P052E: Positive Crankcase Ventilation Regulator Valve Performance
P052E is an OBD-II diagnostic trouble code meaning “Positive Crankcase Ventilation Regulator Valve Performance.” The PCV valve is not performing correctly. Can cause oil leaks, rough idle, and increased emissions. According to Au7o's database, this code appears across 16 vehicle models from 9 manufacturers. Full vehicle-specific causes and solutions at au7o.io.
Common Causes
Diagnostic Tools
To diagnose P052E, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected by P052E
Click any vehicle to see the full issue details, symptoms, and repair guide.
Related Codes
Frequently Asked Questions
What does P052E mean?
P052E stands for "Positive Crankcase Ventilation Regulator Valve Performance." The PCV valve is not performing correctly. Can cause oil leaks, rough idle, and increased emissions.
What are the most common causes of P052E?
The most common causes of P052E are: Failed PCV valve, Clogged PCV passages, Cracked PCV hose, Stuck PCV diaphragm, Excessive blow-by from worn engine. The specific cause varies by vehicle — Au7o documents vehicle-specific causes for 16 models.
How much does it cost to fix P052E?
Repair costs vary widely depending on the root cause and vehicle. Check the vehicle-specific issues below for estimated costs.
Which vehicles are affected by P052E?
Au7o has documented P052E across 16 vehicle models from 9 manufacturers: Audi, BMW, Cadillac, Honda, Jeep, Nissan, Subaru, Volkswagen, Volvo. See the full list below for vehicle-specific causes and repair costs.
Get a DIY Repair Guide for Your Vehicle
AI-powered step-by-step repair and maintenance guides tailored to your exact vehicle. Enter your year, make, and model to get started.
Get Started Free