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Strange CEL Situation

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Old Dec 12, 2009 | 10:30 AM
  #1  
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Strange CEL Situation

When I started up the truck this morning it ran a little rough like I expected it to. Cold out and it was not plugged in. After it fired up I gave it some gas to try and smooth it out but that did nothing so I let off the gas and the CEL gave a quick flash. I got on the gas again and the CEL came on and stayed on after I let off the gas. I set up the code reader and got a PO122 Throttle Pedal Position Sensor switch A Circuit low input. Cleared the code started it up gave it a minute till it smoothed out then went on my way. Made it to the Home Depot and back with no CEL. So what was that all about?
 
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Old Dec 12, 2009 | 10:37 AM
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Sounds like the IVS & or the TPS were slow to respond .. may have just been too cold ...
 
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Old Dec 12, 2009 | 10:40 AM
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P0122 AP signal was less than 0.37 volts for more than 0.5 seconds.
AP = accelerator pedal.
 
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Old Dec 12, 2009 | 10:43 AM
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Where dose the signal come from?
 
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Old Dec 12, 2009 | 10:50 AM
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Originally Posted by scatgo
Where dose the signal come from?
TPS (throttle position sensor) on the go pedal.
 
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Old Dec 12, 2009 | 05:12 PM
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Originally Posted by Action4478
Sounds like the IVS & or the TPS were slow to respond .. may have just been too cold ...

My thoughts would be the batts and/or charging system are not up to par.

Bill
 
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