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D T C codes
Mercedes-Benz Diagnostic Trouble Codes (DTC) for 1996+ models

Circuit Malfunction
P0466 Purge Flow Sensor Circuit Range/Performance
P0467 Purge Flow Sensor Circuit Low Input
P0468 Purge Flow Sensor Circuit High Input
P0469 Purge Flow Sensor Circuit Intermittent
P0470 Exhaust Pressure Sensor Malfunction
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
P0560 System Voltage Malfunction
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High
P0565 Cruise Control On Signal Malfunction
P0566 Cruise Control Off Signal Malfunction
P0567 Cruise Control Resume Signal Malfunction
P0568 Cruise Control Set Signal Malfunction
P0569 Cruise Control Coast Signal Malfunction
P0570 Cruise Control Accel Signal Malfunction
P0571 Cruise Control/Brake Switch A Circuit ,,,,,,,,,,,,,,
P0818 Driveline Disconn. Switch Input
P0820 Gear Lever X-Y Sensor Circuit
P0821 Gear Lever X Sensor Circuit
P0822 Gear Lever Y Sensor Circuit
P0823 Gear Lever X Sensor Circuit Intermittent Ckt
P0824 Gear Lever Y Sensor Circuit Intermittent Ckt
P0830 Clutch Position Switch A Circuit Malfunction
P0831 Clutch Position Switch A Circuit Low
P0832 Clutch Position Switch A Circuit High
P0833 Clutch Position Switch B Circuit Malfunction
P0834 Clutch Position Switch B Circuit Low
P0835 Clutch Position Switch B Circuit High
P0836 4 Wheel Drive Switch Circuit Malfunction
P0837 4 Wheel Drive Switch CKT ,,,,,,,,,,,,,,,,,,,,,,,,,,
B1000 HRA Headlamp range adjustment: Supply voltage of the control unit is too low
B1004 LCP Lower Control Panel: Control unit does not match vehicle type
B1056 Automatic Air Conditioning: Problem in CAN communication with control unit
B1213 If seat memory installed: ext left rearview mirror voltage faulty
B1214 If seat memory installed: ext right rearview mirror voltage faulty
B1226 In-car temperature sensor (B10/4)
B1227 Outside temperature indicator temp sensor (014)
B1128 Heater core temperature (B10/1)
B1229 Heater core temperature (B10/1)
B1230 Evaporator temperature sensor (B10/6)
B1231 ECT sensor (B11/4)
B1232 Refrigerant pressure sensor (B12)
B1233 Refrigerant temperature sensor (B12/1)
B1234 Sun sensor (B32)
B1235 Emissions sensor (B31)
B1241 Refrigerant Fill
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For other codes please C O N T A C T - U S
Fault codes for Bosch and Simtec Mpi main engine ECU

The warning lamp will illuminate when the ignition is turned on, but will go out as soon as the engine is started.
It will, however, stay on if the ecu detects a fault with the engine.
If it is a serious fault the ecu will switch to an emergency programme, and allow the vehicle to be driven to a garage for repair.

To activate fault codes, connect wire A and B of the 10 pin diagnostic plug. Fault codes will display as flashes -
with code 12 being 1 flash, 13 being 2 and so on.

To erase the fault code, turn the ignition on/off
25 times.

Otherwise disconnect the battery earth lead for at least a minute. This will, however, erase the memory
from other electronic units

CODE             FAULT
12                 Diagnosis initiated
14 & 15        Coolant temperature sensor (Voltage Low & Highrespectively)
16 & 17        Knock Sensor 1&2 respectivley. (No voltage charge)
18                 Knock control unit (no signal)
19                 Crankshaft sensor (incorrect signal)
21 & 22        Throttle position sensor (voltage high & low respectively)
23                 Knock control module
24                 Vehicle speed sensor (no signal)
25 - 29         Injector valve 1-5 respectively (voltage high)
31                Crankshaft sensor (no signal)
32                Injector valve 6 (voltage high)
33 & 34        EGR valve (voltage low and high respectively)
35                 Idle speed control valve
37                 Fault code light (voltage low)
38 & 39        Lambda senor (voltage low and high respectively)

    for other  codes please C O N T A C T - U S

EOBD Fault codes

Fuel air ratio...................... P0100 - P0199

Fuel air ratio...................... P0200 - P0298

Ignition................................ P0300 - P0389

Emission control.............. P0400 -P0492

Idle control, & inputs....... P0500 - P0570

Serial link & outputs ........P0600 - P0665

Transmission control .....P0700 - P0799

Transmission control .....PO800 - PO849

If you have any Problems with codes PLEASE
C O N T A C T - U S