{"id":287425,"date":"2024-10-21T15:08:49","date_gmt":"2024-10-21T15:08:49","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287425"},"modified":"2024-11-04T05:05:23","modified_gmt":"2024-11-04T05:05:23","slug":"p0448-evaporative-emission-control-system-vent-control-circuit-shorted","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p0448-evaporative-emission-control-system-vent-control-circuit-shorted\/","title":{"rendered":"P0448 &#8211; \u84b8\u53d1\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u901a\u98ce\u63a7\u5236\u7535\u8def\u77ed\u8def"},"content":{"rendered":"<h2 id=\"what-is-the-p0448-code-\">\u4ec0\u4e48\u662fP0448\u4ee3\u7801\uff1f<\/h2>\n<p><strong>P0448<\/strong>\u8bca\u65ad\u6545\u969c\u4ee3\u7801(DTC)\u8868\u660e\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757(PCM)\u68c0\u6d4b\u5230\u84b8\u53d1\u6392\u653e(EVAP)\u63a7\u5236\u7cfb\u7edf\u7684\u901a\u98ce\u63a7\u5236\u9600\u7535\u8def\u51fa\u73b0\u77ed\u8def\u3002\u8be5\u901a\u7528OBD-II\u4ee3\u7801\u9002\u7528\u4e8e1996\u5e74\u53ca\u4ee5\u540e\u7684\u6240\u6709\u8f66\u578b\uff0c\u5c3d\u7ba1\u5177\u4f53\u7684\u6545\u969c\u6392\u9664\u6b65\u9aa4\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6211\u4eec\u5728\u5404\u79cd\u7f8e\u56fd\u3001\u4e9a\u6d32\u548c\u6b27\u6d32\u54c1\u724c\u7684\u8f66\u8f86\u4e2d\u9047\u5230\u8fc7P0448\u4ee3\u7801\u3002\u7136\u800c\uff0c\u6211\u4eec\u6ce8\u610f\u5230\u8be5\u4ee3\u7801\u5728\u67d0\u4e9b\u6b27\u6d32\u8f66\u8f86\u4e2d\u66f4\u4e3a\u5e38\u89c1\uff0c\u7279\u522b\u662f\u5927\u4f17\u3001\u5965\u8fea\u548c\u5b9d\u9a6c\u8f66\u578b\u3002\u4f8b\u5982\uff0c\u5c31\u5728\u4e0a\u5468\uff0c\u6211\u4eec\u5904\u7406\u4e86\u4e00\u8f862015\u5e74\u6b3e\u5965\u8feaA4\uff0c\u8f66\u8f86\u6301\u7eed\u51fa\u73b0P0448\u4ee3\u7801\u3002\u7ecf\u8fc7\u5f7b\u5e95\u8bca\u65ad\u540e\uff0c\u6211\u4eec\u53d1\u73b0\u95ee\u9898\u6e90\u81eaEVAP\u7cfb\u7edf\u4e2d\u7684\u6545\u969c\u901a\u98ce\u9600\u3002\u66f4\u6362\u8be5\u9600\u95e8\u540e\uff0c\u95ee\u9898\u5f97\u5230\u89e3\u51b3\uff0c\u8f66\u8f86\u8fd0\u884c\u6b63\u5e38\u3002\u867d\u7136P0448\u53ef\u80fd\u51fa\u73b0\u5728\u4efb\u4f55\u8f66\u8f86\u4e0a\uff0c\u4f46\u6211\u4eec\u7684\u5b9e\u9645\u7ecf\u9a8c\u8868\u660e\uff0c\u6b27\u6d32\u54c1\u724c\u8f66\u578b\uff0c\u5c24\u5176\u662f\u8fd9\u4e9bEVAP\u7cfb\u7edf\u7ec4\u4ef6\uff0c\u5bb9\u6613\u51fa\u73b0\u8be5\u6545\u969c\u4ee3\u7801\u3002<\/p>\n<\/div>\n<h2 