P1442 on 2005-2009 Toyota 4Runner — Evaporative Emission Control System Leak Detected (Small Leak)
1 vehicles · 1 makes · $900-$3,000 repair
Most Reported On
P1442 is an OBD-II diagnostic trouble code meaning “Evaporative Emission Control System Leak Detected (Small Leak).” This is a manufacturer-specific EVAP (evaporative emissions) code; on Ford it generally means the computer detected a small leak in the system that captures fuel-tank vapors to keep them from reaching the atmosphere. On some other makers it refers to the EVAP leak-detection pump control circuit, so the exact meaning varies by manufacturer. It is an emissions code, not a drivability safety issue, though it will keep the check engine light on. The most frequent cause is something as simple as a loose or worn gas cap. This code is most commonly reported on 2005-2009 Toyota 4Runner, with repair costs ranging from $900 to $3,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P1442, 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
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FAQ
What does P1442 mean?
P1442 stands for "Evaporative Emission Control System Leak Detected (Small Leak)." This is a manufacturer-specific EVAP (evaporative emissions) code; on Ford it generally means the computer detected a small leak in the system that captures fuel-tank vapors to keep them from reaching the atmosphere. On some other makers it refers to the EVAP leak-detection pump control circuit, so the exact meaning varies by manufacturer. It is an emissions code, not a drivability safety issue, though it will keep the check engine light on. The most frequent cause is something as simple as a loose or worn gas cap.
What are the most common causes of P1442?
The most common causes of P1442 are: Loose, cracked, or worn fuel filler cap, Cracked or disconnected EVAP hose or vacuum line, Faulty purge or vent valve/solenoid, Leaking or cracked charcoal (EVAP) canister, Damaged fuel-tank or filler-neck seal, Faulty leak detection pump (on makers that use one). The specific cause varies by vehicle.
How much does it cost to fix P1442?
Repair costs for P1442 range from $900 to $3,000, depending on the vehicle and root cause.
Which vehicles are affected by P1442?
Au7o has documented P1442 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.