Honda CR-V P0442

Quick answer: P0442 on your Honda CR-V means the powertrain computer detected a small leak in the EVAP (evaporative emissions) system, which captures fuel vapors from the tank and routes them to the engine instead of the atmosphere. On the CR-V this is a low-severity code that most commonly traces back to a loose, worn, or incorrectly seated fuel cap. It is safe to keep driving, but the check engine light will stay on and the car may fail an emissions test until the leak is fixed. Start by re-torquing the cap until it clicks, then look at the EVAP seals and lines if the code returns.

TL;DR

P0442 is a small EVAP leak on the CR-V. The usual culprit is a loose or worn fuel cap; less often it's a cracked EVAP hose, a leaking canister vent valve, or an aging purge valve.

Why P0442 shows up on the Honda CR-V

The CR-V uses a sealed EVAP system that constantly checks for leaks the size of a pinhole. Because the standard is so strict, even a fuel cap that isn't clicked fully tight, or a rubber seal that has hardened with age, is enough to trip P0442. This is one of the most frequently reported check-engine codes on the CR-V, and on many model years it is nothing more serious than the cap.

Model-typical causes and rough likelihood

Loose, cross-threaded, or worn fuel cap (around 40-50%) — the number one cause; the cap gasket dries out and stops sealing.
Cracked or disconnected EVAP hoses (around 20%) — rubber lines near the tank and engine bay get brittle with heat and age.
Canister vent valve or purge valve leaking (around 20%) — these solenoids can stick or fail to seal, a commonly reported CR-V wear item.
Charcoal canister or fuel filler neck seal issues (around 10%) — less common but worth checking if simpler fixes don't clear the code.

What owners should do first

Remove the fuel cap, wipe the sealing surface, and reinstall until it clicks at least three times. Drive several days so the CR-V can rerun its EVAP monitor. If the light stays off, you're done. If P0442 returns, have a shop perform an EVAP smoke test to pinpoint the leak before replacing parts, which avoids paying for guesswork.

Is it urgent?

No. A small EVAP leak does not affect engine reliability, safety, or fuel economy in any noticeable way. You can keep driving the CR-V normally, but plan to fix it so the check engine light clears and the vehicle can pass inspection.

Summary

Code	P0442
Meaning	EVAP System Leak Detected (Small Leak)
Severity	Low
Can I drive?	Yes, safe to keep driving
Most common cause	Loose or worn fuel cap
Typical repair cost	$20-$450 depending on part

Full diagnostics

For the complete step-by-step diagnostic and repair guide, see P0442 — full diagnostics.

Frequently asked questions

Can I keep driving my Honda CR-V with a P0442 code?

Yes. P0442 indicates a small EVAP (evaporative emissions) leak, which is a low-severity issue on the Honda CR-V. It does not affect engine performance, safety, or drivability, so you can continue driving normally. However, the check engine light will remain on and the vehicle may fail an emissions inspection until the leak is repaired.

What is the most common cause of P0442 on a Honda CR-V?

The most common cause of P0442 on the Honda CR-V is a loose, worn, or improperly sealed fuel cap. The CR-V's EVAP system checks for very small leaks, so a cap that isn't clicked fully tight or whose gasket has dried out will often trigger the code. Tightening or replacing the cap resolves a large share of these cases.

How much does it cost to fix P0442 on a Honda CR-V?

If the fix is just a new fuel cap, expect to pay roughly 20 to 50 USD. If an EVAP hose, canister vent valve, or purge valve is leaking, repairs including diagnosis and a smoke test typically run about 150 to 450 USD at an independent shop. Costs are higher at a dealer and depend on which component has failed.