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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1784 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P1236 - Fuel Pump Control Out Of Range

P1236 - Fuel Pump Control Out Of Range

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P1236 - FUEL PUMP CONTROL OUT OF RANGE

Description:  This DTC indicates the fuel pump driver module 2 (FPDM2) detected an invalid or missing fuel pump (FP) duty cycle signal on the fuel pump control (FPC) circuit from the powertrain control module (PCM). The FPDM2 sends a message to the PCM through the fuel pump monitor 2 (FPM2) circuit, indicating this concern was detected. The PCM sets the DTC when the message is received.
Possible Causes: 
  • FPC circuit open or short
  • Damaged FPDM2
  • Damaged PCM
Diagnostic Aids:  The FPDM2 sends a 25% duty cycle (250 ms on, 750 ms off) through the FPM2 circuit to the PCM while the concern is being detected by the FPDM2. If the concern is no longer detected, the FPDM2 returns to sending an all OK (50% duty cycle) message to the PCM.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST KB .
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