{"id":288174,"date":"2024-10-28T05:55:32","date_gmt":"2024-10-28T05:55:32","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=288174"},"modified":"2024-10-29T10:09:10","modified_gmt":"2024-10-29T10:09:10","slug":"spn-4094-nox-limits-exceeded-due-to-insufficient-def-quality","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/spn-4094-nox-limits-exceeded-due-to-insufficient-def-quality\/","title":{"rendered":"SPN 4094 \u2013 \u7531\u4e8eDEF\u8d28\u91cf\u4e0d\u8db3\u5bfc\u81f4NOx\u9650\u503c\u8d85\u6807"},"content":{"rendered":"<h2 id=\"introduction\">\u7b80\u4ecb<\/h2>\n<p>\u6545\u969c\u4ee3\u7801SPN 4094\u662f\u4e00\u79cd\u901a\u7528\u8bca\u65ad\u6545\u969c\u4ee3\u7801 (DTC)\uff0c\u8868\u660e\u6392\u6c14\u7cfb\u7edf\u4e2d\u7684NOx\uff08\u6c2e\u6c27\u5316\u7269\uff09\u9650\u503c\u5df2\u8d85\u6807\u3002\u6b64\u4ee3\u7801\u901a\u5e38\u51fa\u73b0\u5728\u914d\u5907\u67f4\u6cb9\u53d1\u52a8\u673a\u548cSCR\uff08\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f\uff09\u540e\u5904\u7406\u7cfb\u7edf\u7684\u91cd\u578b\u5361\u8f66\u548c\u516c\u4ea4\u8f66\u4e0a\u3002\u5f53SPN 4094\u88ab\u89e6\u53d1\u65f6\uff0c\u8f66\u8f86\u53ef\u80fd\u8fdb\u5165\u964d\u7ea7\u6a21\u5f0f\uff0c\u9650\u5236\u53d1\u52a8\u673a\u529f\u7387\u548c\u901f\u5ea6\u3002\u867d\u7136\u5728\u77ed\u65f6\u95f4\u5185\u53ef\u4ee5\u7ee7\u7eed\u884c\u9a76\uff0c\u4f46\u5efa\u8bae\u5c3d\u5feb\u8fdb\u884c\u8bca\u65ad\u548c\u5904\u7406\uff0c\u4ee5\u907f\u514d\u8fdb\u4e00\u6b65\u635f\u574f\u548c\u505c\u673a\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\u91cc\uff0c\u6211\u4eec\u7ecf\u5e38\u9047\u5230SPN 4094\u6545\u969c\u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u6b27\u6d32\u54c1\u724c\u5982\u6c83\u5c14\u6c83\uff08Volvo\uff09\u3001\u9ea6\u514b\uff08Mack\uff09\u548c\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\uff08Mercedes-Benz\uff09\u5361\u8f66\u4e0a\u3002\u5c31\u5728\u4e0a\u5468\uff0c\u4e00\u8f862012\u5e74\u6c83\u5c14\u6c83\u8f66\u8f86\u51fa\u73b0\u4e86SPN 4094 FMI 18\u6545\u969c\u4ee3\u7801\uff0c\u540c\u65f6\u4f34\u968f\u4e00\u4e9b\u4e0e\u540e\u5904\u7406\u7cfb\u7edf\u76f8\u5173\u7684\u5176\u4ed6\u4ee3\u7801\u3002\u6211\u4eec\u6309\u5e38\u89c4\u8bca\u65ad\u6b65\u9aa4\u68c0\u67e5\u4e86DEF\u8d28\u91cf\u3001\u55b7\u5c04\u9600\u4ee5\u53caNOx\u4f20\u611f\u5668\u3002\u66f4\u6362\u4e86\u6709\u6545\u969c\u7684NOx\u4f20\u611f\u5668\u5e76\u5f3a\u5236DPF\u518d\u751f\u540e\uff0c\u4ee3\u7801\u88ab\u6e05\u9664\uff0c\u4f46\u51e0\u5929\u540e\u53c8\u51fa\u73b0\u4e86\u3002\u8fd9\u662f\u4e00\u4e2a\u4ee4\u4eba\u5934\u75bc\u7684\u95ee\u9898\uff0c\u5373\u4f7f\u7ef4\u4fee\u540e\u4e5f\u5e38\u5e38\u53cd\u590d\u51fa\u73b0\u3002\u6839\u636e\u6211\u5728\u8bba\u575b\u4e0a\u7684\u89c2\u5bdf\uff0c\u8bb8\u591a\u5176\u4ed6\u8f66\u95f4\u4e5f\u5728\u5904\u7406\u6b27\u6d32\u5361\u8f66\u4e0a\u7684\u76f8\u540c\u95ee\u9898\u3002\u6709\u4e9b\u4eba\u901a\u8fc7\u66f4\u6362DEF\u55b7\u5c04\u9600\u6216\u6e05\u6d01EGR\u901a\u9053\u89e3\u51b3\u4e86\u95ee\u9898\uff0c\u4f46\u8fd9\u5e76\u4e0d\u662f\u4fdd\u8bc1\u7684\u4fee\u590d\u65b9\u6cd5\u3002SPN 4094\u786e\u5b9e\u8ba9\u6211\u4eec\u59cb\u7ec8\u4fdd\u6301\u8b66\u60d5\uff0c\u89e3\u51b3\u5b83\u9700\u8981\u575a\u6301\u4e0d\u61c8\u3002<\/p>\n<\/div>\n<h2 id=\"understanding-spn-4094\">\u7406\u89e3SPN 