id=\"urgency-of-the-p0448-code\">P0448\u4ee3\u7801\u7684\u7d27\u6025\u6027<\/h2>\n<p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u77ed\u65f6\u95f4\u5185\u5e26\u6709P0448\u4ee3\u7801\u9a7e\u9a76\u662f\u5b89\u5168\u7684\uff0c\u4e0d\u4f1a\u9020\u6210\u989d\u5916\u635f\u574f\u3002\u7136\u800c\uff0c\u5efa\u8bae\u5c3d\u5feb\u8bca\u65ad\u548c\u4fee\u590d\u6b64\u95ee\u9898\uff0c\u4ee5\u786e\u4fdd\u6392\u653e\u63a7\u5236\u6b63\u5e38\uff0c\u5e76\u9632\u6b62\u52a0\u6cb9\u95ee\u9898\u7684\u53d1\u751f\u3002<\/p>\n<h2 id=\"key-components-involved\">\u6d89\u53ca\u7684\u5173\u952e\u90e8\u4ef6<\/h2>\n<p>\u4e0eP0448\u4ee3\u7801\u76f8\u5173\u7684\u4e3b\u8981\u90e8\u4ef6\u5305\u62ec\uff1a<\/p>\n<ol>\n<li><strong>EVAP\u901a\u98ce\u63a7\u5236\u9600<\/strong>\uff1a\u8c03\u8282\u4ece\u6d3b\u6027\u70ad\u7f50\u5230\u53d1\u52a8\u673a\u7684\u71c3\u6cb9\u84b8\u6c14\u6d41\u52a8\u3002<\/li>\n<li><strong>\u6d3b\u6027\u70ad\u7f50<\/strong>\uff1a\u6682\u65f6\u50a8\u5b58\u6765\u81ea\u71c3\u6cb9\u7bb1\u7684\u71c3\u6cb9\u84b8\u6c14\u3002<\/li>\n<li><strong>\u6e05\u6d17\u63a7\u5236\u9600<\/strong>\uff1a\u63a7\u5236\u4ece\u6d3b\u6027\u70ad\u7f50\u5230\u53d1\u52a8\u673a\u8fdb\u6c14\u53e3\u7684\u71c3\u6cb9\u84b8\u6c14\u6d41\u52a8\u3002<\/li>\n<li><strong>\u7ebf\u675f\u548c\u8fde\u63a5\u5668<\/strong>\uff1a\u4e3aPCM\u4e0eEVAP\u7ec4\u4ef6\u4e4b\u95f4\u63d0\u4f9b\u7535\u6c14\u8fde\u63a5\u3002<\/li>\n<\/ol>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>\u5bfc\u81f4P0448\u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>EVAP\u901a\u98ce\u63a7\u5236\u9600\u6545\u969c<\/li>\n<li>\u901a\u98ce\u63a7\u5236\u7535\u8def\u4e2d\u7684\u7ebf\u8def\u6216\u8fde\u63a5\u5668\u635f\u574f\u6216\u677e\u52a8<\/li>\n<li>\u6d3b\u6027\u70ad\u7f50\u5835\u585e\u6216\u6545\u969c<\/li>\n<li>\u6e05\u6d17\u63a7\u5236\u9600\u6545\u969c<\/li>\n<li>\u71c3\u6cb9\u76d6\u5b89\u88c5\u4e0d\u5f53\u6216\u6545\u969c<\/li>\n<\/ol>\n<h2 id=\"diagnostic-steps\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<p>\u6b63\u786e\u8bca\u65adP0448\u4ee3\u7801\u7684\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u626b\u63cf\u5176\u4ed6\u4ee3\u7801\u5e76\u6e05\u9664P0448\u4ee3\u7801\u3002<\/li>\n<li>\u68c0\u67e5\u7ebf\u675f\u548c\u8fde\u63a5\u5668\u662f\u5426\u635f\u574f\u6216\u677e\u52a8\u3002<\/li>\n<li>\u4f7f\u7528\u4e07\u7528\u8868\u6216\u7535\u6c60\u7535\u538b\u68c0\u67e5EVAP\u901a\u98ce\u63a7\u5236\u9600\u7684\u64cd\u4f5c\u60c5\u51b5\u3002<\/li>\n<li>\u6d4b\u8bd5\u6e05\u6d17\u63a7\u5236\u9600\u7684\u529f\u80fd\u3002<\/li>\n<li>\u68c0\u67e5\u6d3b\u6027\u70ad\u7f50\u662f\u5426\u5835\u585e\u6216\u635f\u574f\u3002<\/li>\n<li>\u68c0\u67e5\u71c3\u6cb9\u76d6\u7684\u5bc6\u5c01\u6027\uff0c\u5fc5\u8981\u65f6\u66f4\u6362\u3002<\/li>\n<\/ol>\n<h2 