Computer diagnostics of the petrol engine BMW M20B20 on the E34 chassis

ECU Identification

 

M20B20 with lambda-controlled mixture adaptation, manual transmission version

 

• Coding code: c09e
• Bosch hardware number: 0261200381
• Bosch software number: 1267356205
• BMW hardware number: 1730574
• BMW software number: 001
• Manufacturing code: 952

Stored Fault Codes

 

 3   EKR relay (fuel pump)

 

 7   Air flow meter

 

 28   Lambda sensor

 

 29   Vehicle speed signal

 

 

Live Data

 

 3   EKR relay: activated

 

 5   Fuel tank ventilation: activated

 

 10   Lambda mixture control: OFF

 

 40   Compressor: OFF

 

 41   Air conditioning: OFF

 

 42   Drive position P/N: activated

 

 51   Ignition timing intervention: not active

 

 52   Neutral position switch: activated

 

 53   Full load switch: OFF

 

 56   Semi-sequential fuel injection: ON

 

 

 

 

 1   Ignition advance angle: 1° BTDC

 

 6   Engine speed: 760 RPM

 

 7   Air flow meter signal: 0.260 V

 

 29   Vehicle speed: 0 km/h

 

 32   Injection signal: 5.18 ms

 

 37   ECU supply voltage: 14.78 V

 

 43   Lambda sensor voltage: 0.451 V

 

 44   Intake air temperature: 19 °C

 

 45   Engine temperature: 76 °C

 

 77   Load signal tL: 2.5 ms