4094<\/h2>\n<p>SPN 4094\u7279\u6307\u6392\u6c14\u4e2d\u7684NOx\u6c34\u5e73\u8d85\u8fc7\u4e86\u53d1\u52a8\u673a\u63a7\u5236\u6a21\u5757\uff08ECM\uff09\u8bbe\u5b9a\u7684\u5141\u8bb8\u9650\u503c\u3002ECM\u4f1a\u4e0d\u65ad\u76d1\u6d4bSCR\u50ac\u5316\u5242\u524d\u540e\u7684NOx\u4f20\u611f\u5668\uff0c\u4ee5\u786e\u5b9a\u540e\u5904\u7406\u7cfb\u7edf\u662f\u5426\u9ad8\u6548\u8fd0\u884c\u3002\u5982\u679c\u4e0b\u6e38\u7684NOx\u4f20\u611f\u5668\u68c0\u6d4b\u5230\u8d85\u51fa\u9608\u503c\u7684\u6c34\u5e73\uff0cSPN 4094\u5c06\u88ab\u89e6\u53d1\u3002<\/p>\n<p>\u6b64\u6545\u969c\u4ee3\u7801\u5728\u6240\u6709\u91c7\u7528J1939\u534f\u8bae\u7684\u91cd\u578b\u8f66\u8f86\u4e2d\u88ab\u8ba4\u4e3a\u662f\u901a\u7528\u7684\u3002\u7136\u800c\uff0c\u4e0d\u540c\u53d1\u52a8\u673a\u5236\u9020\u5546\u4e4b\u95f4\u7684\u5177\u4f53NOx\u9650\u503c\u548c\u964d\u7ea7\u6761\u4ef6\u53ef\u80fd\u7565\u6709\u4e0d\u540c\u3002<\/p>\n<h2 id=\"parts-involved-\">\u76f8\u5173\u90e8\u4ef6<\/h2>\n<ul>\n<li>SCR\u50ac\u5316\u5242<\/li>\n<li>DEF\u55b7\u5c04\u5668<\/li>\n<li>NOx\u4f20\u611f\u5668<\/li>\n<li>DEF\u6cb9\u7bb1\u548c\u4f9b\u5e94\u7cfb\u7edf<\/li>\n<\/ul>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>SPN 4094\u6700\u5e38\u89c1\u7684\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>DEF\u6db2\u4f53\u53d8\u8d28\u6216\u6c61\u67d3<\/li>\n<li>DEF\u55b7\u5c04\u5668\u6545\u969c\u6216\u55b7\u5c04\u95ee\u9898<\/li>\n<li>SCR\u50ac\u5316\u5242\u5835\u585e\u6216\u635f\u574f<\/li>\n<li>NOx\u4f20\u611f\u5668\u6545\u969c<\/li>\n<li>SCR\u7cfb\u7edf\u524d\u7684\u6392\u6c14\u6cc4\u6f0f<\/li>\n<li>DEF\u6db2\u4f4d\u4f4e<\/li>\n<li>DEF\u4f9b\u5e94\u7cfb\u7edf\u95ee\u9898\uff08\u6cf5\u3001\u7ba1\u8def\u3001\u6ee4\u7f51\u7b49\uff09<\/li>\n<\/ol>\n<h2 id=\"diagnosis\">\u8bca\u65ad<\/h2>\n<p>\u8981\u6b63\u786e\u8bca\u65adSPN 4094\uff0c\u8bf7\u6309\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u626b\u63cf\u6240\u6709\u6d3b\u52a8\u6545\u969c\u4ee3\u7801\u3002\u8bb0\u5f55\u4efb\u4f55\u5176\u4ed6\u4ee3\u7801\uff0c\u7279\u522b\u662f\u4e0e\u540e\u5904\u7406\u7cfb\u7edf\u76f8\u5173\u7684\u4ee3\u7801\u3002<\/li>\n<li>\u68c0\u67e5DEF\u6db2\u4f4d\u548c\u8d28\u91cf\u3002\u786e\u4fdd\u6db2\u4f53\u6e05\u6f88\u4e14\u672a\u8d85\u8fc7\u4fdd\u8d28\u671f\u3002<\/li>\n<li>\u4f7f\u7528\u6298\u5c04\u4eea\u8fdb\u884cDEF\u8d28\u91cf\u6d4b\u8bd5\u3002DEF\u5e94\u5177\u670931.8-33.2%\u7684\u5c3f\u7d20\u6d53\u5ea6\u3002<\/li>\n<li>\u68c0\u67e5DEF\u55b7\u5c04\u5668\u7684\u55b7\u96fe\u56fe\u6848\u548c\u6d41\u91cf\u3002\u6839\u636e\u9700\u8981\u6e05\u6d01\u6216\u66f4\u6362\u3002<\/li>\n<li>\u8fdb\u884cNOx\u4f20\u611f\u5668\u8bc4\u4f30\uff0c\u68c0\u67e5\u51c6\u786e\u6027\u548c\u54cd\u5e94\u65f6\u95f4\u3002\u66f4\u6362\u6545\u969c\u4f20\u611f\u5668\u3002<\/li>\n<li>\u68c0\u67e5SCR\u7cfb\u7edf\u524d\u7684\u4efb\u4f55\u6392\u6c14\u6cc4\u6f0f\uff0c\u4ee5\u9632\u6b62\u672a\u8ba1\u91cf\u7684\u7a7a\u6c14\u8fdb\u5165\u3002<\/li>\n<li>\u8bc4\u4f30SCR\u50ac\u5316\u5242\u7684\u635f\u574f\u6216\u5835\u585e\u8ff9\u8c61\u3002<\/li>\n<li>\u786e\u8ba4DEF\u6cf5\u548c\u4f9b\u7ed9\u7ba1\u8def\u7684\u6b63\u5e38\u529f\u80fd\u3002\u4fee\u590d\u4efb\u4f55\u6cc4\u6f0f\u6216\u963b\u585e\u3002<\/li>\n<\/ol>\n<h2 