https://wiki.ross-tech.com/wiki/index.php?action=history&feed=atom&title=16841%2FP0457%2F001111 2026-04-20T13:59:01Z Revision history for this page on the wiki MediaWiki 1.43.3 https://wiki.ross-tech.com/wiki/index.php?title=16841/P0457/001111&diff=9808&oldid=prev 2025-11-12T17:16:11Z

<p>Created page with &quot;__FORCETOC__ == 16841/P0457/001111 - EVAP System: Leak Detected (Check Fuel Cap!) == ==== Possible Symptoms ==== * Malfunction Indicator Light (MIL) (illuminated) * Tank Cap Amber Warning (illuminated) * Stored fault code(s) in Engine Control Module * Possible fuel odor, especially near rear of vehicle after refueling ==== Possible Causes ==== * Fuel Tank Cap not closed properly * Fuel Tank Cap seal damaged, hardened, or missing * Evaporative Emission (EVAP) System...&quot;</p> <p><b>New page</b></p><div>__FORCETOC__<br /> == 16841/P0457/001111 - EVAP System: Leak Detected (Check Fuel Cap!) ==<br /> <br /> ==== Possible Symptoms ====<br /> <br /> * Malfunction Indicator Light (MIL) (illuminated)<br /> * Tank Cap Amber Warning (illuminated)<br /> * Stored fault code(s) in Engine Control Module<br /> * Possible fuel odor, especially near rear of vehicle after refueling<br /> <br /> ==== Possible Causes ====<br /> <br /> * Fuel Tank Cap not closed properly<br /> * Fuel Tank Cap seal damaged, hardened, or missing<br /> * Evaporative Emission (EVAP) System leak (small to large)<br /> * Leak Detection Pump (LDP) or Leak Detection Module fault<br /> * Cracked or disconnected EVAP hoses or vapor lines<br /> * Damaged charcoal canister or vent valve<br /> <br /> ==== Possible Solutions ====<br /> <br /> * Inspect Fuel Tank Cap and seal for damage, debris, or missing O-ring<br /> * Verify Fuel Tank Cap closes securely and clicks into place<br /> * Check Fuel Filler Neck for damage or corrosion<br /> * Perform Visual Inspection of Fuel Tank, EVAP hoses, canister, and fittings<br /> * Perform EVAP leak test (with smoke test equipment)<br /> * Check operation of Leak Detection Pump or system vent valve (if equipped)<br /> <br /> <br /> <br /> ==== Special Notes ====<br /> === North American market vehicles (only) ===<br /> <br /> * For the 2019-2021 Tiguan 2.0L (DGUA) engine, please see Volkswagen Technical Tip 01-21-01 (2062754/1)<br /> *** https://static.nhtsa.gov/odi/tsbs/2021/MC-10189310-0001.pdf NHTSA<br /> <br /> * For the 2018 Atlas 3.6L (CDVC) engine, please refer to Volkswagen UPDATE Technical Bulletin, July 19, 2018, 23X1 UPDATE – ECM Software Update (FED_EMS)<br /> *** https://static.nhtsa.gov/odi/tsbs/2018/MC-10150784-9999.pdf NHTSA<br /> <br /> * For the 2015 - 2016 Passat, please refer to the Volkswagen Technical Tip (26-16-02) - Loose Evap Lines...<br /> *** https://static.nhtsa.gov/odi/tsbs/2016/MC-10121149-9999.pdf NHTSA<br /> <br /> [[Category:Fault Codes]]</div>

Peter