P052E on Porsche
Positive Crankcase Ventilation Regulator Valve Performance
P052E on Porsche vehicles indicates positive crankcase ventilation regulator valve performance. Au7o has documented this code across 1 Porsche model — most commonly on Cayman. P052E indicates a performance problem with the positive crankcase ventilation (PCV) regulator valve, the valve that meters blow-by gases from the engine crankcase back into the intake to be burned. The computer monitors crankcase pressure or related readings, and when the PCV regulator isn't controlling flow within the expected range, it sets this code. Symptoms can include rough idle, oil leaks from seals due to pressure imbalance, whistling/sucking noises, or increased oil consumption. It points to the PCV valve or ventilation system rather than the fuel or ignition system. Typical repair costs on Porsche range from $500 to $8,000, depending on the specific model and root cause.
Common Causes of P052E
- •Stuck, clogged, or failed PCV regulator valve
- •Cracked or disconnected PCV hose/line
- •Vacuum leak in the crankcase ventilation system
- •Clogged PCV passages from sludge or carbon
- •Faulty crankcase pressure sensor
- •Damaged valve cover with integrated PCV (where applicable)
- •Wiring or connector fault on electrically controlled PCV valves
P052E on Porsche by Model
Porsche Cayman(1 issue)
- 718 Cayman (982) Early Turbo-Four High Oil Consumption2017-2020
A number of early 2.0L and 2.5L turbocharged flat-four 718 engines consume oil at a high rate — owners report roughly a quart per 1,000 miles, with the worst cases needing engine replacement under warranty. Some 2019 2.0L cars also suffered oil-separator (PCV) diaphragm failures that let oil be drawn into the cylinders, sometimes appearing right after an oil and filter change.
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View P052E across all makes →Frequently Asked Questions
What does P052E mean on Porsche?▼
P052E stands for "Positive Crankcase Ventilation Regulator Valve Performance." P052E indicates a performance problem with the positive crankcase ventilation (PCV) regulator valve, the valve that meters blow-by gases from the engine crankcase back into the intake to be burned. The computer monitors crankcase pressure or related readings, and when the PCV regulator isn't controlling flow within the expected range, it sets this code. Symptoms can include rough idle, oil leaks from seals due to pressure imbalance, whistling/sucking noises, or increased oil consumption. It points to the PCV valve or ventilation system rather than the fuel or ignition system. On Porsche specifically, this code is documented across 1 model.
What causes P052E on Porsche vehicles?▼
Common causes on Porsche: Stuck, clogged, or failed PCV regulator valve, Cracked or disconnected PCV hose/line, Vacuum leak in the crankcase ventilation system, Clogged PCV passages from sludge or carbon, Faulty crankcase pressure sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P052E on a Porsche?▼
Repair costs on Porsche range from $500 to $8,000, depending on the specific model and root cause.
Which Porsche models have P052E documented?▼
Au7o has documented P052E on 1 Porsche model: Cayman.