id=\"tools-needed-\">\u6240\u9700\u5de5\u5177<\/h2>\n<ul>\n<li>\u5177\u5907J1939\u534f\u8bae\u7684\u8bca\u65ad\u626b\u63cf\u5de5\u5177<\/li>\n<li>DEF\u6298\u5c04\u4eea<\/li>\n<li>\u4e07\u7528\u8868<\/li>\n<li>\u6392\u6c14\u80cc\u538b\u8868<\/li>\n<\/ul>\n<h2 id=\"repair-solutions\">\u7ef4\u4fee\u65b9\u6848<\/h2>\n<p>\u5728\u627e\u5230\u6839\u672c\u539f\u56e0\u540e\uff0c\u6839\u636e\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u7ef4\u4fee\uff1a<\/p>\n<ul>\n<li>\u66f4\u6362\u53d7\u6c61\u67d3\u6216\u8fc7\u671f\u7684DEF\u6db2\u4f53<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u5835\u585e\u7684DEF\u55b7\u5c04\u5668<\/li>\n<li>\u4fee\u590d\u4efb\u4f55\u6392\u6c14\u6cc4\u6f0f<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684NOx\u4f20\u611f\u5668<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u5835\u585e\u7684SCR\u50ac\u5316\u5242<\/li>\n<li>\u4fee\u590dDEF\u4f9b\u5e94\u7cfb\u7edf\u95ee\u9898\uff08\u6cf5\u3001\u7ba1\u8def\u3001\u6ee4\u7f51\u7b49\uff09<\/li>\n<\/ul>\n<p>\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u7ef4\u4fee\u53ef\u4ee5\u7531\u719f\u7ec3\u7684\u6280\u5e08\u5b8c\u6210\u3002\u4f46\u59cb\u7ec8\u5e94\u53c2\u8003\u5236\u9020\u5546\u7684\u670d\u52a1\u4fe1\u606f\uff0c\u4ee5\u83b7\u53d6\u7279\u5b9a\u7684\u64cd\u4f5c\u6b65\u9aa4\u548c\u626d\u77e9\u89c4\u8303\u3002\u66f4\u6362\u4e3b\u8981\u90e8\u4ef6\u5982SCR\u50ac\u5316\u5242\u6216DEF\u55b7\u5c04\u5668\u53ef\u80fd\u9700\u8981\u4e13\u4e1a\u5de5\u5177\uff0c\u5efa\u8bae\u7531\u6388\u6743\u7ef4\u4fee\u4e2d\u5fc3\u6280\u5e08\u5b8c\u6210\u3002<\/p>\n<h2 id=\"repair-costs\">\u7ef4\u4fee\u6210\u672c<\/h2>\n<p>\u4fee\u590d\u5bfc\u81f4SPN 4094\u7684\u6545\u969c\u7684\u6210\u672c\u56e0\u6839\u672c\u539f\u56e0\u548c\u7279\u5b9a\u8f66\u8f86\u800c\u5f02\u3002<\/p>\n<ul>\n<li>DEF\u6db2\u4f53\uff1a$5-7\/\u52a0\u4ed1\uff08$1.32-1.85\/\u5347\uff09<\/li>\n<li>DEF\u55b7\u5c04\u5668\uff1a$500-800\uff08\u20ac460-740\uff09<\/li>\n<li>NOx\u4f20\u611f\u5668\uff1a\u6bcf\u4e2a$300-600\uff08\u20ac280-550\uff09<\/li>\n<li>SCR\u50ac\u5316\u5242\uff1a$1500-3000\uff08\u20ac1400-2800\uff09<\/li>\n<li>DEF\u6cf5\uff1a$600-1200\uff08\u20ac550-1100\uff09<\/li>\n<\/ul>\n<p>\u4eba\u5de5\u8d39\u7528\u901a\u5e38\u5728$100-175\/\u5c0f\u65f6\uff08\u20ac90-160\uff09\uff0c\u5927\u591a\u6570\u7ef4\u4fee\u9700\u65f62-8\u5c0f\u65f6\uff0c\u5177\u4f53\u89c6\u6545\u969c\u548c\u90e8\u4ef6\u4f4d\u7f6e\u800c\u5b9a\u3002<\/p>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<p>\u4e3a\u4e86\u9884\u9632SPN 4094\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u4ec5\u4f7f\u7528\u6765\u81ea\u4fe1\u8a89\u826f\u597d\u7684\u4f9b\u5e94\u5546\u7684\u4f18\u8d28DEF\u6db2\u4f53<\/li>\n<li>\u4fdd\u6301\u6cb9\u7bb1\u4e2d\u7684DEF\u6db2\u4f53\u9002\u5f53\u6c34\u5e73<\/li>\n<li>\u9075\u5b88\u5236\u9020\u5546\u5bf9\u540e\u5904\u7406\u7cfb\u7edf\u7684\u63a8\u8350\u7ef4\u62a4\u95f4\u9694<\/li>\n<li>\u53ca\u65f6\u89e3\u51b3\u4efb\u4f55\u6db2\u4f53\u6cc4\u6f0f\u6216\u53d1\u52a8\u673a\u95ee\u9898<\/li>\n<li>\u907f\u514d\u8fc7\u5ea6\u6020\u901f\u4ee5\u51cf\u5c11SCR\u7cfb\u7edf\u4e2d\u7684\u79ef\u70ad<\/li>\n<\/ul>\n<h2 id=\"associated-codes\">\u76f8\u5173\u4ee3\u7801<\/h2>\n<p>\u4e0eSPN 4094\u4e00\u8d77\u51fa\u73b0\u7684\u5176\u4ed6\u6545\u969c\u4ee3\u7801\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-3031-aftertreatment-1-outlet-nox-sensor-heater-issues\/\" title=\"SPN 