{"id":287351,"date":"2024-10-21T08:03:13","date_gmt":"2024-10-21T08:03:13","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287351"},"modified":"2024-11-01T12:22:34","modified_gmt":"2024-11-01T12:22:34","slug":"p1408-egr-flow-out-of-self-test-range","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p1408-egr-flow-out-of-self-test-range\/","title":{"rendered":"P1408 &#8211; EGR \u81ea\u6d4b\u6d41\u91cf\u8d85\u51fa\u8303\u56f4"},"content":{"rendered":"<h2 id=\"urgency-and-safety\">\u7d27\u6025\u7a0b\u5ea6\u548c\u5b89\u5168\u6027<\/h2>\n<ul>\n<li>\u5e26\u6709P1408\u4ee3\u7801\u7684\u8f66\u8f86\u53ef\u4ee5\u5b89\u5168\u884c\u9a76\u77ed\u8ddd\u79bb\u4ee5\u8fdb\u884c\u8bca\u65ad\u548c\u4fee\u7406\u3002\u7136\u800c\uff0c\u4e0d\u5efa\u8bae\u957f\u65f6\u95f4\u9a7e\u9a76\uff0c\u56e0\u4e3a\u8fd9\u53ef\u80fd\u5bfc\u81f4\u71c3\u6cb9\u7ecf\u6d4e\u6027\u4e0b\u964d\u3001\u6392\u653e\u589e\u52a0\u4ee5\u53ca\u6f5c\u5728\u7684\u53d1\u52a8\u673a\u635f\u574f\u3002<\/li>\n<li>\u5e94\u5c3d\u5feb\u5904\u7406\u8be5\u95ee\u9898\u4ee5\u9632\u6b62\u8fdb\u4e00\u6b65\u635f\u574f\u5e76\u6062\u590d\u6b63\u5e38\u7684\u53d1\u52a8\u673a\u6027\u80fd\u3002\u867d\u7136\u4e0d\u9700\u8981\u7acb\u5373\u7ef4\u4fee\uff0c\u4f46\u4e0d\u80fd\u957f\u65f6\u95f4\u5ffd\u89c6\u6b64\u95ee\u9898\u3002<\/li>\n<li>\u5982\u679c\u8f66\u8f86\u51fa\u73b0\u660e\u663e\u7684\u52a8\u529b\u635f\u5931\u3001\u8fd0\u884c\u4e0d\u7a33\u6216\u7184\u706b\uff0c\u5efa\u8bae\u4e0d\u8981\u7ee7\u7eed\u9a7e\u9a76\uff0c\u76f4\u5230\u95ee\u9898\u89e3\u51b3\u3002<\/li>\n<\/ul>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6211\u7ecf\u5e38\u9047\u5230P1408\u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u5927\u4f17\u3001\u5965\u8fea\u548c\u5b9d\u9a6c\u7b49\u6b27\u6d32\u54c1\u724c\u4e0a\u3002\u4e0a\u5468\uff0c\u4e00\u4f4d\u5ba2\u6237\u5e26\u7740\u4ed6\u76842015\u5e74\u6b3e\u5965\u8feaA4\u6765\u7ef4\u4fee\uff0c\u68c0\u67e5\u53d1\u52a8\u673a\u706f\u4eae\u4e86\uff0c\u679c\u7136\u662fP1408\u4ee3\u7801\u3002\u6211\u4eec\u53d1\u73b0\u8fd9\u4e9b\u8f66\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662fEGR\u7cfb\u7edf\u8f6f\u7ba1\u4e2d\u7684\u771f\u7a7a\u6cc4\u6f0f\u6216\u5361\u4f4f\u7684EGR\u9600\u3002\u6e05\u6d01\u9600\u95e8\u5e76\u66f4\u6362\u4efb\u4f55\u7834\u88c2\u6216\u635f\u574f\u7684\u8f6f\u7ba1\u901a\u5e38\u80fd\u89e3\u51b3\u95ee\u9898\u3002\u867d\u7136\u5728\u4e9a\u6d32\u54c1\u724c\u4e2d\u8f83\u4e3a\u7f55\u89c1\uff0c\u4f46\u6211\u4eec\u4e4b\u524d\u4e5f\u66fe\u9047\u5230\u4e00\u8f86\u65af\u5df4\u9c81\u68ee\u6797\u4eba\u7531\u4e8eDPFE\u4f20\u611f\u5668\u6545\u969c\u800c\u51fa\u73b0P1408\u3002\u7f8e\u56fd\u8f66\u5982\u798f\u7279\u548c\u96ea\u4f5b\u5170\u4e5f\u4f1a\u51fa\u73b0\u8fd9\u79cd\u95ee\u9898\uff0c\u4f46\u76f8\u6bd4\u6b27\u6d32\u54c1\u724c\uff0c\u8fd9\u79cd\u60c5\u51b5\u8f83\u5c11\u89c1\u3002<\/p>\n<\/div>\n<h2 