{"id":287688,"date":"2024-10-23T08:22:28","date_gmt":"2024-10-23T08:22:28","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287688"},"modified":"2024-11-04T11:44:39","modified_gmt":"2024-11-04T11:44:39","slug":"p20e9-scr-nox-catalyst-conversion-efficiency-warning","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20e9-scr-nox-catalyst-conversion-efficiency-warning\/","title":{"rendered":"P20E9 &#8211; SCR NOx \u50ac\u5316\u5242\u8f6c\u6362\u6548\u7387\u8b66\u544a"},"content":{"rendered":"<h2 id=\"p20e9-scr-nox-catalyst-conversion-efficiency-warning\">P20E9: SCR NOx Catalyst Conversion Efficiency Warning<\/h2>\n<p>OBD-II Diagnostic Trouble Code P20E9: Reductant Pressure Too High<\/p>\n<p>The P20E9 diagnostic trouble code (DTC) indicates that the reductant pressure in the vehicle&#8217;s Selective Catalytic Reduction (SCR) system is higher than the manufacturer&#8217;s specified range. This code is primarily associated with diesel engines equipped with SCR technology for reducing nitrogen oxide (NOx) emissions.<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6211\u4eec\u7ecf\u5e38\u770b\u5230 P20E9 \u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u6b27\u6d32\u67f4\u6cb9\u8f66\u8f86\u4e2d\u3002\u5b83\u7279\u522b\u5e38\u89c1\u4e8e\u914d\u5907 SCR \u7cfb\u7edf\u7684\u5927\u4f17\u3001\u5b9d\u9a6c\u548c\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u8f66\u578b\u4e2d\u3002\u6211\u4eec\u6ce8\u610f\u5230\uff0c\u8be5\u4ee3\u7801\u901a\u5e38\u5728\u6781\u51b7\u5929\u6c14\u540e\u6216\u4f7f\u7528\u4f4e\u8d28\u91cf DEF \u540e\u51fa\u73b0\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u8fc7\u5f7b\u5e95\u6e05\u6d01 DEF \u7cfb\u7edf\u3001\u66f4\u6362\u5835\u585e\u7684\u55b7\u6cb9\u5668\u6216\u66f4\u65b0 ECU \u8f6f\u4ef6\u89e3\u51b3\u4e86\u95ee\u9898\u3002\u5076\u5c14\u6211\u4eec\u4e0d\u5f97\u4e0d\u66f4\u6362 DEF \u6cf5\u6216\u538b\u529b\u4f20\u611f\u5668\u3002\u6709\u8da3\u7684\u662f\uff0c\u6211\u4eec\u53d1\u73b0\u67d0\u4e9b\u8f66\u8f86\uff0c\u7279\u522b\u662f\u67d0\u4e9b\u5b9d\u9a6c\u8f66\u578b\uff0c\u7531\u4e8e SCR \u7cfb\u7edf\u8f83\u4e3a\u654f\u611f\uff0c\u66f4\u5bb9\u6613\u51fa\u73b0\u6b64\u4ee3\u7801\u3002<\/p>\n<\/div>\n<h2 id=\"urgency-and-driving-implications\">\u7d27\u6025\u6027\u548c\u9a7e\u9a76\u5f71\u54cd<\/h2>\n<p>P20E9 \u4ee3\u7801\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u4e2d\u7b49\u4e25\u91cd\u6027\u95ee\u9898\u3002\u867d\u7136\u5b83\u53ef\u80fd\u4e0d\u4f1a\u7acb\u5373\u5bfc\u81f4\u53d1\u52a8\u673a\u635f\u574f\uff0c\u4f46\u5982\u679c\u4e0d\u53ca\u65f6\u5904\u7406\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u548c\u6392\u653e\u589e\u52a0\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u77ed\u65f6\u95f4\u5185\u7ee7\u7eed\u9a7e\u9a76\u662f\u5b89\u5168\u7684\uff0c\u4f46\u957f\u65f6\u95f4\u8fd0\u884c\u53ef\u80fd\u5bfc\u81f4\uff1a<\/p>\n<ol>\n<li>\u71c3\u6cb9\u6548\u7387\u4e0b\u964d<\/li>\n<li>\u9a7e\u9a76\u6027\u95ee\u9898\uff0c\u5982\u6020\u901f\u4e0d\u7a33\u6216\u52a0\u901f\u65f6\u72b9\u8c6b<\/li>\n<li>SCR \u7cfb\u7edf\u7ec4\u4ef6\u7684\u78e8\u635f\u589e\u52a0<\/li>\n<li>\u8fdd\u53cd\u6392\u653e\u89c4\u5b9a\u7684\u98ce\u9669<\/li>\n<\/ol>\n<p>\u5efa\u8bae\u5c3d\u5feb\u7531\u5408\u683c\u6280\u5e08\u68c0\u67e5\u8f66\u8f86\uff0c\u4ee5\u9632\u6b62 SCR \u7cfb\u7edf\u53d7\u635f\u5e76\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6807\u51c6\u3002<\/p>\n<h2 id=\"code-specifics\">\u4ee3\u7801\u8be6\u60c5<\/h2>\n<p>P20E9 \u662f\u4e00\u4e2a\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u9002\u7528\u4e8e\u914d\u5907 OBD-II \u7cfb\u7edf\u7684\u5404\u79cd\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u3002\u7136\u800c\uff0c\u5177\u4f53\u7684\u8bca\u65ad\u548c\u7ef4\u4fee\u7a0b\u5e8f\u53ef\u80fd\u56e0\u5236\u9020\u5546\u800c\u5f02\u3002<\/p>\n<p>\u8be5\u4ee3\u7801\u8868\u660e\u53d1\u52a8\u673a\u63a7\u5236\u6a21\u5757 (ECM) \u68c0\u6d4b\u5230\u8fd8\u539f\u5242\u538b\u529b\u8d85\u8fc7\u5236\u9020\u5546\u8bbe\u5b9a\u7684\u6700\u5927\u9608\u503c\u3002\u5f53\u7cfb\u7edf\u4e3a\u5c06\u67f4\u6cb9\u6392\u6c14\u6db2 (DEF) \u6ce8\u5165\u6392\u6c14\u6d41\u505a\u51c6\u5907\u65f6\uff0c\u4f1a\u76d1\u63a7\u6b64\u538b\u529b\u3002<\/p>\n<h2 id=\"components-involved\">\u6d89\u53ca\u7684\u7ec4\u4ef6<\/h2>\n<p>\u4e0e P20E9 \u4ee3\u7801\u76f8\u5173\u7684\u4e3b\u8981\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>SCR \u7cfb\u7edf\uff1a\u901a\u8fc7\u5411\u6392\u6c14\u6d41\u6ce8\u5165 DEF \u6765\u51cf\u5c11 NOx \u6392\u653e<\/li>\n<li>DEF \u6cf5\uff1a\u52a0\u538b\u5e76\u5c06 DEF \u8f93\u9001\u5230\u55b7\u6cb9\u5668<\/li>\n<li>DEF \u55b7\u6cb9\u5668\uff1a\u5c06 DEF \u55b7\u5165\u6392\u6c14\u6d41<\/li>\n<li>\u8fd8\u539f\u5242\u538b\u529b\u4f20\u611f\u5668\uff1a\u76d1\u63a7 DEF \u7cfb\u7edf\u4e2d\u7684\u538b\u529b<\/li>\n<li>\u8fd8\u539f\u5242\u538b\u529b\u7ba1\u8def\uff1a\u5c06\u52a0\u538b DEF \u4ece\u6cf5\u8f93\u9001\u5230\u55b7\u6cb9\u5668<\/li>\n<li>ECM\uff1a\u76d1\u63a7\u5e76\u63a7\u5236 SCR \u7cfb\u7edf<\/li>\n<\/ol>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>P20E9 \u4ee3\u7801\u51fa\u73b0\u7684\u6700\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>DEF \u6cf5\u6545\u969c<\/li>\n<li>\u8fd8\u539f\u5242\u538b\u529b\u4f20\u611f\u5668\u6545\u969c<\/li>\n<li>DEF \u7ba1\u7ebf\u5835\u585e\u6216\u53d7\u9650<\/li>\n<li>DEF \u55b7\u6cb9\u5668\u6545\u969c<\/li>\n<li>\u53d7\u6c61\u67d3\u6216\u4f4e\u8d28\u91cf\u7684 DEF<\/li>\n<li>SCR \u7cfb\u7edf\u4e2d\u7684\u63a5\u7ebf\u95ee\u9898<\/li>\n<li>ECM \u4e2d\u7684\u8f6f\u4ef6\u6545\u969c<\/li>\n<\/ol>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<p>\u8981\u8bca\u65ad