3031 - \u540e\u5904\u74061\u51fa\u53e3NOx\u4f20\u611f\u5668\">SPN 3031 &#8211; \u540e\u5904\u74061\u51fa\u53e3NOx\u4f20\u611f\u5668<\/a><\/li>\n<li>SPN 4021 &#8211; \u540e\u5904\u74061\u51fa\u53e3\u6c14\u4f53\u4f20\u611f\u5668\u7535\u6e90\u72b6\u6001<\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-5394-def-dosing-valve\/\" title=\"SPN 5394 - \u540e\u5904\u74061 DEF\u55b7\u5c04\u9600\">SPN 5394 &#8211; \u540e\u5904\u74061 DEF\u55b7\u5c04\u9600<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-5435-aftertreatment-1-diesel-exhaust-fluid-pump-state\/\" title=\"SPN 5435 - \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u8d28\u91cf\">SPN 5435 &#8211; \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u8d28\u91cf<\/a><\/li>\n<li>SPN 5484 &#8211; \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u6db2\u4f4d<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u4ee3\u7801\u901a\u5e38\u8868\u660eDEF\u7cfb\u7edf\u3001NOx\u4f20\u611f\u5668\u6216SCR\u50ac\u5316\u5242\u5b58\u5728\u5bfc\u81f4SPN 4094\u6240\u6307\u7684\u9ad8NOx\u6c34\u5e73\u7684\u95ee\u9898\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-spn-4094\">\u5173\u4e8eSPN 4094\u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3 id=\"what-is-spn-4094-\">\u4ec0\u4e48\u662fSPN 4094\uff1f<\/h3>\n<p>SPN 4094\u662f\u4e00\u79cd\u901a\u7528\u8bca\u65ad\u6545\u969c\u4ee3\u7801 (DTC)\uff0c\u8868\u660e\u6392\u6c14\u4e2d\u6d4b\u5f97\u7684NOx\uff08\u6c2e\u6c27\u5316\u7269\uff09\u6c34\u5e73\u5df2\u8d85\u8fc7\u53d1\u52a8\u673a\u63a7\u5236\u6a21\u5757 (ECM)\u8bbe\u5b9a\u7684\u5141\u8bb8\u9650\u503c\u3002<\/p>\n<h3 id=\"what-are-the-symptoms-of-spn-4094-\">SPN 4094\u7684\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>SPN 4094\u88ab\u89e6\u53d1\u65f6\uff0c\u6700\u5e38\u89c1\u7684\u75c7\u72b6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u53d1\u52a8\u673a\u68c0\u67e5\u706f\u4eae<\/li>\n<li>\u53d1\u52a8\u673a\u964d\u7ea7\uff08\u529f\u7387\u548c\u901f\u5ea6\u964d\u4f4e\uff09<\/li>\n<li>DEF\uff08\u67f4\u6cb9\u6392\u6c14\u6db2\uff09\u6d88\u8017\u5f02\u5e38<\/li>\n<li>\u6392\u6c14\u5192\u767d\u70df<\/li>\n<\/ul>\n<h3 id=\"is-it-safe-to-keep-driving-with-spn-4094-\">\u89e6\u53d1SPN 4094\u540e\u7ee7\u7eed\u9a7e\u9a76\u662f\u5426\u5b89\u5168\uff1f<\/h3>\n<p>\u5f53SPN 4094\u51fa\u73b0\u65f6\uff0c\u53ef\u4ee5\u5728\u77ed\u8ddd\u79bb\u5185\u7ee7\u7eed\u9a7e\u9a76\uff0c\u4f46\u5efa\u8bae\u5c3d\u5feb\u8bca\u65ad\u548c\u89e3\u51b3\u95ee\u9898\uff0c\u4ee5\u907f\u514d\u8fdb\u4e00\u6b65\u635f\u574f\u548c\u505c\u673a\u3002\u5ffd\u89c6\u6b64\u4ee3\u7801\u53ef\u80fd\u5bfc\u81f4\u66f4\u4e25\u91cd\u7684\u53d1\u52a8\u673a\u964d\u7ea7\u3002<\/p>\n<h3 id=\"what-are-the-common-causes-of-spn-4094-\">SPN 4094\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>SPN 4094\u7684\u6700\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>DEF\u6db2\u4f53\u53d8\u8d28\u6216\u6c61\u67d3<\/li>\n<li>DEF\u55b7\u5c04\u5668\u6545\u969c\u6216\u55b7\u5c04\u95ee\u9898<\/li>\n<li>SCR\u50ac\u5316\u5242\u5835\u585e\u6216\u635f\u574f<\/li>\n<li>NOx\u4f20\u611f\u5668\u6545\u969c<\/li>\n<li>SCR\u7cfb\u7edf\u524d\u7684\u6392\u6c14\u6cc4\u6f0f<\/li>\n<li>DEF\u6db2\u4f4d\u4f4e<\/li>\n<li>DEF\u4f9b\u5e94\u7cfb\u7edf\u95ee\u9898\uff08\u6cf5\u3001\u7ba1\u8def\u3001\u6ee4\u7f51\u7b49\uff09<\/li>\n<\/ol>\n<h3 