id=\"code-basics\">\u4ee3\u7801\u57fa\u7840<\/h2>\n<ul>\n<li>P1408\u4ee3\u7801\u8868\u660e\u6392\u6c14\u518d\u5faa\u73af\uff08EGR\uff09\u7cfb\u7edf\u7684\u6d41\u91cf\u5728EGR\u7cfb\u7edf\u81ea\u6d4b\u8fc7\u7a0b\u4e2d\u8d85\u51fa\u4e86\u9884\u671f\u8303\u56f4\u3002<\/li>\n<li>P1408\u7684\u901a\u7528\u5b9a\u4e49\u9002\u7528\u4e8e\u5927\u591a\u6570\u54c1\u724c\u548c\u578b\u53f7\u3002\u7136\u800c\uff0c\u4e0d\u540c\u8f66\u8f86\u7684EGR\u7cfb\u7edf\u914d\u7f6e\u548c\u7ec4\u4ef6\u53ef\u80fd\u6709\u6240\u4e0d\u540c\u3002<\/li>\n<li>\u5f53P1408\u4ee3\u7801\u89e6\u53d1\u65f6\uff0c\u4e3b\u8981\u6d89\u53ca\u7684\u7ec4\u4ef6\u5305\u62ecEGR\u9600\u3001EGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u3001\u5dee\u538b\u53cd\u9988EGR\uff08DPFE\uff09\u4f20\u611f\u5668\u4ee5\u53ca\u76f8\u5173\u7684\u771f\u7a7a\u7ba1\u548c\u7535\u8def\u3002<\/li>\n<\/ul>\n<h2 id=\"parts-and-operation\">\u90e8\u4ef6\u4e0e\u64cd\u4f5c<\/h2>\n<ul>\n<li>EGR\u7cfb\u7edf\u5c06\u4e00\u90e8\u5206\u6392\u6c14\u6c14\u4f53\u91cd\u65b0\u5f15\u5bfc\u56de\u8fdb\u6c14\u6b67\u7ba1\uff0c\u4ee5\u964d\u4f4e\u71c3\u70e7\u6e29\u5ea6\u5e76\u51cf\u5c11\u6c2e\u6c27\u5316\u7269\u6392\u653e\u3002<\/li>\n<li>EGR\u9600\u63a7\u5236\u5e9f\u6c14\u8fdb\u5165\u8fdb\u6c14\u6b67\u7ba1\u7684\u6d41\u91cf\uff0c\u901a\u5e38\u7531\u53d1\u52a8\u673a\u771f\u7a7a\u9a71\u52a8\u5e76\u53d7PCM\u63a7\u5236\u3002<\/li>\n<li>DPFE\u4f20\u611f\u5668\u901a\u8fc7\u8ba1\u91cf\u5b54\u6d4b\u91cf\u538b\u5dee\uff0c\u5e76\u5c06EGR\u6d41\u91cf\u53cd\u9988\u7ed9PCM\u3002<\/li>\n<li>\u771f\u7a7a\u7ba1\u5c06\u771f\u7a7a\u4fe1\u53f7\u4f20\u9012\u5230EGR\u9600\u548cEGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u3002\u7535\u6c14\u8fde\u63a5\u4e3a\u7ec4\u4ef6\u4e0ePCM\u4e4b\u95f4\u63d0\u4f9b\u7535\u6e90\u548c\u4fe1\u53f7\u8def\u5f84\u3002<\/li>\n<li>\u5728\u64cd\u4f5c\u8fc7\u7a0b\u4e2d\uff0cPCM\u547d\u4ee4EGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u5e94\u7528\u771f\u7a7a\u6253\u5f00EGR\u9600\uff0c\u5141\u8bb8\u5e9f\u6c14\u6d41\u52a8\u3002DPFE\u4f20\u611f\u5668\u7684\u4fe1\u53f7\u7528\u4e8e\u76d1\u63a7\u5e76\u8c03\u6574EGR\u6d41\u91cf\u4ee5\u5b9e\u73b0\u6700\u4f73\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<ul>\n<li>EGR\u7cfb\u7edf\u8f6f\u7ba1\u548c\u8fde\u63a5\u5904