![]() These hoses are often prone to cracking, tearing, and splitting. EVAP HosesĪ hose carries fuel vapor from the gas tank to the gas tank vent valve, and another hose runs from the charcoal canister to the intake manifold (gatekept by the purge valve). The most challenging part is getting under your SX4 to get to it. The part is readily available online or at your local auto parts store. It controls the pressure in the fuel tank and prevents any gases from escaping into the atmosphere.Ī vent control valve is relatively easy to replace if you have all the necessary tools. The vent control valve regulates vapor flow from the fuel tank/charcoal canister. Always verify the fit for the model year and engine combination in your car. Pull the harness plug, and that’s usually it. There are a few clips that you need to find and remove. The purge valve lets fuel vapor out of the charcoal canister and into the intake manifold. ![]() The vapor canister purge valve is a common cause of the P0442 trouble code and the Suzuki SX4. Unfortunately, when this code appears by itself, it doesn’t specify which part of the EVAP system the leak is coming from.Ī professional shop can use a smoke machine to test precisely where your SX4’s EVAP system is leaking from. ![]() P0442 doesn’t specify where the leak is coming from, only that there is a leak. EVAP System Leak Purge valves come in many shapes and sizes Inspect the O ring underneath the fuel cap and verify that it is present and not dry-rotted.Įnsure you utilize an authentic Suzuki gas cap for replacements to maintain optimal functionality. Your SX4 may display a message indicating that you need to tighten the gas cap even if it doesn’t, the fuel cap is the first thing you should check. ![]() Just be aware that the engine may take several cycles to clear the code. So if it’s the first time you have experienced this issue, you may want to tighten the fuel cap and see if the code clears itself. Bad or Loose Gas CapĪ bad or loose gas cap will also trigger this trouble code. The most prevalent issue is undoubtedly the gas cap. Numerous factors can trigger the P0442 error code in the Suzuki SX4. In rare cases, your SX4 may have difficulty starting after fueling up, indicating the purge valve is stuck open. You may notice the vague smell of gas near the back of your vehicle, the check engine light will illuminate, and you may or may not have a “ check fuel cap message”. There are rarely any symptoms related to the P0442 code. P0442 indicates your SX4 has a minor EVAP leak. When the Suzuki SX4’s computer detects that the EVAP system has a leak, it will throw the P0442 code.ĭifferent code numbers represent the leak size. The EVAP system captures all fuel vapor from your car’s fuel tank and sends them to the engine’s intake to be ignited in the normal combustion process. P0442: Evaporative Emission Control System → Leak Detected (Small) Evaporative Emission Control System P0442 is a universal OBD II diagnostic trouble code, applicable across vehicle manufacturers. The most common cause of P0442 is a missing or damaged fuel cap. While it’s unlikely to cause a breakdown, it can be bothersome and may result in a failed emissions test for your SX4. This code appears when connecting the vehicle to an OBDII scanner and pertains to the emissions system. One of the most common issues that happens with the Suzuki SX4 is the P0442 trouble code.
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