P0016 question.

[Simmons]

I used my Snap-on scanner to look at both intake cams at the same time.

On initial start up the cams are 8 degrees apart. Once the computer demands changes and you start driving they are pretty equal.

On the 2nd start up, the cams are 8 degrees different again,....and when you start driving it goes into a limp mode and you get the same P0016 code.

So does it make sense it would be the cam gear?


The cam gear and computer were changed 2 years and 20k miles ago.

Thanks

[kinghurl]

Hey Eric, if cam gears were updated, it's unlikely to be them. The usual suspects in order are sensors, OCVs, Cam gears then ECU. Lots of trial and error. This is the passenger side, so swapping w drivers side is the fastest way.

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[Simmons]

Originally Posted by kinghurl

Hey Eric, if cam gears were updated, it's unlikely to be them. The usual suspects in order are sensors, OCVs, Cam gears then ECU. Lots of trial and error. This is the passenger side, so swapping w drivers side is the fastest way.

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I already swapped the sensors, then the OCV's......still comes up with the same code.

It's at the dealer,.....they said Toyota told them to replace the cam gear and computer again.

Simmons

[kinghurl]

Yeah that sucks, but after having JUST gone through it and initially NOT replacing ecu(just kept clearing code which returns after 2 drive cycles, due to learning values in ecu not changing fast enough), apparently, there is a flaw-my belief- in the ecu design where it takes forever(up to 5K miles). Better to change the ecu. If you don't mind waiting for ecu to relearn, and don't mind the possible performance hit when/if timing is pulled, you could save the $$, but some of us are not cut out for that kind of patience with our equipment eh?

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[Simmons]

Originally Posted by kinghurl

Yeah that sucks, but after having JUST gone through it and initially NOT replacing ecu(just kept clearing code which returns after 2 drive cycles, due to learning values in ecu not changing fast enough), apparently, there is a flaw-my belief- in the ecu design where it takes forever(up to 5K miles). Better to change the ecu. If you don't mind waiting for ecu to relearn, and don't mind the possible performance hit when/if timing is pulled, you could save the $$, but some of us are not cut out for that kind of patience with our equipment eh?

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So when they replace the ECU and cam gear, it should be ok?

It's still under warranty.

Simmons

[kinghurl]

Yes. They follow their repair procedure and all should be well.

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