\u7684\u771f\u7a7a\u6cc4\u6f0f\u662fP1408\u7684\u5e38\u89c1\u539f\u56e0\u4e4b\u4e00\u3002<\/li>\n<li>\u5361\u4f4f\u7684EGR\u9600\uff08\u5361\u5728\u5f00\u542f\u6216\u5173\u95ed\u72b6\u6001\uff09\u4f1a\u5bfc\u81f4EGR\u6d41\u91cf\u4e0d\u6b63\u786e\u3002<\/li>\n<li>EGR\u901a\u9053\u7684\u5835\u585e\u6216EGR\u9600\u7684\u5835\u585e\u4f1a\u9650\u5236\u6d41\u91cf\u5e76\u89e6\u53d1\u4ee3\u7801\u3002<\/li>\n<li>DPFE\u4f20\u611f\u5668\u7535\u8def\u3001EGR\u7535\u78c1\u9600\u7535\u8def\u6216\u635f\u574f\u7684\u7535\u7ebf\u4e2d\u7684\u7535\u6c14\u6545\u969c\u4f1a\u5bfc\u81f4EGR\u7cfb\u7edf\u64cd\u4f5c\u4e0d\u6b63\u786e\u3002<\/li>\n<li>\u5728\u4e00\u4e9b\u798f\u7279\u8f66\u8f86\u4e2d\uff0c\u6cc4\u6f0f\u7684EGR\u9600\u57ab\u7247\u662f\u5e38\u89c1\u95ee\u9898\uff0c\u4f1a\u5bfc\u81f4EGR\u9600\u5438\u5165\u7a7a\u6c14\u5e76\u89e6\u53d1P1408\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<h2 id=\"diagnosis-and-troubleshooting\">\u8bca\u65ad\u548c\u6545\u969c\u6392\u9664<\/h2>\n<ol>\n<li>\u76ee\u89c6\u68c0\u67e5EGR\u7cfb\u7edf\uff0c\u68c0\u67e5\u771f\u7a7a\u7ba1\u3001\u7535\u6c14\u8fde\u63a5\u4ee5\u53ca\u662f\u5426\u6709\u660e\u663e\u7684\u635f\u574f\u3002<\/li>\n<li>\u8fde\u63a5\u626b\u63cf\u5de5\u5177\uff0c\u68c0\u67e5\u662f\u5426\u6709\u5176\u4ed6\u6545\u969c\u4ee3\u7801\uff0c\u4ee5\u5e2e\u52a9\u786e\u5b9a\u95ee\u9898\u3002\u6e05\u9664\u4ee3\u7801\u5e76\u8fdb\u884c\u8bd5\u8f66\uff0c\u770bP1408\u662f\u5426\u518d\u6b21\u51fa\u73b0\u3002<\/li>\n<li>\u5bf9EGR\u9600\u8fdb\u884c\u76ee\u89c6\u548c\u7269\u7406\u68c0\u67e5\uff0c\u67e5\u770b\u662f\u5426\u6709\u5361\u4f4f\u6216\u6c89\u79ef\u7269\u7684\u8ff9\u8c61\u3002<\/li>\n<li>\u901a\u8fc7\u76d1\u6d4bDPFE\u4f20\u611f\u5668\u7684\u7535\u538b\u4fe1\u53f7\u8fdb\u884c\u6d4b\u8bd5\uff1aEGR\u65ad\u5f00\u65f6\u5e94\u7ea6\u4e3a0.75V\uff0c\u65bd\u52a0\u771f\u7a7a\u65f6\u5e94\u8d85\u8fc73V\u3002<\/li>\n<li>\u4f7f\u7528\u771f\u7a7a\u8ba1\u68c0\u67e5EGR\u9600\u548cEGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u7684\u771f\u7a7a\u4f9b\u5e94\u60c5\u51b5\u3002<\/li>\n<li>\u68c0\u67e5EGR\u901a\u9053\u662f\u5426\u5835\u585e\uff0c\u5982\u6709\u5fc5\u8981\uff0c\u8fdb\u884c\u6e05\u6d01\u3002<\/li>\n<li>\u6d4b\u8bd5EGR\u7535\u78c1\u9600\u7ebf\u5708\u7684\u7535\u963b\uff08\u5e94\u4e3a20-30\u6b27\u59c6\uff09\uff0c\u5e76\u68c0\u67e5\u8fde\u63a5\u5668\u7684\u7535\u6e90\u548c\u63a5\u5730\u3002<\/li>\n<li>\u6570\u5b57\u4e07\u7528\u8868\u3001\u771f\u7a7a\u8ba1\u548c\u626b\u63cf\u5de5\u5177\u662f\u6b63\u786e\u8bca\u65ad\u7684\u5fc5\u8981\u5de5\u5177\u3002<\/li>\n<li>\u5e38\u89c1\u7684\u9519\u8bef\u5305\u62ec\u672a\u5f7b\u5e95\u68c0\u67e5\u771f\u7a7a\u6cc4\u6f0f\uff0c\u4ee5\u53ca\u5728\u66f4\u6362\u90e8\u4ef6\u524d\u672a\u9a8c\u8bc1DPFE\u4f20\u611f\u5668\u4fe1\u53f7\u3002<\/li>\n<\/ol>\n<h2 