id=\"repair-solutions-and-costs\">\u4fee\u590d\u65b9\u6848\u548c\u8d39\u7528<\/h2>\n<p>\u4fee\u590dP0448\u4ee3\u7801\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u66f4\u6362EVAP\u901a\u98ce\u63a7\u5236\u9600\uff1a50\u81f3200\u7f8e\u5143\uff0845\u81f3180\u6b27\u5143\uff09<\/li>\n<li>\u4fee\u7406\/\u66f4\u6362\u635f\u574f\u7684\u7ebf\u8def\u548c\u8fde\u63a5\u5668\uff1a50\u81f3150\u7f8e\u5143\uff0845\u81f3135\u6b27\u5143\uff09<\/li>\n<li>\u66f4\u6362\u6d3b\u6027\u70ad\u7f50\uff1a200\u81f3600\u7f8e\u5143\uff08180\u81f3540\u6b27\u5143\uff09<\/li>\n<li>\u66f4\u6362\u6e05\u6d17\u63a7\u5236\u9600\uff1a100\u81f3200\u7f8e\u5143\uff0890\u81f3180\u6b27\u5143\uff09<\/li>\n<li>\u66f4\u6362\u71c3\u6cb9\u76d6\uff1a10\u81f330\u7f8e\u5143\uff089\u81f327\u6b27\u5143\uff09<\/li>\n<\/ol>\n<p>\u4eba\u5de5\u8d39\u7528\u5927\u7ea6\u4e3a\u6bcf\u5c0f\u65f650\u81f3150\u7f8e\u5143\uff0845\u81f3135\u6b27\u5143\uff09\u3002<\/p>\n<h2 id=\"prevention-and-related-codes\">\u9884\u9632\u548c\u76f8\u5173\u4ee3\u7801<\/h2>\n<p>\u4e3a\u9632\u6b62P0448\u4ee3\u7801\uff0c\u5b9a\u671f\u68c0\u67e5\u5e76\u6839\u636e\u9700\u8981\u66f4\u6362\u71c3\u6cb9\u76d6\uff0c\u5e76\u53ca\u65f6\u4fee\u590d\u4efb\u4f55\u71c3\u6cb9\u7cfb\u7edf\u6cc4\u6f0f\u3002\u4e0eP0448\u76f8\u5173\u7684\u5176\u4ed6\u4ee3\u7801\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>P0440\uff1a\u84b8\u53d1\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u6545\u969c<\/li>\n<li>P0442\uff1aEVAP\u7cfb\u7edf\u6cc4\u6f0f\u68c0\u6d4b\uff08\u5c0f\u6cc4\u6f0f\uff09<\/li>\n<li>P0446\uff1aEVAP\u901a\u98ce\u63a7\u5236\u7535\u8def\u6545\u969c<\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p0455-evap-system-leak-detected-gross-leak-no-flow\/\" title=\"P0455\uff1aEVAP\u7cfb\u7edf\u6cc4\u6f0f\u68c0\u6d4b\uff08\u5927\u6cc4\u6f0f\uff09\">P0455\uff1aEVAP\u7cfb\u7edf\u6cc4\u6f0f\u68c0\u6d4b\uff08\u5927\u6cc4\u6f0f\uff09<\/a><\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4e86\u89e3P0448\u4ee3\u7801\u3001\u5176\u539f\u56e0\u4ee5\u53ca\u6b63\u786e\u7684\u8bca\u65ad\u548c\u4fee\u590d\u7a0b\u5e8f\uff0c\u5de5\u7a0b\u5e08\u548c\u6280\u5e08\u53ef\u4ee5\u6709\u6548\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u5e76\u7ef4\u6301\u8f66\u8f86\u6392\u653e\u63a7\u5236\u7684\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<h2 