What does p1280 mean on a Ford truck?
What does p1280 mean on a Ford truck?
Typically, the P1280 means the PCM detected too low a value from the ICP sensor and it’s ignoring the sensor. When that happens, the ICP psi reading is inferred and the psi value reported is meaningless. 0.24 volts is what I’d expect to see with the key on and not cranking the engine. That’s why I suspect you have no hydraulic pressure.
How to change the ICP on a 1994 Ford F350?
Description: This is a short video on how to change the ICP on a T444E 7.3L Turbo Diesel engine. They are typically found in the 1994 to 2003 F250-F350 Series Ford Trucks or E250-E350 Series Vans. – Idle that seemed to have a miss. – Oil on the driveway. It turns out it was the ICP leaking inside the connector. – Low power from a stop.
Where is the deflection on pin 87 on a Ford truck?
If resistance is lower here, repair short to ground in signal wire circuit 812 (DB/LG). If the resistance is off on the earlier ohm test, you’ve got a short in that wire between the ICP & PCM connector. Well pins 90 and 91 are less than 5 ohms. Pin 87 has no deflection on the meter, so I guess that is where my problem lies, some where in that wire?
What causes ICP sensor to decrease during operating condition?
If fuel pressure is maintained and the inlet vacuum is “ok” during the operating condition, if the ICP sensor voltage decreases and the IPR duty cycle % increases, suspect a possible intermittent malfunction of the IPR solenoid, IPR wiring harness or high pressure oil pump.
Typically, the P1280 means the PCM detected too low a value from the ICP sensor and it’s ignoring the sensor. When that happens, the ICP psi reading is inferred and the psi value reported is meaningless. 0.24 volts is what I’d expect to see with the key on and not cranking the engine. That’s why I suspect you have no hydraulic pressure.
Description: This is a short video on how to change the ICP on a T444E 7.3L Turbo Diesel engine. They are typically found in the 1994 to 2003 F250-F350 Series Ford Trucks or E250-E350 Series Vans. – Idle that seemed to have a miss. – Oil on the driveway. It turns out it was the ICP leaking inside the connector. – Low power from a stop.
If resistance is lower here, repair short to ground in signal wire circuit 812 (DB/LG). If the resistance is off on the earlier ohm test, you’ve got a short in that wire between the ICP & PCM connector. Well pins 90 and 91 are less than 5 ohms. Pin 87 has no deflection on the meter, so I guess that is where my problem lies, some where in that wire?
If fuel pressure is maintained and the inlet vacuum is “ok” during the operating condition, if the ICP sensor voltage decreases and the IPR duty cycle % increases, suspect a possible intermittent malfunction of the IPR solenoid, IPR wiring harness or high pressure oil pump.