id=\"repair-solutions\">\u4fee\u590d\u65b9\u6848<\/h2>\n<ul>\n<li>\u5982\u679c\u53d1\u73b0\u771f\u7a7a\u6cc4\u6f0f\uff0c\u66f4\u6362\u635f\u574f\u7684\u7ba1\u9053\u6216\u8f6f\u7ba1\uff0c\u5e76\u786e\u4fdd\u6240\u6709\u8fde\u63a5\u7d27\u5bc6\u3002<\/li>\n<li>\u5bf9\u4e8e\u5361\u4f4f\u7684EGR\u9600\uff0c\u62c6\u4e0b\u9600\u95e8\uff0c\u6e05\u6d01\u6d3b\u585e\u548c\u901a\u9053\u3002\u5982\u5361\u4f4f\u6216\u635f\u574f\u4e25\u91cd\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u6362\u3002<\/li>\n<li>\u5835\u585e\u7684EGR\u901a\u9053\u5e94\u4ed4\u7ec6\u6e05\u6d01\uff0c\u5e76\u66f4\u6362EGR\u9600\u57ab\u7247\u4ee5\u9632\u6cc4\u6f0f\u3002<\/li>\n<li>\u5982\u679cDPFE\u4f20\u611f\u5668\u3001\u7535\u78c1\u9600\u6216\u7535\u7ebf\u635f\u574f\uff0c\u5e94\u6839\u636e\u9700\u8981\u8fdb\u884c\u66f4\u6362\u3002<\/li>\n<li>\u66f4\u6362EGR\u9600\u65f6\uff0c\u4f7f\u7528\u65b0\u7684\u57ab\u7247\uff0c\u5e76\u6309\u5236\u9020\u5546\u89c4\u5b9a\u7684\u626d\u77e9\uff08\u901a\u5e38\u4e3a7-10\u78c5\u82f1\u5c3a\u621610-14\u725b\u00b7\u7c73\uff09\u62e7\u7d27\u5b89\u88c5\u87ba\u6813\u3002<\/li>\n<\/ul>\n<h2 id=\"repair-costs\">\u4fee\u590d\u8d39\u7528<\/h2>\n<ul>\n<li>\u8bca\u65ad\u548c\u4fee\u590dP1408\u4ee3\u7801\u7684\u5e73\u5747\u8d39\u7528\u4e3a75\u81f3150\u7f8e\u5143\u7684\u96f6\u4ef6\u8d39\u548c100\u81f3200\u7f8e\u5143\u7684\u4eba\u5de5\u8d39\u3002<\/li>\n<li>EGR\u9600\u901a\u5e38\u662f\u6700\u6602\u8d35\u7684\u90e8\u4ef6\uff0c\u4ef7\u683c\u8303\u56f4\u4ece50\u7f8e\u5143\u5230\u67d0\u4e9b\u8f66\u8f86\u7684200\u7f8e\u5143\u4ee5\u4e0a\u3002DPFE\u4f20\u611f\u5668\u7684\u4ef7\u683c\u901a\u5e38\u572830\u81f3100\u7f8e\u5143\u4e4b\u95f4\u3002<\/li>\n<li>\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u603b\u7ef4\u4fee\u8d39\u7528\u5728175\u81f3350\u7f8e\u5143\u4e4b\u95f4\uff08150\u81f3300\u6b27\u5143\uff09\u3002\u7136\u800c\uff0c\u8c6a\u534e\u8f66\u548c\u9ad8\u6027\u80fd\u8f66\u7684\u96f6\u4ef6\u6210\u672c\u53ef\u80fd\u4f1a\u9ad8\u5f97\u591a\u3002<\/li>\n<\/ul>\n<h2 