Ugh.. Codes P0020, P0012, P0022 and P052D! Where do I begin?

[GanderMich]

2011 Taurus SHO Eco. 60K miles. Had the codes checked at Auto Zone.. Sucks when the counter person walks up and says "Whoa...never seen this group of codes before"

Any help or direction would be greatly appreciated. I have no scan tools, but have DVM, tools and ability!

 

[Sholab1]

A good place to look up codes to start is http://repairpal.com/obd-II-code-chart
other than that someone will chime in shortly, of that I am sure.

 

[bpd1151]

Well, hate to state the obvious......

But besides the startled look of dismay on the AutoZone employee's face......

Did they not tell you what each code meant?

That'd be a great start. LOL.

 

[StealBlueSho]

Those are timing issue codes... cam shaft over retard timing on both banks...cam shaft position actuator errors...

Sounds like your timing is off.. as these are interference engines, I recommend having your car towed to a trusted mechanic or dealer.

Could of be a faulty VCT solenoid which is not too expensive to fix. Could be worse.


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[SHOdded]

Suspected Bank 2 VCT solenoid issue or solenoid wiring issue. Sometimes pins will come loose in the wiring loom to the solenoid. Start there first. Disconnect, check, clean & grease the connection, reconnect. Clear codes. See if they come back.

Also check the fuse for the solenoids. Had a case very recently it was due to faulty/burnt up fuse in the engine bay fuse box.

 

[StealBlueSho]

VCT solenoid makes a clicking noise from the engine bay when you do a cold start, reports back to the ECU the current position of the cams. If that solenoid fails or is faulty, the ECU pukes a bunch of codes... like the ones you are seeing.


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[SHOdded]

 

[SHOdded]

 

[6500rpm]

The P0020 is your tell tale code to look at, it's telling you, you have an electrical fault. Look up what you can on the web on testing, check the connection at to solenoid and circuit power and grounds you'll find listed for the diagnostics and check the resistance in the solenoid coil. If you don't have a spec, just do a compare to the good solenoid, they should be in the same ball park. All the other codes are normal for the fault. The actuators are advanced by oil pressure controlled by the solenoid. If the solenoid isn't working, the PCM is going to tell it to advance the valve timing as RPM's increase and see that nothing is happening as commanded, hense timing is ******** codes (it's just not advancing like the pcm wants it to).

 

[GanderMich]

A sincere Thank You to each of the people that replied! My thoughts were ranging from a sensor glitch to an oil supply issue... but no single problem fit the overall faults. Both banks involved, Open loop, No obvious change in engine noise... Now it makes more sense. I assume that if a VCT failure occurs one one bank, the PCM changes or defaults valve timing to both banks... or the imbalance would be catastrophic. After the vehicle sat for several hours, I crossed my fingers and fired it up. No engine light. I would almost prefer a flat out failure to an intermittent fault. Thanks to all. Now I have a starting point.

Really.. I appreciate this you guys.

From the land of FMC, Dearborn, MI.

Brian