P0577
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Joined: Apr 2006
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From: TX
P0577
This code showed up today and I can't find its meaning anywhere 
. Does anyone know what this is? It showed up with the APPS code P0122 and the companion code P1693. I've done the APPS reset procedure listed on this site and on my way to Auto Zone to clear the codes. Also, I was searching about the P0122 code and someone posted a link to another way of reseting the APPS but you have to be a member of that other site to view the thread, does anyone know about this other procedure? Thanks!
. Does anyone know what this is? It showed up with the APPS code P0122 and the companion code P1693. I've done the APPS reset procedure listed on this site and on my way to Auto Zone to clear the codes. Also, I was searching about the P0122 code and someone posted a link to another way of reseting the APPS but you have to be a member of that other site to view the thread, does anyone know about this other procedure? Thanks!
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From: pa
RESETTING THE APPS SENSOR.
(ACCELERATOR PEDAL POSITION SENSOR)
2ND GENERATION 24 VALVE TRUCKS ONLY.
LIST OF TOOLS NEEDED
DIGITAL VOLT METER
# 20 TORQUE BIT SOCKET
# 1 PHILLIPS
# 10 MM SOCKET
Proper service and repair procedures are vital to ensure personal safety of those performing the repairs. Standard safety procedures and precautions should be followed at all times to eliminate the personal injury or improper service, which could damage the vehicle or compromise its safety.
Although this material has been prepared with the intent to provide reliable information, no liability is assumed in reliance of this material.
It has come to my attention that a lot of people think by disconnecting & re-connecting the batteries and stepping on the throttle it is going to reset the apps, no, that is not correct. It is impossible to adjust your apps if you do not know where it is supposed to be set at. That is why you need the voltmeter.
This is the procedure I use to re-set the apps.
With the key on, engine off you need to probe the apps wire to see where your voltage is currently set at.
The best location to probe the wire is on the PCM (power control module) which is located off the passenger side of the firewall.
· You want the C1 connector, this is the connector closest to the engine,
· You want the orange wire with the dark blue tracer which is pin # 23
· Voltage should read somewhere around 0.5 volts,
· At this point the voltage reading does not matter, it just has to be accurately written down for later reference.
*** TURN THE IGNITION OFF ON THE TRUCK ***
Resetting the APPS Sensor cont. page 2
(Accelerator Pedal Position Sensor)
2nd generation 24 valve trucks only.
· The apps sensor is located slightly above and a little to the left of the injection pump.
· Remove the black plastic cover that is located by your injection pump.
The two screws that are holding it are plastic, do not put any downward pressure on them or you will never get them off.
· Un do the 6 - 10 mm headed bolts that hold the bracketry in place.
(DO NOT REMOVE THE CABLES)
You will notice the apps is on the back of the bracketry that you just removed, it is held in place by 2 - 20 bit screws. These screws have a little bit of locktite on them so make sure you have a good socket and gently give a little tap with a hammer before attempting to loosen. Be very careful these screws strip very easily and you only get one shot at them.
· On the apps you will find a white tag that gives you the information on what the apps adjustment should be.
· After loosening the screws you can rotate the apps both clockwise and counter clockwise to get the adjustment you need.
· The reading you took at the beginning of the process on pin # 23 should match the white tag on your apps, if not adjust accordingly.
(ACCELERATOR PEDAL POSITION SENSOR)
2ND GENERATION 24 VALVE TRUCKS ONLY.
LIST OF TOOLS NEEDED
DIGITAL VOLT METER
# 20 TORQUE BIT SOCKET
# 1 PHILLIPS
# 10 MM SOCKET
Proper service and repair procedures are vital to ensure personal safety of those performing the repairs. Standard safety procedures and precautions should be followed at all times to eliminate the personal injury or improper service, which could damage the vehicle or compromise its safety.
Although this material has been prepared with the intent to provide reliable information, no liability is assumed in reliance of this material.
It has come to my attention that a lot of people think by disconnecting & re-connecting the batteries and stepping on the throttle it is going to reset the apps, no, that is not correct. It is impossible to adjust your apps if you do not know where it is supposed to be set at. That is why you need the voltmeter.
This is the procedure I use to re-set the apps.
With the key on, engine off you need to probe the apps wire to see where your voltage is currently set at.
The best location to probe the wire is on the PCM (power control module) which is located off the passenger side of the firewall.
· You want the C1 connector, this is the connector closest to the engine,
· You want the orange wire with the dark blue tracer which is pin # 23
· Voltage should read somewhere around 0.5 volts,
· At this point the voltage reading does not matter, it just has to be accurately written down for later reference.
*** TURN THE IGNITION OFF ON THE TRUCK ***
Resetting the APPS Sensor cont. page 2
(Accelerator Pedal Position Sensor)
2nd generation 24 valve trucks only.
· The apps sensor is located slightly above and a little to the left of the injection pump.
· Remove the black plastic cover that is located by your injection pump.
The two screws that are holding it are plastic, do not put any downward pressure on them or you will never get them off.
· Un do the 6 - 10 mm headed bolts that hold the bracketry in place.
(DO NOT REMOVE THE CABLES)
You will notice the apps is on the back of the bracketry that you just removed, it is held in place by 2 - 20 bit screws. These screws have a little bit of locktite on them so make sure you have a good socket and gently give a little tap with a hammer before attempting to loosen. Be very careful these screws strip very easily and you only get one shot at them.
· On the apps you will find a white tag that gives you the information on what the apps adjustment should be.
· After loosening the screws you can rotate the apps both clockwise and counter clockwise to get the adjustment you need.
· The reading you took at the beginning of the process on pin # 23 should match the white tag on your apps, if not adjust accordingly.
Thread Starter
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Joined: Apr 2006
Posts: 49
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From: TX
Thanks for the info! Also, does anyone know what fuse to pull to clear the codes? Found the meaning of code P0577. It has to do with the cruise control, in case anyone else was wondering.
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Joined: Aug 2005
Posts: 171
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From: pa
I dont know if you can pull a fuse but i think if the problem is fixed code will go out in 10hr engine run time or 25 key cycles thats what i heard of, or just go to a autozone and have then clear them with the scanner for free. But no i havent heard anything about pulling a fuse.
Thread Starter
Registered User
Joined: Apr 2006
Posts: 49
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From: TX
I went to auto zone and had them put the code reader on it and nothing showed up but it still shows up on my odometer when I do the on/off thing three times. Has anyone experienced this? Which one do I trust?