id=\"prevention-and-maintenance\">\u9884\u9632\u548c\u7ef4\u62a4<\/h2>\n<ul>\n<li>\u5b9a\u671f\u8fdb\u884c\u7ef4\u62a4\uff0c\u5305\u62ec\u66f4\u6362\u673a\u6cb9\u548c\u7a7a\u6c14\u6ee4\u6e05\u5668\uff0c\u6709\u52a9\u4e8e\u51cf\u5c11EGR\u7cfb\u7edf\u4e2d\u7684\u78b3\u79ef\u805a\u3002<\/li>\n<li>\u5b9a\u671f\u68c0\u67e5\u771f\u7a7a\u7ba1\u7ebf\u548c\u7535\u6c14\u8fde\u63a5\uff0c\u53ef\u4ee5\u5728\u95ee\u9898\u89e6\u53d1\u4ee3\u7801\u4e4b\u524d\u53d1\u73b0\u5b83\u4eec\u3002<\/li>\n<li>\u5982\u679cEGR\u9600\u5361\u4f4f\u6216\u53d1\u52a8\u673a\u6020\u901f\u4e0d\u7a33\uff0c\u6e05\u6d01EGR\u901a\u9053\u548c\u9600\u95e8\u901a\u5e38\u53ef\u4ee5\u6062\u590d\u6b63\u5e38\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<ul>\n<li>\u4e0eP1408\u4e00\u8d77\u53ef\u80fd\u51fa\u73b0\u7684\u5176\u4ed6\u4ee3\u7801\u5305\u62ec<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p0401-exhaust-gas-recirculation-flow-insufficient-detected-a-technical-description\/\" title=\"P0401\uff08EGR\u6d41\u91cf\u4e0d\u8db3\uff09\">P0401\uff08EGR\u6d41\u91cf\u4e0d\u8db3\uff09<\/a>\u3001P0402\uff08EGR\u6d41\u91cf\u8fc7\u5927\uff09\u548c<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p1409-egr-vacuum-system-leak-detected\/\" title=\"P1409\uff08EGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u7535\u8def\u6545\u969c\uff09\">P1409\uff08EGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u7535\u8def\u6545\u969c\uff09<\/a>\u3002<\/li>\n<li>\u4e0eEGR\u7cfb\u7edf\u6545\u969c\u76f8\u5173\u7684\u75c7\u72b6\u5305\u62ec\u6020\u901f\u4e0d\u7a33\u3001\u52a0\u901f\u65f6\u6ede\u540e\u3001\u71c3\u6cb9\u6d88\u8017\u589e\u52a0\u548c\u6392\u653e\u6d4b\u8bd5\u5931\u8d25\u3002<\/li>\n<li>EGR\u95ee\u9898\u53ef\u80fd\u5bfc\u81f4\u71c3\u70e7\u6e29\u5ea6\u5347\u9ad8\uff0c\u5982\u679c\u4e0d\u89e3\u51b3\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1\u7206\u9707\u4f20\u611f\u5668\u4ee3\u7801\uff0c\u751a\u81f3\u5bfc\u81f4\u53d1\u52a8\u673a\u635f\u574f\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u9075\u5faa\u672c\u8bca\u65ad\u548c\u7ef4\u4fee\u6307\u5357\uff0c\u5de5\u7a0b\u5e08\u548c\u673a\u68b0\u5e08\u5e94\u8be5\u80fd\u591f\u6709\u6548\u5730\u6392\u67e5\u548c\u89e3\u51b3\u8f66\u8f86\u4e0a\u7684P1408\u6545\u969c\u4ee3\u7801\u3002\u6b63\u786e\u7684\u8bca\u65ad\u548c\u7ef4\u4fee\u5c06\u6062\u590d\u53d1\u52a8\u673a\u6027\u80fd\uff0c\u51cf\u5c11\u6392\u653e\uff0c\u5e76\u5e2e\u52a9\u9632\u6b62EGR\u7cfb\u7edf\u548c\u76f8\u5173\u7ec4\u4ef6\u7684\u8fdb\u4e00\u6b65\u635f\u574f\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-p1408-diagnostic-trouble-code\">\u5173\u4e8eP1408\u8bca\u65ad\u6545\u969c\u4ee3\u7801\u7684\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h2>\n<h3 id=\"what-does-the-p1408-code-mean-\">P1408\u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>P1408\u4ee3\u7801\u8868\u660e\u5728EGR\u7cfb\u7edf\u81ea\u6d4b\u8fc7\u7a0b\u4e2d\uff0cEGR\u7cfb\u7edf\u6d41\u91cf\u8d85\u51fa\u4e86\u9884\u671f\u8303\u56f4\u3002<\/p>\n<h3 