It also has not been driven in about 2 weeks. The fuel in the tank is below 1/4 mark, however still what I would consider fresh. The car idles fine, seems to respond to light throttle fine, started with no problem and there are really no strange noises. P1233 which I am having a little harder time with. P1000 which is typical and to be expected? Pulled back into the garage, plugged in the SCT tuner and codes were as follows. Warmed it up to operating temperature and then jumped in to back out of the garage. Let it warm up and then decided I would take it into work instead of the truck. In some cases, faulty factory crimps at the relay box could be causing this issue.Started the car this morning in preparation for an evening appointment with it. If the problem persists, technicians will now test the wiring crimp connectors. If there is sufficient power, they will re-jumper the relay contacts and then check for power coming from the fuse box and straight to the pump. If that doesn’t fix the problem, technicians will now check for power coming into the relay. If the connector is not getting power, technicians will pull the fuel pump relay (or change I with another relay with the same part number) or jumper the relay contacts to power the pump.
If both things still don’t work, technicians will check for power at the fuel pump connector. Next, they reset the inertia switch manually.
To check for this code, technicians usually start by checking the fuel pump fuse. Poor electrical connection in FDPM (Fuel Pump Driver Module) circuit.Open or shorted FDPM (Fuel Pump Driver Module) harness.Faulty IFS (Inertia Fuel Shutoff) switch.IFS (Inertia Fuel Shutoff) switch needs to be reset.Some of the most common possible causes include:
If this fails (the PCM stops receiving the duty signal), then the Error Code P1233 will set.Īs said earlier, this error code could be caused by a lot of factors. With the key on, the FDPM sends duty cycle signal to the PCM continuously through FPM circuit. The PCM (Powertrain Control Module, also known as ECM or engine control module in other vehicles makes) monitors the FPM (Fuel Pump Monitor) circuit from the FDPM (Fuel Pump Driver Module).
The most common symptom and usually the only symptom for this error code is the activation of the Check Engine light and the registration of the error code. This could be caused by two primary reasons that interfere with fuel pump startup – the fuel pump relay, or the inertia switch. DefinitionĮrror Code P1233 is set when the fuel pump is not starting up correctly. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another. This error code is a generic trouble, meaning it applies to all vehicles equipped with OBD-II system, especially vehicles made since 1996 up to present. This means the fuel pump is not starting up correctly, which could be caused by problems with the FPDM (fuel pump driver module). All Others: The PCM monitors the fuel pump monitor (FPM) circuit from the fuel pump driver module (FPDM).
Refer to the Workshop Manual Section 413-01 for diagnostics.
With the key on, the FPDM continuously sends a duty cycle signal to the PCM through the FPM circuit. P1233 - Fuel System Disabled or Offline LS6/LS8: For LS6/LS8, P1233 indicates the PCM is not receiving the fuel level information on SCP from the rear electronics module (REM). Error Code P1233 is defined as Fuel Pump Driver Module Disabled Or Off Line. P1233 FORD code description The Powertrain Control Module monitors the Fuel Pump Monitor (FPM) circuit from the Fuel Pump Driver Module (FPDM).