P20E9 \u4ee3\u7801\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u8fde\u63a5 OBD-II \u626b\u63cf\u4eea\uff0c\u68c0\u7d22\u6240\u6709\u5b58\u50a8\u7684\u4ee3\u7801\u548c\u51bb\u7ed3\u5e27\u6570\u636e<\/li>\n<li>\u68c0\u67e5 DEF \u7cfb\u7edf\u662f\u5426\u6709\u660e\u663e\u7684\u6cc4\u6f0f\u3001\u635f\u574f\u6216\u6c61\u67d3<\/li>\n<li>\u68c0\u67e5 DEF \u6db2\u4f4d\u548c\u8d28\u91cf<\/li>\n<li>\u4f7f\u7528\u4e07\u7528\u8868\u6d4b\u8bd5\u8fd8\u539f\u5242\u538b\u529b\u4f20\u611f\u5668\u7684\u7535\u538b\u8f93\u51fa<\/li>\n<li>\u68c0\u67e5 SCR \u7cfb\u7edf\u4e2d\u7684\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\u662f\u5426\u6709\u635f\u574f\u6216\u8150\u8680<\/li>\n<li>\u4f7f\u7528\u626b\u63cf\u5de5\u5177\u5b9e\u65f6\u76d1\u63a7\u8fd8\u539f\u5242\u538b\u529b\u8bfb\u6570<\/li>\n<li>\u4f7f\u7528\u538b\u529b\u8868\u624b\u52a8\u6d4b\u8bd5\u8fd8\u539f\u5242\u538b\u529b<\/li>\n<li>\u68c0\u67e5\u4e0e SCR \u7cfb\u7edf\u76f8\u5173\u7684\u8f6f\u4ef6\u66f4\u65b0\u6216\u6280\u672f\u670d\u52a1\u516c\u544a (TSB)<\/li>\n<\/ol>\n<h2 id=\"solutions\">\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>P20E9 \u4ee3\u7801\u7684\u6f5c\u5728\u89e3\u51b3\u65b9\u6848\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u66f4\u6362\u6545\u969c\u7684 DEF \u6cf5<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u538b\u529b\u4f20\u611f\u5668<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u5835\u585e\u7684 DEF \u7ba1\u7ebf<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684 DEF \u55b7\u6cb9\u5668<\/li>\n<li>\u6392\u7a7a\u5e76\u91cd\u65b0\u6ce8\u5165\u9ad8\u8d28\u91cf\u7684 DEF<\/li>\n<li>\u4fee\u590d\u6216\u66f4\u6362 SCR \u7cfb\u7edf\u4e2d\u635f\u574f\u7684\u63a5\u7ebf<\/li>\n<li>\u5982\u679c\u6709\u53ef\u7528\u7684\uff0c\u66f4\u65b0 ECM \u8f6f\u4ef6<\/li>\n<\/ol>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<p>\u4e3a\u9632\u6b62 P20E9 \u4ee3\u7801\u7684\u518d\u6b21\u51fa\u73b0\uff1a<\/p>\n<ol>\n<li>\u4ec5\u4f7f\u7528\u7b26\u5408 ISO 22241 \u6807\u51c6\u7684\u9ad8\u8d28\u91cf DEF<\/li>\n<li>\u5b9a\u671f\u68c0\u67e5 SCR \u7cfb\u7edf\u662f\u5426\u6709\u6cc4\u6f0f\u6216\u635f\u574f<\/li>\n<li>\u9075\u5faa\u5236\u9020\u5546\u63a8\u8350\u7684 DEF \u7cfb\u7edf\u7ef4\u62a4\u8ba1\u5212<\/li>\n<li>\u907f\u514d DEF \u66b4\u9732\u5728\u6781\u7aef\u6e29\u5ea6\u6216\u6c61\u67d3\u4e2d<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u4efb\u4f55\u4e0e SCR \u76f8\u5173\u7684\u8b66\u544a\u706f\u6216\u6d88\u606f<\/li>\n<\/ol>\n<h2 id=\"repair-costs\">\u7ef4\u4fee\u8d39\u7528<\/h2>\n<p>\u7ef4\u4fee\u8d39\u7528\u56e0\u6839\u672c\u539f\u56e0\u548c\u8f66\u8f86\u54c1\u724c\u578b\u53f7\u800c\u5f02\u3002\u5e38\u89c1\u7ef4\u4fee\u7684\u4f30\u8ba1\u8d39\u7528\uff1a<\/p>\n<ul>\n<li>DEF \u6cf5\u66f4\u6362\uff1a300-800\u7f8e\u5143\uff08\u20ac250-\u20ac670\uff09<\/li>\n<li>\u8fd8\u539f\u5242\u538b\u529b\u4f20\u611f\u5668\u66f4\u6362\uff1a150-400\u7f8e\u5143\uff08\u20ac125-\u20ac335\uff09<\/li>\n<li>DEF \u55b7\u6cb9\u5668\u66f4\u6362\uff1a200-600\u7f8e\u5143\uff08\u20ac170-\u20ac500\uff09<\/li>\n<li>DEF \u7cfb\u7edf\u6e05\u6d01\u548c\u6db2\u4f53\u66f4\u6362\uff1a100-300\u7f8e\u5143\uff08\u20ac85-\u20ac250\uff09<\/li>\n<\/ul>\n<p>\u4eba\u5de5\u8d39\u901a\u5e38\u5728\u6bcf\u5c0f\u65f6 100 \u81f3 200 \u7f8e\u5143\uff08\u20ac85-\u20ac170\uff09\u4e4b\u95f4\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u5730\u533a\u548c\u8f66\u95f4\u8d39\u7387\u3002<\/p>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<p>\u4e0e P20E9 \u4ee3\u7801\u540c\u65f6\u51fa\u73b0\u7684\u5176\u4ed6\u95ee\u9898\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u53d1\u52a8\u673a\u529f\u7387\u964d\u4f4e\u6216\u8fdb\u5165\u762b\u75ea\u6a21\u5f0f<\/li>\n<li>\u53d1\u52a8\u673a\u6545\u969c\u706f\u6216 SCR \u7cfb\u7edf\u8b66\u544a\u706f\u4eae\u8d77<\/li>\n<li>\u4e0e NOx \u4f20\u611f\u5668\u76f8\u5173\u7684\u4ee3\u7801\uff08\u4f8b\u5982 P20EE\u3001<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20e8-scr-nox-catalyst-efficiency-below-threshold\/\" title=\"P20E8\">P20E8<\/a>\uff09<\/li>\n<li>\u4e0e DEF \u8d28\u91cf\u6216\u6db2\u4f4d\u76f8\u5173\u7684\u4ee3\u7801\uff08\u4f8b\u5982 P20E4\u3001P20E5\uff09<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u53ca\u65f6\u5904\u7406 P20E9 \u4ee3\u7801\u5e76\u59a5\u5584\u7ef4\u62a4 SCR \u7cfb\u7edf\uff0c\u8f66\u4e3b\u53ef\u4ee5\u786e\u4fdd\u8f66\u8f86\u7684\u6700\u4f73\u6027\u80fd\u3001\u71c3\u6cb9\u6548\u7387\u548c\u7b26\u5408\u6392\u653e\u89c4\u5b9a\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-p20e9\">\u5173\u4e8e P20E9 \u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>P20E9 \u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>P20E9 \u4ee3\u7801\u8868\u660e\u8f66\u8f86\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u4e2d\u7684\u8fd8\u539f\u5242\u538b\u529b\u9ad8\u4e8e\u5236\u9020\u5546\u89c4\u5b9a\u7684\u8303\u56f4\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u6709\u591a\u7d27\u6025\uff1f<\/h3>\n<p>\u867d\u7136\u5b83\u4e0d\u662f\u7acb\u5373\u7684\u7d27\u6025\u95ee\u9898\uff0c\u4f46\u5efa\u8bae\u5c3d\u5feb\u68c0\u67e5\u4ee5\u9632\u6b62 SCR \u7cfb\u7edf\u53d7\u635f\u5e76\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6807\u51c6\u3002<\/p>\n<h3>\u5e26\u6709 P20E9 \u4ee3\u7801\u7684\u8f66\u8f86\u8fd8\u80fd\u7ee7\u7eed\u9a7e\u9a76\u5417\uff1f<\/h3>\n<p>\u53ef\u4ee5\u77ed\u65f6\u95f4\u9a7e\u9a76\uff0c\u4f46\u957f\u65f6\u95f4\u8fd0\u884c\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u548c\u6392\u653e\u589e\u52a0\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u6d89\u53ca\u54ea\u4e9b\u7ec4\u4ef6\uff1f<\/h3>\n<p>\u4e3b\u8981\u7ec4\u4ef6\u5305\u62ec