Computer diagnostics of the petrol engine M20B25 on BMW E30

Computer diagnostics of the M20B25 engine on BMW E30

ECU Identification

 

M20B25 without lambda-controlled mixture adaptation, manual transmission version for US market

 

  • Coding code: a85e
  • Bosch hardware number: 0261200380
  • Bosch software number: 1267356204
  • BMW hardware number: 1730576
  • BMW software number: 001
  • Manufacturing code: 952

 

 

ECU identification window DME 0261200380 (code A85E) on M20B25 without lambda control

Stored Fault Codes

 

 54   Torque converter lockup clutch

 

 

Fault list in DIS: code 54 - torque converter lockup clutch fault

Live Data

 

 3   EKR relay: activated

 

 5   Fuel tank ventilation: not activated

 

 10   Lambda mixture control: inactive

 

 40   Compressor: OFF

 

 41   Air conditioning: OFF

 

 42   Transmission selector 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

 

 

DIS live-data group 1: system statuses (EKR, lambda, A/C, P/N, injection)

 

 

 1   Ignition advance angle: 9° BTDC

 

 6   Engine speed: 760 RPM

 

 7   Air flow meter signal: 0.213 V

 

 29   Vehicle speed: 0 km/h

 

 32   Injection signal: 4.64 ms

 

 37   ECU supply voltage: 14.44 V

 

 43   Lambda sensor voltage: 0.447 V

 

 44   Intake air temperature: 31 °C

 

 45   Engine temperature: 89 °C

 

 77   Load signal tL: 2.2 ms

 

 

DIS live-data group 2: numerical parameters (ignition timing, RPM, AFM voltage, injection time, temperatures)