id=\"frequently-asked-questions-faq-about-p0448-code\">\u5173\u4e8eP0448\u4ee3\u7801\u7684\u5e38\u89c1\u95ee\u9898(FAQ)<\/h2>\n<h3 id=\"what-does-the-p0448-code-mean-\">P0448\u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>P0448\u4ee3\u7801\u8868\u793a\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757(PCM)\u68c0\u6d4b\u5230\u84b8\u53d1\u6392\u653e(EVAP)\u63a7\u5236\u7cfb\u7edf\u7684\u901a\u98ce\u63a7\u5236\u9600\u7535\u8def\u51fa\u73b0\u77ed\u8def\u3002<\/p>\n<h3 id=\"is-it-safe-to-drive-with-a-p0448-code-\">\u5e26\u6709P0448\u4ee3\u7801\u9a7e\u9a76\u662f\u5426\u5b89\u5168\uff1f<\/h3>\n<p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u77ed\u65f6\u95f4\u5185\u5e26\u6709P0448\u4ee3\u7801\u9a7e\u9a76\u662f\u5b89\u5168\u7684\uff0c\u4e0d\u4f1a\u9020\u6210\u8fdb\u4e00\u6b65\u635f\u574f\u3002\u7136\u800c\uff0c\u5efa\u8bae\u5c3d\u5feb\u8bca\u65ad\u548c\u4fee\u590d\u6b64\u95ee\u9898\uff0c\u4ee5\u786e\u4fdd\u6392\u653e\u63a7\u5236\u6b63\u5e38\uff0c\u5e76\u907f\u514d\u52a0\u6cb9\u95ee\u9898\u3002<\/p>\n<h3 id=\"what-are-the-common-symptoms-of-a-p0448-code-\">P0448\u4ee3\u7801\u7684\u5e38\u89c1\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>P0448\u4ee3\u7801\u7684\u5e38\u89c1\u75c7\u72b6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u53d1\u52a8\u673a\u6545\u969c\u706f\u4eae\u8d77<\/li>\n<li>\u71c3\u6cb9\u84b8\u6c14\u5f02\u5473<\/li>\n<li>\u6020\u901f\u4e0d\u7a33<\/li>\n<\/ul>\n<h3 id=\"what-are-the-common-causes-of-a-p0448-code-\">\u5bfc\u81f4P0448\u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5bfc\u81f4P0448\u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>EVAP\u901a\u98ce\u63a7\u5236\u9600\u6545\u969c<\/li>\n<li>\u901a\u98ce\u63a7\u5236\u7535\u8def\u4e2d\u7684\u7ebf\u8def\u6216\u8fde\u63a5\u5668\u635f\u574f\u6216\u677e\u52a8<\/li>\n<li>\u6d3b\u6027\u70ad\u7f50\u5835\u585e\u6216\u6545\u969c<\/li>\n<li>\u6e05\u6d17\u63a7\u5236\u9600\u6545\u969c<\/li>\n<li>\u71c3\u6cb9\u76d6\u5b89\u88c5\u4e0d\u5f53\u6216\u6545\u969c<\/li>\n<\/ul>\n<h3 