| Computer Trouble Codes | ||||||||||
| Computer Trouble Codes | ||||||||||
| 1990-1993: W201 with 2.3L M102 engine | ||||||||||
| Flashes | Fault | |||||||||
| 1 | No System Malfunction | |||||||||
| 2 | Throttle Valve Swttch | |||||||||
| 3 | Coolant Temperature Sensor | |||||||||
| 4 | Airflow Sensor Position Indicator | |||||||||
| 5 | Oxygen Sensor | |||||||||
| 6 | NotUsed | |||||||||
| 7 | Td Signal | |||||||||
| 8 | Altitude Correction Capsule | |||||||||
| 9 | Electro-Hydraulic Actuator (EHA) | |||||||||
| 10 | Throttle Valve Switch and/or Idle Speed Contact | |||||||||
| 11 | NotUsed | |||||||||
| 12 | EGR Temperature Sensor | |||||||||
| 1991-??: W124, and W202 with 2.8L & 3.2L M104 engines [W129 & W140?] | ||||||||||
| Flashes | Fault | - | ||||||||
| 1 | No faults in system | |||||||||
| 2 | Oxygen Sensor Inoperative | |||||||||
| 3 | Lambda Control Inoperative | |||||||||
| 4 | Air Injection inoperative | |||||||||
| 5 | Exhaust Gas Recirculation (EGR) inoperative | |||||||||
| 6 | Idle Speed Control Inoperative | |||||||||
| 7 | Ignition System Failure | |||||||||
| 8 | Coolant Temperature Sensor - Open Or Short Circuit | |||||||||
| 9 | lntake Air Temperature Sensor - Open Or Short Circuit | |||||||||
| 10 | Voltage At Air Mass Sensor Too High Or Low | |||||||||
| 11 | TN (RPM) Signal Defective | |||||||||
| 12 | Oxygen Sensor Heater Open Or Short Circuit | |||||||||
| 13 | Camshaft Position Sensor Signal From - EZLJAKR Ignition Control Unit Defective | |||||||||
| 14 | Intake Manifold Pressure At Start Too Low | |||||||||
| 15 | Full Throttle Information Defective | |||||||||
| 16 | Idle Speed Information Defective | |||||||||
| 17 | Controller Area Network (CAN) Data Exchange - Malfunction Between Control Units | |||||||||
| 18 | Adjustable Camshaft Timing Solenoid - Open Or Short Circuit | |||||||||
| 19 | Fuel Injectors- Open Or Short Circuit, or Emission Control System Adaptation at Limit | |||||||||
| 20 | Speed Signal Missing | |||||||||
| 21 | Purge Switchover Valve - Open Or Short Circuit | |||||||||
| 22 | Camshaft Position Sensor Signal Defective | |||||||||
| 23 | Intake Manifold Pressure With Engine Running Too Low | |||||||||
| 24 | Starter Ring Gear Segments Defective | |||||||||
| 25 | Knock Sensors Defective | |||||||||
| 26 | Upshift Delay Switch over Valve - Open Or Short Circuit | |||||||||
| 27 | Coolant Temperature Sensor Deviation Between Sensor Circuit No. 1 and Sensor Circuit No. 2 | |||||||||
| 28 | Coolant Temperature Sensor (Coolant Temperature Change Monitor) | |||||||||
| 1991-1993: W124, W126 & W201 with 2.6L & 3.0L M103 engines | ||||||||||
| Flashes | Fault | |||||||||
| 1 | No faults in system | |||||||||
| 2 | Throttle Valve Switch (Full Throttle Contact) | |||||||||
| 3 | Coolant Temperature Sensor | |||||||||
| 4 | Airflow Sensor Potentiometer | |||||||||
| 5 | Oxygen Sensor | |||||||||
| 6 | Not assigned | |||||||||
| 7 | TNA (Engine RPM) Signal | |||||||||
| 8 | Altitude Pressure Signal From EZL Ignition Control Unit | |||||||||
| 9 | Current To Electro-hydraulic Actuator | |||||||||
| 10 | Throttle Valve switch (Idle Contact) | |||||||||
| 11 | Air Injection System | |||||||||
| 12 | AbsoIute Pressure Valves From EZL Ignition Control Unit | |||||||||
| 13 | Intake Air Temperature Signal | |||||||||
| 14 | Road Speed Signal At CIS-E Control Unit | |||||||||
| 15 | Not assigned | |||||||||
| 16 | Exhaust Gas Recirculation (EGR) | |||||||||
| 17 | Oxygen Sensor Signal | |||||||||
| 18 | Current To Idle Speed Air Valve | |||||||||
| 19 | Not assigned | |||||||||
| 20 | Not assigned | |||||||||
| 21 | Not assigned | |||||||||
| 22 | Oxygen Sensor Heating Current | |||||||||
| 23 | Short Circuit To Positive In Regeneration Switch over Valve Circuit | |||||||||
| 24 | Not assigned | |||||||||
| 25 | Short Circuit To Positive in Start Valve Circuit | |||||||||
| 26 | Short Circuit To Positive In Shift Point Retard Circuit | |||||||||
| 27 | Data Exchange Fault Between CIS-E Control Unit and EZL ignition Control Unit | |||||||||
| 28 | Loose Contact In Coolant Temperature Sensor Circuit | |||||||||
| 29 | Difference In Coolant Temperatures Between CIS-E Control Unit and EZL Ignition Control Unit | |||||||||
| 30 | Not assigned | |||||||||
| 21 | Loose Contact In Intake Air Temperature Sensor Circuit | |||||||||
| 32 | Not assigned | |||||||||
| 33 | Not assigned | |||||||||
| 34 | Faulty Coolant Temperature Sensor Signal from EZL Ignition Control Unit | |||||||||