DTC Detection Logic
P0091 FUEL RAIL PRESSURE CONTROL SYSTEM - DTC DESCRIPTION
| DTC | M.U.T.-III SE screen terms (Trouble diagnosis content) | DTC detection condition | ||
|---|---|---|---|---|
| P0091 | 00 | Fuel pressure regulator 1 (Fuel Pressure Regulator "A" Control Circuit Low) |
Diagnosis condition | Engine running at idle |
| Signal | PUMP signal | |||
| Threshold | ECM detects High pressure fuel pump circuit is GND short | |||
| Diagnosis delay time | 5 seconds | |||