codes read and confused
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Senior User
Joined: Aug 2007
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codes read and confused
went to the stealership today to get codes read for truck. got 3 of them here they are...
P1280:ICP circuit out of range low...
Open/grounded circuit, biased sensor, PCM
P0478: Exhaust pressure control valve high input....Plugged sensor line, stuck butterfly restricted exhaust
P0470: Exhaust back pressure sensor circuit malfunction...Biased sensor, open signal return
i dont fully understand what these mean... the back pressure sencor not working might be cause i dont have any backpressure with the straip pipe but if these are easly fixed by someone with limited knowledge then i can do them...if they even need replace... and whats and ICP any help would be much appreciated thanks
P1280:ICP circuit out of range low...
Open/grounded circuit, biased sensor, PCM
P0478: Exhaust pressure control valve high input....Plugged sensor line, stuck butterfly restricted exhaust
P0470: Exhaust back pressure sensor circuit malfunction...Biased sensor, open signal return
i dont fully understand what these mean... the back pressure sencor not working might be cause i dont have any backpressure with the straip pipe but if these are easly fixed by someone with limited knowledge then i can do them...if they even need replace... and whats and ICP any help would be much appreciated thanks
Fleet Mechanic
Joined: Sep 2006
Posts: 1,329
Likes: 0
From: IN
ICP is Injection control pressure you have a sensor towards the front drivers side of the engine that tells the PCM injection pressure.
As for the EBPS the line is more than likely stopped up and needs to be cleaned. Here is a link on how to do the job.
http://guzzle.rbmicro.com/ebps.html
As for the EBPS the line is more than likely stopped up and needs to be cleaned. Here is a link on how to do the job.
http://guzzle.rbmicro.com/ebps.html