id=\"is-spn-4094-specific-to-certain-engine-makes-\">SPN 4094\u662f\u5426\u7279\u5b9a\u4e8e\u67d0\u4e9b\u53d1\u52a8\u673a\u54c1\u724c\uff1f<\/h3>\n<p>SPN 4094\u88ab\u8ba4\u4e3a\u662f\u6240\u6709\u914d\u5907J1939\u901a\u4fe1\u534f\u8bae\u7684\u91cd\u578b\u8f66\u8f86\u4e2d\u7684\u901a\u7528\u4ee3\u7801\u3002\u7136\u800c\uff0c\u4e0d\u540c\u53d1\u52a8\u673a\u5236\u9020\u5546\u4e4b\u95f4\u7684NOx\u9650\u503c\u548c\u964d\u7ea7\u6761\u4ef6\u53ef\u80fd\u7565\u6709\u4e0d\u540c\u3002<\/p>\n<h3 id=\"what-parts-are-involved-with-spn-4094-\">SPN 4094\u6d89\u53ca\u54ea\u4e9b\u90e8\u4ef6\uff1f<\/h3>\n<p>SPN 4094\u7684\u4e3b\u8981\u76f8\u5173\u90e8\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>SCR\u50ac\u5316\u5242<\/li>\n<li>DEF\u55b7\u5c04\u5668<\/li>\n<li>NOx\u4f20\u611f\u5668<\/li>\n<li>DEF\u6cb9\u7bb1\u548c\u4f9b\u5e94\u7cfb\u7edf<\/li>\n<\/ul>\n<h3 id=\"how-do-you-diagnose-the-root-cause-of-spn-4094-\">\u5982\u4f55\u8bca\u65adSPN 4094\u7684\u6839\u672c\u539f\u56e0\uff1f<\/h3>\n<p>\u8981\u6b63\u786e\u8bca\u65adSPN 4094\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u626b\u63cf\u6240\u6709\u6d3b\u52a8\u6545\u969c\u4ee3\u7801\u5e76\u8bb0\u5f55\u4efb\u4f55\u5176\u4ed6\u4ee3\u7801<\/li>\n<li>\u68c0\u67e5DEF\u6db2\u4f4d\u548c\u8d28\u91cf<\/li>\n<li>\u4f7f\u7528\u6298\u5c04\u4eea\u8fdb\u884cDEF\u8d28\u91cf\u6d4b\u8bd5<\/li>\n<li>\u68c0\u67e5DEF\u55b7\u5c04\u5668\u7684\u55b7\u96fe\u56fe\u6848\u548c\u6d41\u91cf<\/li>\n<li>\u8fdb\u884cNOx\u4f20\u611f\u5668\u8bc4\u4f30<\/li>\n<li>\u68c0\u67e5SCR\u7cfb\u7edf\u524d\u7684\u6392\u6c14\u6cc4\u6f0f<\/li>\n<li>\u8bc4\u4f30SCR\u50ac\u5316\u5242\u7684\u635f\u574f\u6216\u5835\u585e\u8ff9\u8c61<\/li>\n<li>\u786e\u8ba4DEF\u6cf5\u548c\u4f9b\u7ed9\u7ba1\u8def\u7684\u6b63\u5e38\u529f\u80fd<\/li>\n<\/ol>\n<h3 id=\"what-tools-are-needed-to-diagnose-spn-4094-\">\u8bca\u65adSPN 4094\u9700\u8981\u54ea\u4e9b\u5de5\u5177\uff1f<\/h3>\n<p>\u8bca\u65adSPN 4094\u6240\u9700\u7684\u4e3b\u8981\u5de5\u5177\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5177\u5907J1939\u534f\u8bae\u7684\u8bca\u65ad\u626b\u63cf\u5de5\u5177<\/li>\n<li>DEF\u6298\u5c04\u4eea<\/li>\n<li>\u4e07\u7528\u8868<\/li>\n<li>\u6392\u6c14\u80cc\u538b\u8868<\/li>\n<\/ul>\n<h3 id=\"how-do-you-fix-issues-that-cause-spn-4094-\">\u5982\u4f55\u4fee\u590d\u5bfc\u81f4SPN 4094\u7684\u6545\u969c\uff1f<\/h3>\n<p>\u5728\u627e\u5230\u6839\u672c\u539f\u56e0\u540e\uff0c\u6839\u636e\u9700\u8981\u6267\u884c\u76f8\u5e94\u7ef4\u4fee\uff1a<\/p>\n<ul>\n<li>\u66f4\u6362\u53d7\u6c61\u67d3\u6216\u8fc7\u671f\u7684DEF\u6db2\u4f53<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u5835\u585e\u7684DEF\u55b7\u5c04\u5668<\/li>\n<li>\u4fee\u590d\u4efb\u4f55\u6392\u6c14\u6cc4\u6f0f<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684NOx\u4f20\u611f\u5668<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u5835\u585e\u7684SCR\u50ac\u5316\u5242<\/li>\n<li>\u4fee\u590dDEF\u4f9b\u5e94\u7cfb\u7edf\u95ee\u9898\uff08\u6cf5\u3001\u7ba1\u8def\u3001\u6ee4\u7f51\u7b49\uff09<\/li>\n<\/ul>\n<h3 id=\"can-spn-4094-repairs-be-done-by-a-mechanic-or-is-a-dealer-required-\">SPN 