Fault code description - ME-SFI - misfires - AD07.61-P-4000-11M
| Misfire, emission limit | ||
|---|---|---|
| 1 | Fault code | P2043 Sum (P0300) |
| (Fault code according to OBD) | P2044 Misfires on cylinder 1 (P0301) P2045 Misfire at cylinder 5 (P0305) P2046 Misfiring at cylinder 3 (P0303) P2047 Misfire at cylinder 6 (P0306) P2048 Misfire at cylinder 2 (P0302) P2049 Misfire at cylinder 4 (P0304) P204A Misfire at cylinder 7 (P0307) P204B Misfire at cylinder 11 (P0311) P204C Misfire at cylinder 9 (P0309) P204D Misfire at cylinder 12 (P0312) P204E Misfire at cylinder 8 (P0308) P204F Misfire at cylinder 10 (P0310) |
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| 2 | Fault storage | After expiry of test duration and fault |
| Actuation of engine diagnosis indicator lamp (EURO4) or CHECK ENGINE (MIL) |
Following two successive driving cycles with faults | |
| 3 | Checking frequency | Continuous |
| 4 | Checked signal or status | Number of recognized combustion misfires |
| 5 | Fault setting conditions | |
| Limit value for emission limit | Maximum of 100 to 152 combustion misfires within 1000 engine revolutions, dependent on the coolant temperature (e.g. 100 misfires at operating temperature) according to the performance map | |
| 6 | Check prerequisites |
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| 7 | If too many misfires occur at a cylinder, the cylinder is cut off (cylinder selective fuel shutoff). Misfires through faults in the ECI ignition system If ignition does not take place misfiring occurs. If in addition to misfiring faults there are also ECI faults stored, then start the troubleshooting Begin ECI ignition system. ECI faults are not, however, always stored at the same time. If a cylinder does not fire (compare current ion current signals) then check line with the ignition trigger signals between ECI ignition module and ME-SFI [ME] control unit for discontinuity. Misfires due to fuel starvation If combustion misfires are recognized, another fault code P203A (P0460) is output if the level in the fuel tank is too low. This information indicates combustion misfires due to fuel starvation. A lack of fuel pressure can be the cause (e.g. if the fuel filter is clogged, fuel pump, fuel pump control unit or fuel pressure sensor defective). Misfiring because of miscellaneous causes Combustion misfires may be caused by many faults in the injection system. Usually in this case other component or function faults are stored, in addition to the misfire fault. The cause may also be due to faults in the engine mechanics. |