id=\"how-do-you-diagnose-a-p0448-code-\">\u5982\u4f55\u8bca\u65adP0448\u4ee3\u7801\uff1f<\/h3>\n<p>\u8bca\u65adP0448\u4ee3\u7801\u7684\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528OBD-II\u626b\u63cf\u4eea\u68c0\u67e5\u5176\u4ed6\u4ee3\u7801\u5e76\u6e05\u9664P0448\u4ee3\u7801\u3002<\/li>\n<li>\u76ee\u89c6\u68c0\u67e5\u7ebf\u675f\u548c\u8fde\u63a5\u5668\u662f\u5426\u635f\u574f\u6216\u677e\u52a8\u3002<\/li>\n<li>\u4f7f\u7528\u4e07\u7528\u8868\u6216\u7535\u6c60\u7535\u538b\u68c0\u67e5EVAP\u901a\u98ce\u63a7\u5236\u9600\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<li>\u6d4b\u8bd5\u6e05\u6d17\u63a7\u5236\u9600\u7684\u529f\u80fd\u3002<\/li>\n<li>\u68c0\u67e5\u6d3b\u6027\u70ad\u7f50\u662f\u5426\u5835\u585e\u6216\u635f\u574f\u3002<\/li>\n<li>\u68c0\u67e5\u71c3\u6cb9\u76d6\u7684\u5bc6\u5c01\u6027\uff0c\u5fc5\u8981\u65f6\u66f4\u6362\u3002<\/li>\n<\/ol>\n<h3 id=\"what-parts-are-involved-with-the-p0448-code-\">\u4e0eP0448\u4ee3\u7801\u76f8\u5173\u7684\u90e8\u4ef6\u6709\u54ea\u4e9b\uff1f<\/h3>\n<p>\u4e0eP0448\u4ee3\u7801\u76f8\u5173\u7684\u4e3b\u8981\u90e8\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>EVAP\u901a\u98ce\u63a7\u5236\u9600<\/li>\n<li>\u6d3b\u6027\u70ad\u7f50<\/li>\n<li>\u6e05\u6d17\u63a7\u5236\u9600<\/li>\n<li>\u7ebf\u675f\u548c\u8fde\u63a5\u5668<\/li>\n<\/ul>\n<h3 id=\"what-is-the-function-of-the-evap-vent-control-valve-\">EVAP\u901a\u98ce\u63a7\u5236\u9600\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>EVAP\u901a\u98ce\u63a7\u5236\u9600\u8c03\u8282\u4ece\u6d3b\u6027\u70ad\u7f50\u5230\u53d1\u52a8\u673a\u7684\u71c3\u6cb9\u84b8\u6c14\u6d41\u52a8\u3002\u5f53\u6761\u4ef6\u5408\u9002\u65f6\uff0c\u9600\u95e8\u6253\u5f00\uff0c\u5141\u8bb8\u84b8\u6c14\u8fdb\u5165\u53d1\u52a8\u673a\u8fdb\u6c14\u53e3\u8fdb\u884c\u71c3\u70e7\u3002<\/p>\n<h3 id=\"what-is-the-role-of-the-charcoal-canister-\">\u6d3b\u6027\u70ad\u7f50\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u6d3b\u6027\u70ad\u7f50\u6682\u65f6\u50a8\u5b58\u6765\u81ea\u71c3\u6cb9\u7bb1\u7684\u71c3\u6cb9\u84b8\u6c14\uff0c\u76f4\u5230\u8fd9\u4e9b\u84b8\u6c14\u53ef\u4ee5\u88ab\u5f15\u5165\u53d1\u52a8\u673a\u8fdb\u884c\u71c3\u70e7\u3002\u5b83\u6709\u52a9\u4e8e\u9632\u6b62\u71c3\u6cb9\u84b8\u6c14\u9038\u5165\u5927\u6c14\u3002<\/p>\n<h3 id=\"how-much-does-it-cost-to-repair-a-p0448-code-\">\u4fee\u590dP0448\u4ee3\u7801\u7684\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590dP0448\u4ee3\u7801\u7684\u8d39\u7528\u56e0\u6839\u672c\u539f\u56e0\u800c\u5f02\uff0c\u5e38\u89c1\u8d39\u7528\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u66f4\u6362EVAP\u901a\u98ce\u63a7\u5236\u9600\uff1a50\u81f3200\u7f8e\u5143<\/li>\n<li>\u4fee\u7406\/\u66f4\u6362\u7ebf\u8def\u548c\u8fde\u63a5\u5668\uff1a50\u81f3150\u7f8e\u5143<\/li>\n<li>\u66f4\u6362\u6d3b\u6027\u70ad\u7f50\uff1a200\u81f3600\u7f8e\u5143<\/li>\n<li>\u66f4\u6362\u6e05\u6d17\u63a7\u5236\u9600\uff1a100\u81f3200\u7f8e\u5143<\/li>\n<li>\u66f4\u6362\u71c3\u6cb9\u76d6\uff1a10\u81f330\u7f8e\u5143<\/li>\n<\/ul>\n<p>\u4eba\u5de5\u8d39\u7528\u901a\u5e38\u4e3a\u6bcf\u5c0f\u65f650\u81f3150\u7f8e\u5143\u3002<\/p>\n<h3 