id=\"is-it-safe-to-drive-with-a-p1408-code-\">\u5e26\u6709P1408\u4ee3\u7801\u9a7e\u9a76\u662f\u5426\u5b89\u5168\uff1f<\/h3>\n<p>\u5e26\u6709P1408\u4ee3\u7801\u7684\u8f66\u8f86\u53ef\u4ee5\u5b89\u5168\u884c\u9a76\u77ed\u8ddd\u79bb\u4ee5\u8fdb\u884c\u8bca\u65ad\u548c\u4fee\u7406\u3002\u7136\u800c\uff0c\u957f\u65f6\u95f4\u9a7e\u9a76\u53ef\u80fd\u5bfc\u81f4\u71c3\u6cb9\u7ecf\u6d4e\u6027\u4e0b\u964d\u3001\u6392\u653e\u589e\u52a0\u548c\u6f5c\u5728\u7684\u53d1\u52a8\u673a\u635f\u574f\uff0c\u56e0\u6b64\u4e0d\u5efa\u8bae\u3002<\/p>\n<h3 id=\"what-are-the-common-symptoms-of-a-p1408-code-\">P1408\u4ee3\u7801\u7684\u5e38\u89c1\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u75c7\u72b6\u5305\u62ec\u6020\u901f\u4e0d\u7a33\u3001\u52a0\u901f\u65f6\u6ede\u540e\u3001\u71c3\u6cb9\u6d88\u8017\u589e\u52a0\u4ee5\u53ca\u6392\u653e\u6d4b\u8bd5\u5931\u8d25\u3002<\/p>\n<h3 id=\"what-are-the-main-components-involved-with-the-p1408-code-\">P1408\u4ee3\u7801\u6d89\u53ca\u54ea\u4e9b\u4e3b\u8981\u7ec4\u4ef6\uff1f<\/h3>\n<p>\u6d89\u53ca\u7684\u4e3b\u8981\u7ec4\u4ef6\u5305\u62ecEGR\u9600\u3001EGR\u771f\u7a7a\u8c03\u8282\u7535\u78c1\u9600\u3001\u5dee\u538b\u53cd\u9988EGR\uff08DPFE\uff09\u4f20\u611f\u5668\u4ee5\u53ca\u76f8\u5173\u7684\u771f\u7a7a\u7ba1\u548c\u7535\u8def\u3002<\/p>\n<h3 id=\"how-does-the-egr-system-work-\">EGR\u7cfb\u7edf\u5982\u4f55\u5de5\u4f5c\uff1f<\/h3>\n<p>EGR\u7cfb\u7edf\u5c06\u90e8\u5206\u5e9f\u6c14\u91cd\u65b0\u5f15\u5bfc\u56de\u8fdb\u6c14\u6b67\u7ba1\uff0c\u4ee5\u964d\u4f4e\u71c3\u70e7\u6e29\u5ea6\u5e76\u51cf\u5c11\u6c2e\u6c27\u5316\u7269\u6392\u653e\u3002EGR\u9600\u63a7\u5236\u6c14\u4f53\u6d41\u91cf\uff0c\u7531\u53d1\u52a8\u673a\u771f\u7a7a\u9a71\u52a8\u5e76\u7531PCM\u63a7\u5236\u3002<\/p>\n<h3 id=\"what-are-common-causes-of-a-p1408-code-\">P1408\u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u539f\u56e0\u5305\u62ecEGR\u7cfb\u7edf\u8f6f\u7ba1\u4e2d\u7684\u771f\u7a7a\u6cc4\u6f0f\u3001\u5361\u4f4f\u7684EGR\u9600\u3001EGR\u901a\u9053\u53d7\u9650\u3001\u7535\u6c14\u6545\u969c\u6216\u635f\u574f\u7684\u7ebf\u675f\u3002<\/p>\n<h3 id=\"how-is-a-p1408-code-diagnosed-\">\u5982\u4f55\u8bca\u65adP1408\u4ee3\u7801\uff1f<\/h3>\n<p>\u8bca\u65ad\u5305\u62ec\u76ee\u89c6\u68c0\u67e5EGR\u7cfb\u7edf\u90e8\u4ef6\u3001\u68c0\u67e5\u662f\u5426\u6709\u5176\u4ed6\u6545\u969c\u4ee3\u7801\u3001\u6d4b\u8bd5DPFE\u4f20\u611f\u5668\u4fe1\u53f7\u548cEGR\u9600\u64cd\u4f5c\uff0c\u5e76\u9a8c\u8bc1\u771f\u7a7a\u4f9b\u5e94\u548c\u7535\u6c14\u8fde\u63a5\u3002<\/p>\n<h3 