09 Sienna P0335 After Valve Covers
Vehicle came in for a valve cover reseal, after another tech did the job , CEL came on with code p0335. Checked all the obvious. -Checked for any loose connections or any missing grounds -Check resistance cold and hot of sensor -Checked short to ground and power on both wires -Removed compressor and got connector out, checked for connectors damage/pin issue. Pins look good and connecter sits in place good -Checked sensor placement on block- good -Scoped sensor at connector at ecm. Waveform looks clean. Sometimes vehicle will set code in the bay idling sometimes it won’t set until driving for a few mins. Was able to capture waveform while code sets. Waveform seems normal. Could something else like a cam sensor be causing this code.? Beginning to be a great PIMA….any help is greatly appreciated!!
Update! Removed the intake manifold to look for any harness issues or signs of wire issues or connector issues, so far no luck. The shielded pair of wires run from passenger side fire wall, across front valve cover, past the alternator down to the sensor. Removed both of the valve covers to double check those cam cradle seals. Both banks are intact and in placed properly. Going to reinstall valve covers and get out a bigger scope to get a good waveform of cams and crank. Also going to see if crank sensor can be snuck out to get a good look at wheel with borescope. I attached some code criteria as well
Vehicle has 168k!