id=\"can-a-faulty-gas-cap-cause-a-p0448-code-\">\u635f\u574f\u7684\u71c3\u6cb9\u76d6\u4f1a\u5bfc\u81f4P0448\u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u5b89\u88c5\u4e0d\u5f53\u6216\u635f\u574f\u7684\u71c3\u6cb9\u76d6\u5982\u679c\u5bc6\u5c01\u4e0d\u826f\uff0c\u53ef\u80fd\u5bfc\u81f4\u71c3\u6cb9\u84b8\u6c14\u9038\u51fa\uff0c\u89e6\u53d1P0448\u4ee3\u7801\u3002\u59cb\u7ec8\u786e\u4fdd\u71c3\u6cb9\u76d6\u72b6\u6001\u826f\u597d\u4e14\u62e7\u7d27\u3002<\/p>\n<h3 id=\"are-there-any-common-mistakes-when-diagnosing-a-p0448-code-\">\u5728\u8bca\u65adP0448\u4ee3\u7801\u65f6\uff0c\u6709\u4ec0\u4e48\u5e38\u89c1\u9519\u8bef\u5417\uff1f<\/h3>\n<p>\u4e00\u4e2a\u5e38\u89c1\u7684\u9519\u8bef\u662f\u5ffd\u89c6\u7b80\u5355\u539f\u56e0\uff0c\u4f8b\u5982\u677e\u52a8\u7684\u71c3\u6cb9\u76d6\u6216\u771f\u7a7a\u6cc4\u6f0f\uff0c\u800c\u5728\u4e0d\u5fc5\u8981\u7684\u60c5\u51b5\u4e0b\u66f4\u6362\u66f4\u6602\u8d35\u7684\u7ec4\u4ef6\u3002\u59cb\u7ec8\u5148\u8fdb\u884c\u5f7b\u5e95\u7684\u76ee\u89c6\u68c0\u67e5\u3002<\/p>\n<h3 id=\"what-are-some-other-codes-that-may-appear-with-p0448-\">\u4e0eP0448\u4ee3\u7801\u53ef\u80fd\u4e00\u8d77\u51fa\u73b0\u7684\u5176\u4ed6\u4ee3\u7801\u6709\u54ea\u4e9b\uff1f<\/h3>\n<p>\u53ef\u80fd\u4e0eP0448\u4ee3\u7801\u4e00\u8d77\u51fa\u73b0\u7684\u76f8\u5173\u4ee3\u7801\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>P0440 &#8211; \u84b8\u53d1\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u6545\u969c<\/li>\n<li>P0442 &#8211; EVAP\u7cfb\u7edf\u6cc4\u6f0f\u68c0\u6d4b\uff08\u5c0f\u6cc4\u6f0f\uff09<\/li>\n<li>P0446 &#8211; EVAP\u901a\u98ce\u63a7\u5236\u7535\u8def\u6545\u969c<\/li>\n<li>P0455 &#8211; EVAP\u7cfb\u7edf\u6cc4\u6f0f\u68c0\u6d4b\uff08\u5927\u6cc4\u6f0f\uff09<\/li>\n<\/ul>\n<h3 id=\"can-a-p0448-code-cause-problems-with-refueling-\">P0448\u4ee3\u7801\u4f1a\u5bfc\u81f4\u52a0\u6cb9\u95ee\u9898\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u6307\u793aP0448\u4ee3\u7801\u7684\u6545\u969cEVAP\u7cfb\u7edf\u53ef\u80fd\u5bfc\u81f4\u52a0\u6cb9\u65f6\u84b8\u6c14\u672a\u6b63\u786e\u901a\u98ce\uff0c\u53ef\u80fd\u5bfc\u81f4\u52a0\u6cb9\u67aa\u8fc7\u65e9\u81ea\u52a8\u505c\u673a\u3002<\/p>\n<h3 