P0148 causes?
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Tuned
Joined: Jan 2006
Posts: 293
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P0148 causes?
Anyone know what some possibile causes are for this code? Starts and runs fine although maybe slight power loss. Fuel PSI is around 73-79. Code sets itself even when the truck is off. I cleared it with KOEO and it came right back before I started the truck. Something strange is goin on...
Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
Anyone know what some possibile causes are for this code? Starts and runs fine although maybe slight power loss. Fuel PSI is around 73-79. Code sets itself even when the truck is off. I cleared it with KOEO and it came right back before I started the truck. Something strange is goin on...
http://ww2.justanswer.com/uploads/as...005_ANSWER.pdf
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Exact code definition states that actual RPM's exceed requested RPM's (by the PCM) which can be caused by an alternative fuel source, CKP or CMP interference (electrical) or a faulty PCM.
In other words, something is making your engine run faster than the PCM wants it to OR something is telling the PCM the engine is running faster than it's supposed (whether this is really happening or not).
I, personally, would like a little more indepth explanation of what actually sets this code, but it sounds like, in your case, that it's electrical to me.
In other words, something is making your engine run faster than the PCM wants it to OR something is telling the PCM the engine is running faster than it's supposed (whether this is really happening or not).
I, personally, would like a little more indepth explanation of what actually sets this code, but it sounds like, in your case, that it's electrical to me.
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Tuned
Joined: Jan 2006
Posts: 293
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Code was set on my Edge Evolution as well as Autoenginuity. I set the Evolution back to stock and cleared the code today and it hasn't come back. I'll drive it a bit and see if it returns. Thanks for the input....
Hotshot
Joined: Apr 2010
Posts: 19,061
Likes: 238
From: Saratoga Springs,UT
Exact code definition states that actual RPM's exceed requested RPM's (by the PCM) which can be caused by an alternative fuel source, CKP or CMP interference (electrical) or a faulty PCM.
In other words, something is making your engine run faster than the PCM wants it to OR something is telling the PCM the engine is running faster than it's supposed (whether this is really happening or not).
I, personally, would like a little more indepth explanation of what actually sets this code, but it sounds like, in your case, that it's electrical to me.
In other words, something is making your engine run faster than the PCM wants it to OR something is telling the PCM the engine is running faster than it's supposed (whether this is really happening or not).
I, personally, would like a little more indepth explanation of what actually sets this code, but it sounds like, in your case, that it's electrical to me.
where did you find this Tim????
I must of looked at wrong list
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
It's in the 2005 and up 6.0 bible code list.
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