EGR [ARF] pressure transducer, ME-SFI fault code description - AD07.61-P-4000-51AA
| EGR [ARF] vacuum transducer | ||
| 1 | Fault code ( |
P2027 (P0403) |
| 2 | Fault storage | After expiry of test duration and fault |
| Activation of the engine diagnosis indicator lamp (EURO3/4) or CHECK ENGINE (MIL) malfunction indicator lamp |
Following two successive drive cycles with faults | |
| 3 | Checking frequency | Continuous |
| 4 | Checked signal or status | Current/ voltage test at EGR [ARF] pressure transducer |
| 5 | Fault setting conditions Limit values |
|
| Short circuit to ground | Voltage lower than 2,5 volts | |
| Short-circuit to +12 V | Current higher than 4,2 amps | |
| Open circuit in wiring | No voltage at EGR [ARF] pressure transducer Approx. 4 to 8 V at output of ME-SFI control unit under no load. |
|
| 6 | Check prerequisites | Battery voltage between 8 and 17 V |
| 7 | A check is performed for a line interruption and short-circuit (to ground or battery voltage). A short circuit to ground and a line interruption will be detected when the output stages are locked, while a short circuit to the battery voltage is detected when the output stages are conducting. The output stage is immediately no longer activated when a fault arises. |