id=\"how-often-should-the-evap-system-be-inspected-to-prevent-issues-\">\u4e3a\u4e86\u9632\u6b62\u95ee\u9898\uff0cEVAP\u7cfb\u7edf\u5e94\u591a\u4e45\u68c0\u67e5\u4e00\u6b21\uff1f<\/h3>\n<p>\u5efa\u8bae\u81f3\u5c11\u6bcf\u5e74\u68c0\u67e5\u4e00\u6b21EVAP\u7cfb\u7edf\uff0c\u6216\u8005\u5982\u679c\u60a8\u6ce8\u610f\u5230\u4efb\u4f55\u6cc4\u6f0f\u75c7\u72b6\uff0c\u4f8b\u5982\u71c3\u6cb9\u6c14\u5473\u6216\u52a0\u6cb9\u56f0\u96be\uff0c\u5e94\u5c3d\u5feb\u68c0\u67e5\u3002\u5c3d\u65e9\u53d1\u73b0\u95ee\u9898\u53ef\u4ee5\u9632\u6b62\u66f4\u6602\u8d35\u7684\u7ef4\u4fee\u3002<\/p>\n<h3 id=\"can-a-p0448-code-cause-rough-idle-or-stalling-\">P0448\u4ee3\u7801\u4f1a\u5bfc\u81f4\u6020\u901f\u4e0d\u7a33\u6216\u7184\u706b\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u6020\u901f\u4e0d\u7a33\u662fP0448\u4ee3\u7801\u7684\u6f5c\u5728\u75c7\u72b6\u4e4b\u4e00\uff0c\u4f46\u5b83\u5e76\u4e0d\u50cf\u53d1\u52a8\u673a\u6545\u969c\u706f\u4eae\u8d77\u6216\u71c3\u6cb9\u84b8\u6c14\u6c14\u5473\u90a3\u4e48\u5e38\u89c1\u3002\u7184\u706b\u5728\u6b64\u7279\u5b9a\u4ee3\u7801\u4e0b\u7684\u53ef\u80fd\u6027\u975e\u5e38\u5c0f\u3002<\/p>\n<h3 id=\"is-a-p0448-code-the-same-on-all-vehicle-makes-and-models-\">P0448\u4ee3\u7801\u5728\u6240\u6709\u8f66\u578b\u4e2d\u662f\u5426\u76f8\u540c\uff1f<\/h3>\n<p>P0448\u4ee3\u7801\u5728\u6240\u6709\u8f66\u8f86\u4e2d\u7684\u4e00\u822c\u5b9a\u4e49\u662f\u76f8\u540c\u7684\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u901a\u7528\u4ee3\u7801\u3002\u7136\u800c\uff0c\u4e0d\u540c\u54c1\u724c\u548c\u578b\u53f7\u4e4b\u95f4\u7684\u5177\u4f53\u8bca\u65ad\u548c\u4fee\u590d\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3 id=\"can-a-malfunctioning-purge-control-valve-cause-a-p0448-code-\">\u6545\u969c\u7684\u6e05\u6d17\u63a7\u5236\u9600\u4f1a\u5bfc\u81f4P0448\u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u6545\u969c\u7684\u6e05\u6d17\u63a7\u5236\u9600\u5982\u679c\u5361\u5728\u6253\u5f00\u4f4d\u7f6e\uff0c\u53ef\u80fd\u4f1a\u5141\u8bb8\u672a\u8ba1\u91cf\u7684\u7a7a\u6c14\u8fdb\u5165EVAP\u7cfb\u7edf\uff0c\u53ef\u80fd\u89e6\u53d1P0448\u4ee3\u7801\u3002\u6e05\u6d17\u9600\u5e94\u4f5c\u4e3a\u8bca\u65ad\u8fc7\u7a0b\u7684\u4e00\u90e8\u5206\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n<h3 