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Cayenne DTC help P053C & P0456

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I have two DTCs on  my 2011 Cayenne that I need advice about. The codes are P0456 and P053C. The car runs fine. Are there any preventative repairs I should undertake?








Edited by Loren
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Intake camshaft adjustment, bank 2 after cold start I during catalytic converter heating measure


Possible fault causes
- Engine oil pressure too low  (e.g. oil thickening, wrong oil quality, oil pressure control or oil pump sluggish/stuck)
- Solenoid valve for hydraulic camshaft adjustment sluggish/stuck
- Camshaft adjustment sluggish/stuck
- Intake camshaft sluggish/stuck



Tank system leak


Possible fault causes
- Tank cap loose/does not close (properly)
- Tank cap leaking/faulty
- Vacuum system leaking (See K 1)
- Vacuum pump faulty
- Tank vent valve (TEV) mechanically faulty (does not close (properly))
- Leakage diagnosis pump fresh air side constricted (dust/dirt)
- Internal (diaphragm) or external leak in leakage diagnosis pump
- Fuel tank system (with hoses) leaking

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