id=\"what-tools-are-needed-to-diagnose-a-p1408-code-\">\u8bca\u65adP1408\u4ee3\u7801\u9700\u8981\u54ea\u4e9b\u5de5\u5177\uff1f<\/h3>\n<p>\u6570\u5b57\u4e07\u7528\u8868\u3001\u771f\u7a7a\u8ba1\u548c\u626b\u63cf\u5de5\u5177\u662f\u8bca\u65adP1408\u6240\u9700\u7684\u57fa\u672c\u5de5\u5177\u3002<\/p>\n<h3 id=\"what-are-the-common-mistakes-when-diagnosing-p1408-\">\u8bca\u65adP1408\u65f6\u5e38\u89c1\u7684\u9519\u8bef\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u9519\u8bef\u5305\u62ec\u672a\u5f7b\u5e95\u68c0\u67e5\u771f\u7a7a\u6cc4\u6f0f\u4ee5\u53ca\u5728\u66f4\u6362\u90e8\u4ef6\u4e4b\u524d\u672a\u9a8c\u8bc1DPFE\u4f20\u611f\u5668\u4fe1\u53f7\u3002<\/p>\n<h3 id=\"how-is-a-p1408-code-repaired-\">\u5982\u4f55\u4fee\u590dP1408\u4ee3\u7801\uff1f<\/h3>\n<p>\u4fee\u590d\u901a\u5e38\u5305\u62ec\u66f4\u6362\u635f\u574f\u7684\u771f\u7a7a\u7ba1\u3001\u6e05\u6d01\u6216\u66f4\u6362EGR\u9600\u548c\u901a\u9053\uff0c\u4ee5\u53ca\u4fee\u590d\u4efb\u4f55\u53d1\u73b0\u7684\u7535\u6c14\u6545\u969c\u3002<\/p>\n<h3 id=\"what-is-the-average-cost-to-fix-a-p1408-code-\">\u4fee\u590dP1408\u4ee3\u7801\u7684\u5e73\u5747\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590dP1408\u4ee3\u7801\u7684\u5e73\u5747\u8d39\u7528\u572875\u81f3150\u7f8e\u5143\u7684\u96f6\u4ef6\u8d39\u548c100\u81f3200\u7f8e\u5143\u7684\u4eba\u5de5\u8d39\u4e4b\u95f4\u3002EGR\u9600\u901a\u5e38\u662f\u6700\u6602\u8d35\u7684\u90e8\u4ef6\u3002<\/p>\n<h3 id=\"can-regular-maintenance-help-prevent-egr-system-issues-\">\u5b9a\u671f\u7ef4\u62a4\u662f\u5426\u6709\u52a9\u4e8e\u9632\u6b62EGR\u7cfb\u7edf\u95ee\u9898\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u5b9a\u671f\u8fdb\u884c\u7ef4\u62a4\uff0c\u5982\u6362\u6cb9\u548c\u66f4\u6362\u7a7a\u6c14\u6ee4\u6e05\u5668\uff0c\u6709\u52a9\u4e8e\u51cf\u5c11EGR\u7cfb\u7edf\u4e2d\u7684\u78b3\u79ef\u805a\u3002\u5b9a\u671f\u68c0\u67e5\u771f\u7a7a\u7ba1\u7ebf\u548c\u7535\u6c14\u8fde\u63a5\u53ef\u4ee5\u5c3d\u65e9\u53d1\u73b0\u95ee\u9898\u3002<\/p>\n<h3 id=\"are-there-any-tsbs-or-recalls-related-to-p1408-\">\u662f\u5426\u6709\u4e0eP1408\u76f8\u5173\u7684\u6280\u672f\u670d\u52a1\u516c\u544a\u6216\u53ec\u56de\uff1f<\/h3>\n<p>\u76ee\u524d\u6ca1\u6709\u5df2\u77e5\u7684\u4e13\u95e8\u9488\u5bf9P1408\u4ee3\u7801\u7684\u6280\u672f\u670d\u52a1\u516c\u544a\u6216\u53ec\u56de\u3002\u7136\u800c\uff0c\u67d0\u4e9b\u8f66\u8f86\u7684EGR\u7cfb\u7edf\u95ee\u9898\u53ef\u80fd\u4f1a\u6709\u76f8\u5173\u7684\u6280\u672f\u670d\u52a1\u516c\u544a\u3002<\/p>\n<h3 