Danger | Risk of death. Death may occur if body parts are drawn into rotating vehicle parts. | Do not insert your hand into rotating parts. Wear closed and snug-fitting work clothes. Secure area of rotating vehicle components against unauthorized access. | |
Danger | Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | |
Danger | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. | |
Topical note | Notes on avoiding damage to ignition system | Engine 120mit Benzin-Einspritzanlage LH | |
Connecting hand-held tester (HHT), reading fault memory | |||
Gasoline injection and ignition system (ME-SFI) - Diagnosis - Previous knowledge | Check, regulate engine | ||
Notes on ME-SFI diagnostic trouble code memory | |||
| It is not possible to read out fault code with pulse counter | ||
| Icon for emissions-relevant faults that result in the actuation of the CHECK-ENGINE indicator lamp in USA vehicles. This is only actuated when the tests have been carried out and faults were detected. | ||
| Ignition ON | ||
Fault memory | |||
Fault code | Fault text | Possible cause/note | Remedy |
No fault detected | Depending on the complaint case, perform a complete ME-SFI [ME] electrics check | ||
| Right hot film mass air flow sensor (B2/7) | ||
ME-SFI [ME] fault code description: Hot film MAF sensor | |||
| Pressure sensor RH (B28/2) | | |
ME-SFI [ME] fault code description: Pressure sensor | | ||
| Intake air temperature sensor RH (B17/6) | ||
ME-SFI [ME] fault code description: Intake air temperature sensor | |||
| Coolant temperature sensor RH (B11/10) | ||
ME-SFI [ME] fault code description: Coolant temperature sensor | |||
| Actual value potentiometer in actuator RH | ||
ME-SFI [ME] fault code description: Actual value potentiometer in throttle valve actuator | |||
| Lambda sensor RH upstream of catalytic converter (G3/4) | ||
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| A Lambda sensor RH upstream of catalytic converter (G3/4) aging correcting factor exceeded | ||
ME-SFI [ME] fault code description: Aging lambda sensor upstream of catalytic converter | with CODE (620a) vehicles with catalyst technology | ||
| Lambda sensor heater of lambda sensor RH upstream of catalytic converter (G3/4) | ||
ME-SFI [ME] fault code description: Lambda sensor heater | |||
| Lambda sensor RH downstream of catalytic converter (G3/6) | | |
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| Lambda sensor RH upstream of catalytic converter (G3/4) | ||
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| Lambda sensor heater of lambda sensor RH downstream of catalytic converter (G3/6) | | |
ME-SFI [ME] fault code description: Lambda sensor heater | |||
| Lambda sensor LH upstream of catalytic converter (G3/3) | ||
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| A Lambda sensor LH upstream of catalytic converter (G3/3) aging correcting factor exceeded | ||
ME-SFI [ME] fault code description: Aging lambda sensor upstream of catalytic converter | with CODE (620a) vehicles with catalyst technology | ||
| Lambda sensor heater of lambda sensor LH upstream of catalytic converter (G3/3) | ||
ME-SFI [ME] fault code description: Lambda sensor heater | |||
| Lambda sensor LH downstream of catalytic converter (G3/5) | | |
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| Lambda sensor LH upstream of catalytic converter (G3/3) | ||
ME-SFI [ME] fault code description: Lambda sensor signal | |||
| Lambda sensor heater of lambda sensor LH downstream of catalytic converter (G3/5) | | |
ME-SFI [ME] fault code description: Lambda sensor heater | |||
| A Self-adjustment of "partial load" mixture formation at limit value of ME-SFI [ME] control unit RH (N3/12) | Unmetered air, fuel pressure regulator injection valves, engine wear | |
ME-SFI [ME] fault code description: Self-adjustment of mixture formation at limit value | with CODE (620a) vehicles with catalyst technology | ||
| A Self-adjustment of "partial load" mixture formation at limit value of ME-SFI [ME] control unit LH (N3/11) | Unmetered air, fuel pressure regulator injection valves, engine wear | |
ME-SFI [ME] fault code description: Self-adjustment of mixture formation at limit value | with CODE (620a) vehicles with catalyst technology | ||
| Injection valve (Y62y1) cylinder 1 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y2) cylinder 2 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y3) cylinder 3 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y4) cylinder 4 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y5) cylinder 5 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y6) cylinder 6 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y7) cylinder 7 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y8) cylinder 8 | ||
ME-SFI [ME] fault code description: Injection valves | |||
| Injection valve (Y62y9) cylinder 9 | ||
ME-SFI [ME] fault code description: Injection valves |
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