I have a 04 F150 5.4L that gave me P0340, P0010 and P0012. It idles great but when you go to take off it starts running really rough, so I replaced the VCT solenoids. That got rid of the the P0340 and P0010 codes but the P0012 is still there. I tryed to drive it and it started to run really rough still. Oil Pressure is good. Any Ideas what could be wrong?

 

P012 = "Intake Valve Cam Timing Over Retarded, Bank One"

$900 to replace the passenger side cam phaser, had it done myself awhile back. They'll try to clip you for $2,000 if you just take it in and say fix it. Get a written estimate on the cost to replace the passenger side cam phaser, should be around $900.

If you have the time and skill you can try it yourself, there are some posts on how to do it.

 

Thanks I will look into that!

 

first of all i bought this truck and one plug was broke off.took it to the shop and they changed them all.a few months later the engine light came on and read 02 sensor..changed out 2 of them,about 3 months later i was driving and lost power heard some kinda noise and began to shake.drove it home without much power,this is the codes it read.

p0012-camshaft position timing over retarted bank 1
p0021-camshaft position timing overadvancedor system performance bank2
poo300-random/multipltle cylinder misfire
po325-knock sensor 1 circuit malfunction bank 1 or single sensor
po353-ignition coil C primary/secondary circuit malfunction
po358-ignition coil H primary/secondary circuit malfunction
po316-misfire detected on start up
po352-ignition coil B primary/secondary circuit malfunction
p1000-

please help..tell me where to start.i know one can throw another off but i am lost at this.......thanks

 

Most likely the cam timing issue is causing the misfire codes. I would start with the p0012 and p0021 first. What is the history of the truck? What maintenance has been done? Could be VCT solenoids, cam phasers, oil pressure problem, or other timing components.
Here is info for p0012.
The powertrain control module (PCM) monitors the variable camshaft timing (VCT) position
for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a
maximum calibrated value or remains in a retarded position.
Causes
-Camshaft timing improperly set
- Continuous oil flow to the VCT piston chamber
- VCT solenoid valve stuck open
- Camshaft advance mechanism binding (VCT unit)

P0021 is over advanced cam bank 1. Causes are the same as the p0012.

Kev

 

Guys - need help bad - I have a 05 F150 FX4 that called out the p0012 code. My mechanic (very good and very trusted) tore the engine apart and found the timing guides had disintegrated. Chain hadn't come off. He got a replacement kit and put it all back together but it is still showing a p0012 error. He has torn the engine apart 3 times now trying to figure it out. The truck runs ok cold but as soon as it gets warm, it has in inconsistent idle. He hasn't given up but is at his wits end with this. He has check the oil pan for debris, check the VCT and it seems to be working fine.... He can't grasp the fact that I need a new engine and is willing to look at any potential issue. Can someone please shed any light or possible issues?

 

Have you figured out this issue mine is doing the same thing and I'm about ready to pull my hair out any help would be greatly appreciated

 

Just had my 05 apart and the guides were broken. I don't know how long they had been like that. But all the things these guys talk about.. spark plugs .. the coil packs phasers and the cvts all can be issues. Like someone told me today ! You can keep screwing with or get something else.