4094\u7684\u7ef4\u4fee\u53ef\u4ee5\u7531\u6280\u5e08\u5b8c\u6210\uff0c\u8fd8\u662f\u9700\u8981\u7ecf\u9500\u5546\u4ecb\u5165\uff1f<\/h3>\n<p>\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u7ef4\u4fee\u53ef\u4ee5\u7531\u719f\u7ec3\u7684\u6280\u5e08\u5b8c\u6210\u3002\u7136\u800c\uff0c\u59cb\u7ec8\u5e94\u53c2\u8003\u5236\u9020\u5546\u7684\u670d\u52a1\u4fe1\u606f\uff0c\u4ee5\u786e\u4fdd\u7279\u5b9a\u7684\u64cd\u4f5c\u6b65\u9aa4\u548c\u626d\u77e9\u89c4\u8303\u3002\u66f4\u6362\u4e3b\u8981\u90e8\u4ef6\u5982SCR\u50ac\u5316\u5242\u6216DEF\u55b7\u5c04\u5668\u53ef\u80fd\u9700\u8981\u4e13\u4e1a\u5de5\u5177\uff0c\u5efa\u8bae\u7531\u6388\u6743\u7ef4\u4fee\u4e2d\u5fc3\u6280\u5e08\u5b8c\u6210\u3002<\/p>\n<h3 id=\"how-much-does-it-cost-to-repair-spn-4094-issues-\">\u4fee\u590dSPN 4094\u95ee\u9898\u7684\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590d\u5bfc\u81f4SPN 4094\u7684\u6545\u969c\u7684\u6210\u672c\u56e0\u6839\u672c\u539f\u56e0\u548c\u7279\u5b9a\u8f66\u8f86\u800c\u5f02\u3002\u5e38\u89c1\u7684\u8d39\u7528\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>DEF\u6db2\u4f53\uff1a$5-7\/\u52a0\u4ed1\uff08$1.32-1.85\/\u5347\uff09<\/li>\n<li>DEF\u55b7\u5c04\u5668\uff1a$500-800\uff08\u20ac460-740\uff09<\/li>\n<li>NOx\u4f20\u611f\u5668\uff1a\u6bcf\u4e2a$300-600\uff08\u20ac280-550\uff09<\/li>\n<li>SCR\u50ac\u5316\u5242\uff1a$1500-3000\uff08\u20ac1400-2800\uff09<\/li>\n<li>DEF\u6cf5\uff1a$600-1200\uff08\u20ac550-1100\uff09<\/li>\n<\/ul>\n<p>\u4eba\u5de5\u8d39\u7528\u901a\u5e38\u5728$100-175\/\u5c0f\u65f6\uff08\u20ac90-160\uff09\uff0c\u5927\u591a\u6570\u7ef4\u4fee\u9700\u65f62-8\u5c0f\u65f6\u3002<\/p>\n<h3 id=\"how-can-you-prevent-spn-4094-from-occurring-\">\u5982\u4f55\u9884\u9632SPN 4094\uff1f<\/h3>\n<p>\u4e3a\u4e86\u9632\u6b62SPN 4094\u51fa\u73b0\uff1a<\/p>\n<ul>\n<li>\u4ec5\u4f7f\u7528\u6765\u81ea\u4fe1\u8a89\u826f\u597d\u7684\u4f9b\u5e94\u5546\u7684\u4f18\u8d28DEF\u6db2\u4f53<\/li>\n<li>\u4fdd\u6301DEF\u6db2\u4f4d\u5728\u9002\u5f53\u6c34\u5e73<\/li>\n<li>\u9075\u5b88\u5236\u9020\u5546\u5bf9\u540e\u5904\u7406\u7cfb\u7edf\u7684\u63a8\u8350\u7ef4\u62a4\u95f4\u9694<\/li>\n<li>\u53ca\u65f6\u89e3\u51b3\u4efb\u4f55\u6db2\u4f53\u6cc4\u6f0f\u6216\u53d1\u52a8\u673a\u95ee\u9898<\/li>\n<li>\u907f\u514d\u8fc7\u5ea6\u6020\u901f\uff0c\u4ee5\u9632\u6b62SCR\u7cfb\u7edf\u4e2d\u79ef\u70ad<\/li>\n<\/ul>\n<h3 id=\"what-other-fault-codes-commonly-appear-with-spn-4094-\">\u54ea\u4e9b\u5176\u4ed6\u6545\u969c\u4ee3\u7801\u901a\u5e38\u4e0eSPN 4094\u4e00\u8d77\u51fa\u73b0\uff1f<\/h3>\n<p>\u4e0eSPN 4094\u4e00\u8d77\u9891\u7e41\u51fa\u73b0\u7684\u5176\u4ed6\u4ee3\u7801\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-3031-aftertreatment-1-outlet-nox-sensor-heater-issues\/\" title=\"SPN 3031 - \u540e\u5904\u74061\u51fa\u53e3NOx\u4f20\u611f\u5668\">SPN 3031 &#8211; \u540e\u5904\u74061\u51fa\u53e3NOx\u4f20\u611f\u5668<\/a><\/li>\n<li>SPN 4021 &#8211; \u540e\u5904\u74061\u51fa\u53e3\u6c14\u4f53\u4f20\u611f\u5668\u7535\u6e90\u72b6\u6001<\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-5394-def-dosing-valve\/\" title=\"SPN 5394 - \u540e\u5904\u74061 DEF\u55b7\u5c04\u9600\">SPN 5394 &#8211; \u540e\u5904\u74061 DEF\u55b7\u5c04\u9600<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-5435-aftertreatment-1-diesel-exhaust-fluid-pump-state\/\" title=\"SPN 5435 - \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u8d28\u91cf\">SPN 5435 &#8211; \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u8d28\u91cf<\/a><\/li>\n<li>SPN 5484 &#8211; \u540e\u5904\u74061 DEF\u6cb9\u7bb1\u6db2\u4f4d<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u4ee3\u7801\u901a\u5e38\u8868\u660eDEF\u7cfb\u7edf\u3001NOx\u4f20\u611f\u5668\u6216SCR\u50ac\u5316\u5242\u5b58\u5728\u95ee\u9898\uff0c\u5bfc\u81f4SPN 4094\u6240\u6307\u7684\u9ad8NOx\u6c34\u5e73\u3002<\/p>\n<h3 id=\"can-a-bad-turbocharger-cause-spn-4094-\">\u574f\u7684\u6da1\u8f6e\u589e\u538b\u5668\u4f1a\u5bfc\u81f4SPN 4094\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u6545\u969c\u7684\u6da1\u8f6e\u589e\u538b\u5668\u6216VGTA\uff08\u53ef\u53d8\u51e0\u4f55\u6da1\u8f6e\u589e\u538b\u5668\u6267\u884c\u5668\uff09\u53ef\u80fd\u5bfc\u81f4SPN 4094\u3002\u5982\u679c\u6da1\u8f6e\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u53ef\u80fd\u5bfc\u81f4\u71c3\u70e7\u4e0d\u5b8c\u5168\u5e76\u4ea7\u751f\u66f4\u9ad8\u7684NOx\u3002\u8fd9\u5c06\u4f7f\u6267\u884cDPF\u518d\u751f\u53d8\u5f97\u56f0\u96be\u6216\u4e0d\u53ef\u80fd\u3002<\/p>\n<h3 id=\"can-cold-weather-trigger-spn-4094-\">\u5bd2\u51b7\u5929\u6c14\u4f1a\u89e6\u53d1SPN 4094\u5417\uff1f<\/h3>\n<p>\u5982\u679c\u540e\u5904\u7406\u7cfb\u7edf\u5b58\u5728\u6f5c\u5728\u95ee\u9898<\/p>\n<p>\uff0c\u5bd2\u51b7\u7684\u6e29\u5ea6\u6709\u65f6\u4f1a\u5bfc\u81f4SPN 4094\u51fa\u73b0\u3002\u6781\u4f4e\u7684\u6e29\u5ea6\u53ef\u80fd\u5bfc\u81f4DEF\u5728\u7ba1\u8def\u4e2d\u7ed3\u51b0\u6216\u5728\u55b7\u5c04\u5668\u4e2d\u7ed3\u6676\uff0c\u5bfc\u81f4DEF\u55b7\u5c04\u4e0d\u8db3\u548cNOx\u6c34\u5e73\u5347\u9ad8\u3002<\/p>\n<h3 id=\"what-does-fmi-18-mean-on-spn-4094-\">SPN 4094\u4e2d\u7684FMI 18\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>SPN 4094\u4e2d\u7684FMI\uff08\u6545\u969c\u6a21\u5f0f\u6307\u793a\u5668\uff0918\u8868\u793a\u6570\u636e\u6709\u6548\u4f46\u4f4e\u4e8e\u6b63\u5e38\u64cd\u4f5c\u8303\u56f4\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8868\u793aNOx\u6c34\u5e73\u9ad8\u4e8eECM\u8bbe\u5b9a\u7684\u53ef\u63a5\u53d7\u9608\u503c\u3002<\/p>\n<h3 id=\"will-a-dpf-delete-or-scr-delete-fix-spn-4094-\">DPF\u5220\u9664\u6216SCR\u5220\u9664\u4f1a\u89e3\u51b3SPN 4094\u5417\uff1f<\/h3>\n<p>\u867d\u7136DPF\u6216SCR\u5220\u9664\u53ef\u80fd\u6682\u65f6\u6d88\u9664SPN 4094\uff0c\u4f46\u5728\u5927\u591a\u6570\u5730\u533a\u662f\u8fdd\u6cd5\u7684\uff0c\u53ef\u80fd\u5bfc\u81f4\u5de8\u989d\u7f5a\u6b3e\u548c\u5904\u7f5a\u3002\u5220\u9664\u6392\u653e\u63a7\u5236\u8bbe\u5907\u8fd8\u4f1a\u589e\u52a0\u6709\u5bb3\u6c61\u67d3\u7269\uff0c\u5e76\u53ef\u80fd\u5bfc\u81f4\u53d1\u52a8\u673a\u957f\u671f\u635f\u574f\u3002\u5efa\u8bae\u59cb\u7ec8\u8bca\u65ad\u548c\u4fee\u590dSPN 4094\u7684\u6839\u672c\u539f\u56e0\uff0c\u800c\u4e0d\u662f\u5220\u9664\u7ec4\u4ef6\u3002<\/p>\n<h3 id=\"can-bad-def-fluid-quality-cause-spn-4094-\">\u5dee\u7684DEF\u6db2\u4f53\u8d28\u91cf\u4f1a\u5bfc\u81f4SPN 4094\u5417\uff1f<\/h3>\n<p>\u5f53\u7136\u4f1a\uff0c\u4f7f\u7528\u6c61\u67d3\u3001\u8fc7\u671f\u6216\u7a00\u91ca\u7684DEF\u6db2\u4f53\u662fSPN 