 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0715 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0720 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0730 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0740 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0743 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0748 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0753 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0758 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0763 Read out ETC control module diagnostic trouble code memory (N15/3) AD27.19-P-1000AZ
P0801 Engine and AC electric suction fan (M4/3)
CODE (580) air conditioning or with Tempmatic 
Suction-type fan control module, ME-SFI fuel injection system electrical testing
P0803 Recirculated air flap actuator (M16/7) for compressor (causal chain, measured using air mass)
Compressor
Supercharger air recirculation flap actuator - Check electronics - ME-SFI fuel injection system
P0805 Recirculated air flap actuator (M16/7) output stage
Compressor
Compressor function - Check electronics - ME-SFI fuel injection system
P0806 Magnetic compressor clutch (Y2/1)
Compressor
MAGNETIC SUPERCHARGER CLUTCH - CHECK ELECTRONICS - ME-SFI FUEL INJECTION SYSTEM
P0809 Camshaft to crankshaft angle difference Inspect basic position of camshafts
P0811 CAN from EIS CAN DATA BUS ELECTRICAL TESTING, ME-SFI FUEL INJECTION SYSTEM
P1163 Oil level indicator switch (S43) OIL LEVEL CHECK SWITCH - CHECK ME-SFI GASOLINE INJECTION ELECTRONICS
P1181 Engine/AC electrical suction-type fan (M4/3) malfunction
CODE (580) air conditioning or with Tempmatic 
SUCTION-TYPE FAN CONTROL MODULE, ME-SFI FUEL INJECTION SYSTEM ELECTRICAL TESTING
P1182 Starter relay N65 k2
Starter relay K40/4 k2
Models 170, 208
Model 202 as of 1.6.97
Model 210 as of 1.6.98
AD07.61-P-6000-03D
P1186 Safety fuel shut-off detected Throttle valve actuator signal - Check ME-SFI idle speed control/electronic accelerator electronics
Throttle valve actuator actuation - ME-SFI idle speed control/electronic accelerator - Testing electronics
Throttle valve actuator sluggish/sticking
Check intake for residue
P1235 Recirculated air flap actuator (M16/7) output stage
Compressor
Compressor function - Check electronics - ME-SFI fuel injection system
P1236 Magnetic compressor clutch (Y2/1)
Compressor
Magnetic supercharger clutch - Check electronics - ME-SFI fuel injection system
P1386 ME-SFI control module (N3/10) anti-knock control at control limit Increased tendency to knock caused by bad fuel, coked-up combustion chambers or mechanical damage
ME-SFI control module (N3/10)
P1400 EGR switchover valve (Y27)
111.974
EGR switchover valve actuation - Check electronics - ME-SFI fuel injection system
P1420 Air pump changeover valve (Y32)
Model 202 with code (923) and low-pollutant D3 compressor
Model 170 with code (923) and low-pollutant D3 compressor
AD07.61-P-6000-25C
P1453 Air pump relay in fuse and relay module (K40/4)
111.974
with CODE (807) model year 1997
with CODE (808) model year 1998
Secondary air injection relay, ME-SFI fuel injection system electrical testing
P1491 Refrigerant pressure in AC system too high Check AC system
P1519 Camshaft timing (causal chain) Camshaft control - Check ME-SFI gasoline injection electronics
P1525 Camshaft timing solenoid (Y49) Camshaft control electromagnetic actuator - Check ME-SFI gasoline injection electronics
P1542 Pedal value sensor (B37) Pedal value sensor signal 1 - ME-SFI idle speed control/electronic accelerator - Testing electronics
Pedal value sensor signal 2 - Check ME-SFI idle speed control/electronic accelerator electronics
P1551 AC compressor shutoff output stage
Model 170 with M111.946 as of 6/98,
Model 202 with M111.921/945 as of 6/98,
Model 208 with M111.945 as of 6/98,
Model 210 with M111.942 as of 6/98
with CODE (580) air conditioning or Tempmatic
A/C compressor shutoff - Check electronics - ME-SFI fuel injection system
Wrong AC push-button control module installed
P1570 A Start test performed with locked DAS
B Fault in CAN from DAS control module to ME-SFI control module (N3/10)
C ME-SFI control module and DAS control module are incompatible
Incorrect operation
Check DAS, diagnosis manual structure
CAN data bus electrical testing, ME-SFI fuel injection system
Check control modules and part nos.
P1580 Actuator (M16/6) Throttle valve actuator signal - Check ME-SFI idle speed control/electronic accelerator electronics
Throttle valve actuator actuation - ME-SFI idle speed control/electronic accelerator - Testing electronics
P1584 Stop lamp switch
Model 210 as of 06/96 with CODE 212a
AD42.00-P-4000A
  Model 210 as of 06/96 with CODE 471a AD42.00-P-4000A
  Model 210 as of 06/99 with CODE 472a AD42.45-P-4000A
P1603 CAN from EIS CAN data bus electrical testing, ME-SFI fuel injection system
P1605 Poor road surface detection signal (by comparing wheel speeds)
Model 210 with M111 as of 06/96 except CODE 472a
Model 210 with M111 with CODE 472a
AD42.40-P-1000AZ
AD42.45-P-1000AZ
P1642 ME-SFI control module coded incorrectly (coded for MT, vehicle has AT) Check and correct variant coding
P1643 ME-SFI control module coded incorrectly (coded for AT, vehicle has MT) or no CAN transmission from ETC control module (N15/3) Check and correct variant coding
AD27.19-P-1000AZ
P1644 Transmission variant cannot be checked because of undervoltage at ETC control module (N15/3) AD27.19-P-1000AZ
P1681 Implausible crash signal
as of 06/98
Crash signal - Testing ME-SFI electrical system
P1747 A CAN fault: Transmission protection malfunction from ETC control module (N15/3)
B CAN fault: Instrument cluster
AD27.19-P-1000AZ
Check IC, communication diagnosis manual index 1