id=\"is-special-equipment-needed-to-diagnose-a-p0448-code-\">\u8bca\u65adP0448\u4ee3\u7801\u9700\u8981\u7279\u6b8a\u8bbe\u5907\u5417\uff1f<\/h3>\n<p>\u4e3a\u4e86\u6b63\u786e\u8bca\u65adP0448\u4ee3\u7801\uff0c\u60a8\u9700\u8981\u4f7f\u7528OBD-II\u626b\u63cf\u4eea\u68c0\u67e5\u4ee3\u7801\u3001\u4f7f\u7528\u6570\u5b57\u4e07\u7528\u8868\u6d4b\u8bd5\u7535\u6c14\u7ec4\u4ef6\u548c\u7535\u8def\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u70df\u96fe\u673a\u6765\u68c0\u67e5EVAP\u6cc4\u6f0f\u3002<\/p>\n<h3 id=\"can-a-p0448-code-affect-vehicle-emissions-\">P0448\u4ee3\u7801\u4f1a\u5f71\u54cd\u8f66\u8f86\u6392\u653e\u5417\uff1f<\/h3>\n<p>\u7edd\u5bf9\u4f1a\uff0cEVAP\u7cfb\u7edf\u7684\u76ee\u7684\u662f\u63a7\u5236\u548c\u51cf\u5c11\u8f66\u8f86\u6392\u653e\u3002P0448\u4ee3\u7801\u6307\u793a\u7684\u7cfb\u7edf\u6545\u969c\u53ef\u80fd\u5bfc\u81f4\u71c3\u6cb9\u84b8\u6c14\u9038\u5165\u5927\u6c14\u4e2d\uff0c\u4ece\u800c\u589e\u52a0\u6392\u653e\u3002<\/p>\n<h3 id=\"what-should-i-do-if-a-p0448-code-keeps-coming-back-after-repairs-\">\u5982\u679cP0448\u4ee3\u7801\u5728\u7ef4\u4fee\u540e\u53cd\u590d\u51fa\u73b0\uff0c\u6211\u8be5\u600e\u4e48\u529e\uff1f<\/h3>\n<p>\u5982\u679cP0448\u4ee3\u7801\u5728\u7ef4\u4fee\u540e\u4ecd\u7136\u5b58\u5728\uff0c\u53ef\u80fd\u662f\u672a\u6b63\u786e\u89e3\u51b3\u7684\u6f5c\u5728\u95ee\u9898\u3002\u4ed4\u7ec6\u68c0\u67e5\u6240\u6709\u4fee\u590d\u3001\u8fde\u63a5\u5668\u548c\u7ec4\u4ef6\uff0c\u5e76\u8003\u8651\u5bfb\u6c42\u4e13\u4e1a\u6280\u5e08\u7684\u5e2e\u52a9\u8fdb\u884c\u8fdb\u4e00\u6b65\u8bca\u65ad\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662fP0448\u4ee3\u7801\uff1f P0448\u8bca\u65ad\u6545\u969c\u4ee3\u7801(DTC)\u8868\u660e\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757(PCM)\u68c0\u6d4b\u5230\u84b8\u53d1\u6392\u653e(EVAP<\/p>\n","protected":false},"author":13,"featured_media":287427,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-287425","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/comments?post=287425"}],"version-history":[{"count":3,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287425\/revisions"}],"predecessor-version":[{"id":288448,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287425\/revisions\/288448"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media\/287427"}],"wp:attachment":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media?parent=287425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/categories?post=287425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/tags?post=287425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}