4094\u6700\u5e38\u89c1\u7684\u539f\u56e0\u4e4b\u4e00\u3002ECM\u901a\u8fc7NOx\u4f20\u611f\u5668\u76d1\u6d4b\u6db2\u4f53\u8d28\u91cf\uff0c\u5982\u679c\u8f6c\u6362\u6548\u7387\u56e0DEF\u8d28\u91cf\u4e0d\u4f73\u800c\u4e0b\u964d\uff0c\u5c06\u89e6\u53d1\u4ee3\u7801\u3002\u59cb\u7ec8\u4f7f\u7528API\u8ba4\u8bc1\u7684DEF\u6db2\u4f53\uff0c\u9009\u62e9\u53ef\u4fe1\u8d56\u7684\u4f9b\u5e94\u5546\uff0c\u5e76\u9075\u5faa\u6b63\u786e\u7684\u5b58\u50a8\u548c\u5904\u7406\u89c4\u8303\u3002<\/p>\n<h3 id=\"can-a-cracked-or-leaking-def-injector-cause-spn-4094-\">\u7834\u88c2\u6216\u6cc4\u6f0f\u7684DEF\u55b7\u5c04\u5668\u4f1a\u5bfc\u81f4SPN 4094\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u7834\u88c2\u7684DEF\u55b7\u5c04\u5668\u53ef\u80fd\u5bfc\u81f4SPN 4094\uff0c\u56e0\u5176\u5141\u8bb8\u5e9f\u6c14\u6cc4\u6f0f\u8fdb\u5165DEF\u7cfb\u7edf\u3002\u8fd9\u6837\u4f1a\u6c61\u67d3\u6db2\u4f53\u5e76\u5bfc\u81f4\u55b7\u5c04\u5668\u5835\u585e\u7684\u7ed3\u6676\u3002\u7834\u88c2\u7684\u55b7\u5c04\u5668\u8fd8\u4f1a\u5728\u672a\u547d\u4ee4\u65f6\u6ef4\u5165\u6392\u6c14\u6d41\u4e2d\uff0c\u5bfc\u81f4\u6c28\u5473\u548c\u4e0d\u51c6\u786e\u7684\u55b7\u5c04\u91cf\u3002<\/p>\n<h3 id=\"will-spn-4094-clear-itself-once-the-repair-is-made-\">\u4fee\u590d\u5b8c\u6210\u540eSPN 4094\u4f1a\u81ea\u52a8\u6e05\u9664\u5417\uff1f<\/h3>\n<p>\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cSPN 4094\u5728\u7ef4\u4fee\u5b8c\u6210\u540e\u4e0d\u4f1a\u81ea\u52a8\u6e05\u9664\u3002\u4ee3\u7801\u9700\u8981\u4f7f\u7528\u8bca\u65ad\u626b\u63cf\u5de5\u5177\u624b\u52a8\u6e05\u9664\u3002\u6b64\u5916\uff0c\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u4e00\u6b21\u6216\u591a\u6b21\u5f3a\u5236DPF\u518d\u751f\uff0c\u4ee5\u6062\u590d\u540e\u5904\u7406\u529f\u80fd\u548c\u6548\u7387\uff0c\u4ece\u800c\u786e\u4fdd\u4ee3\u7801\u4e0d\u4f1a\u518d\u51fa\u73b0\u3002<\/p>\n<p>\u89e3\u51b3SPN 4094\u7684\u5173\u952e\u662f\u5168\u9762\u7684\u8bca\u65ad\uff0c\u627e\u51fa\u6240\u6709\u7684\u6839\u672c\u539f\u56e0\uff0c\u5e76\u8fdb\u884c\u5fc5\u8981\u7684\u7ef4\u4fee\u3002\u5ffd\u89c6\u95ee\u9898\u6216\u91c7\u53d6\u5feb\u901f\u4fee\u590d\u901a\u5e38\u4f1a\u5bfc\u81f4\u6545\u969c\u53cd\u590d\u51fa\u73b0\u3002\u5982\u6709\u7591\u95ee\uff0c\u8bf7\u53c2\u8003\u5236\u9020\u5546\u7684\u670d\u52a1\u4fe1\u606f\u6216\u8054\u7cfb\u6388\u6743\u6280\u5e08\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u6545\u969c\u4ee3\u7801SPN 4094\u662f\u4e00\u79cd\u901a\u7528\u8bca\u65ad\u6545\u969c\u4ee3\u7801 (DTC)\uff0c\u8868\u660e\u6392\u6c14\u7cfb\u7edf\u4e2d\u7684NOx\uff08\u6c2e\u6c27\u5316\u7269\uff09\u9650\u503c\u5df2\u8d85\u6807<\/p>\n","protected":false},"author":13,"featured_media":288177,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-288174","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\/288174","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=288174"}],"version-history":[{"count":4,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/288174\/revisions"}],"predecessor-version":[{"id":288320,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/288174\/revisions\/288320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media\/288177"}],"wp:attachment":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media?parent=288174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/categories?post=288174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/tags?post=288174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}