id=\"can-a-p1408-code-cause-other-issues-if-left-unrepaired-\">\u5982\u679c\u4e0d\u4fee\u590dP1408\u4ee3\u7801\uff0c\u5b83\u4f1a\u5bfc\u81f4\u5176\u4ed6\u95ee\u9898\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0cEGR\u95ee\u9898\u53ef\u80fd\u5bfc\u81f4\u71c3\u70e7\u6e29\u5ea6\u5347\u9ad8\uff0c\u5982\u679c\u4e0d\u89e3\u51b3\uff0c\u53ef\u80fd\u5f15\u53d1\u7206\u9707\u4f20\u611f\u5668\u4ee3\u7801\uff0c\u751a\u81f3\u5bfc\u81f4\u53d1\u52a8\u673a\u635f\u574f\u3002<\/p>\n<h3 id=\"is-the-definition-of-p1408-the-same-across-all-makes-and-models-\">P1408\u7684\u5b9a\u4e49\u5728\u6240\u6709\u54c1\u724c\u548c\u578b\u53f7\u4e2d\u662f\u5426\u76f8\u540c\uff1f<\/h3>\n<p>P1408\u7684\u901a\u7528\u5b9a\u4e49\u9002\u7528\u4e8e\u5927\u591a\u6570\u8f66\u8f86\uff0c\u8868\u793aEGR\u6d41\u91cf\u6545\u969c\u3002\u7136\u800c\uff0c\u4e0d\u540c\u54c1\u724c\u548c\u578b\u53f7\u7684EGR\u7cfb\u7edf\u7ec4\u4ef6\u548c\u914d\u7f6e\u53ef\u80fd\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3 id=\"can-a-p1408-code-be-caused-by-issues-other-than-the-egr-system-\">P1408\u4ee3\u7801\u53ef\u4ee5\u7531EGR\u7cfb\u7edf\u4ee5\u5916\u7684\u95ee\u9898\u5f15\u8d77\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u4e0d\u5e38\u89c1\uff0c\u4f46P1408\u4ee3\u7801\u53ef\u80fd\u7531\u5176\u4ed6\u7cfb\u7edf\u6545\u969c\u5f15\u53d1\uff0c\u4f8b\u5982\u5f71\u54cdEGR\u64cd\u4f5c\u7684PCM\u6216\u53d1\u52a8\u673a\u771f\u7a7a\u4f9b\u5e94\u95ee\u9898\u3002<\/p>\n<h3 id=\"how-do-i-clear-a-p1408-code-\">\u5982\u4f55\u6e05\u9664P1408\u4ee3\u7801\uff1f<\/h3>\n<p>\u53ef\u4ee5\u4f7f\u7528\u626b\u63cf\u5de5\u5177\u6216\u65ad\u5f00\u7535\u6c60\u6765\u6e05\u9664P1408\u4ee3\u7801\u3002\u7136\u800c\uff0c\u5982\u679c\u6839\u672c\u95ee\u9898\u6ca1\u6709\u4fee\u590d\uff0c\u4ee3\u7801\u53ef\u80fd\u4f1a\u518d\u6b21\u51fa\u73b0\u3002<\/p>\n<h3 id=\"what-other-codes-may-appear-along-with-p1408-\">P1408\u4ee3\u7801\u53ef\u80fd\u4f34\u968f\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\uff1f<\/h3>\n<p>\u4e0eP1408\u4e00\u8d77\u53ef\u80fd\u51fa\u73b0\u7684\u76f8\u5173\u4ee3\u7801\u5305\u62ec<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p0401-exhaust-gas-recirculation-flow-insufficient-detected-a-technical-description\/\" title=\"P0401\uff08EGR\u6d41\u91cf\u4e0d\u8db3\uff09\">P0401\uff08EGR\u6d41\u91cf\u4e0d\u8db3\uff09<\/a>\u3001P0402\uff08EGR\u6d41\u91cf\u8fc7\u5927\uff09\u548c<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p1409-egr-vacuum-system-leak-detected\/\" 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