DTC P1641: Fuel Pump Primary Circuit Malfunction.
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P1641 - FUEL PUMP PRIMARY CIRCUIT MALFUNCTION.
| For Vehicles Equipped With a FPDM | |||
| Description: | See the description for DTC P1235 /P1236 . | ||
| Possible Causes: | See the possible causes for P1235 /P1236 . | ||
| Diagnostic Aids: | See the diagnostic aids for DTC P1235 /P1236 . | ||
| For All Others | |||
| Description: | See the description for DTC P0230 . | ||
| Possible Causes: | See the possible causes for DTC P0230 . | ||
| Diagnostic Aids: | See the diagnostic aids for DTC P0230 . | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Vehicles Equipped With a FPDM | GO to KB: Fuel Pump Driver Module STEP KB19. | ||
| Excursion | GO to KA: Fuel Pump (FP) Relay STEP KA31. | GO to KA: Fuel Pump (FP) Relay STEP KA31. | GO to KA: Fuel Pump (FP) Relay STEP KA60. |
| All others | GO to KA: Fuel Pump (FP) Relay STEP KA1. | GO to KA: Fuel Pump (FP) Relay STEP KA1. | GO to KA: Fuel Pump (FP) Relay STEP KA30. |