SCR \u7cfb\u7edf\u3001DEF \u6cf5\u3001\u55b7\u6cb9\u5668\u3001\u538b\u529b\u4f20\u611f\u5668\u53ca\u76f8\u5173\u63a5\u7ebf\u3002<\/p>\n<h3>P20E9 \u662f\u901a\u7528\u4ee3\u7801\u8fd8\u662f\u7279\u5b9a\u4e8e\u67d0\u4e9b\u5236\u9020\u5546\uff1f<\/h3>\n<p>P20E9 \u662f\u4e00\u4e2a\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u9002\u7528\u4e8e\u914d\u5907 OBD-II \u7cfb\u7edf\u7684\u5404\u79cd\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u539f\u56e0\u5305\u62ec DEF \u6cf5\u6545\u969c\u3001\u538b\u529b\u4f20\u611f\u5668\u6545\u969c\u3001DEF \u7ba1\u7ebf\u5835\u585e\u6216 DEF \u53d7\u6c61\u67d3\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u5982\u4f55\u8bca\u65ad\uff1f<\/h3>\n<p>\u8bca\u65ad\u901a\u5e38\u5305\u62ec\u4f7f\u7528 OBD-II \u626b\u63cf\u4eea\u3001\u68c0\u67e5 DEF \u7cfb\u7edf\u548c\u6d4b\u8bd5\u76f8\u5173\u7ec4\u4ef6\u3002<\/p>\n<h3>\u8bca\u65ad P20E9 \u4ee3\u7801\u9700\u8981\u54ea\u4e9b\u5de5\u5177\uff1f<\/h3>\n<p>\u901a\u5e38\u9700\u8981 OBD-II \u626b\u63cf\u4eea\u3001\u4e07\u7528\u8868\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u538b\u529b\u8868\u3002<\/p>\n<h3>\u6211\u53ef\u4ee5\u81ea\u5df1\u6e05\u9664 P20E9 \u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u53ef\u4ee5\u6e05\u9664\u4ee3\u7801\uff0c\u4f46\u5982\u679c\u4ee3\u7801\u5f88\u5feb\u8fd4\u56de\uff0c\u53ef\u80fd\u5b58\u5728\u9700\u8981\u89e3\u51b3\u7684\u6f5c\u5728\u95ee\u9898\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u7684\u6f5c\u5728\u89e3\u51b3\u65b9\u6848\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u5305\u62ec\u66f4\u6362 DEF \u6cf5\u3001\u538b\u529b\u4f20\u611f\u5668\u3001\u6e05\u6d01 DEF \u7ba1\u7ebf\u6216\u66f4\u65b0 ECM \u8f6f\u4ef6\u3002<\/p>\n<h3>\u5982\u4f55\u9632\u6b62 P20E9 \u4ee3\u7801\u7684\u53d1\u751f\uff1f<\/h3>\n<p>\u5b9a\u671f\u7ef4\u62a4\u3001\u4f7f\u7528\u9ad8\u8d28\u91cf DEF \u5e76\u53ca\u65f6\u5904\u7406 SCR \u7cfb\u7edf\u95ee\u9898\u53ef\u4ee5\u5e2e\u52a9\u9884\u9632\u6b64\u4ee3\u7801\u3002<\/p>\n<h3>P20E9 \u76f8\u5173\u95ee\u9898\u7684\u4fee\u590d\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590d\u8d39\u7528\u901a\u5e38\u5728 100 \u5230 800 \u7f8e\u5143\uff08\u20ac85 \u5230 \u20ac670\uff09\u4e4b\u95f4\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u95ee\u9898\u53ca\u6240\u9700\u7684\u96f6\u90e8\u4ef6\u3002<\/p>\n<h3>\u6211\u53ef\u4ee5\u81ea\u5df1\u4fee\u590d\u4e0e P20E9 \u76f8\u5173\u7684\u95ee\u9898\u5417\uff1f<\/h3>\n<p>\u6709\u7ecf\u9a8c\u7684 DIY \u7231\u597d\u8005\u53ef\u4ee5\u89e3\u51b3\u4e00\u4e9b\u95ee\u9898\uff0c\u4f46\u7531\u4e8e SCR \u7cfb\u7edf\u7684\u590d\u6742\u6027\uff0c\u5efa\u8bae\u8fdb\u884c\u4e13\u4e1a\u8bca\u65ad\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u5982\u4f55\u5f71\u54cd\u8f66\u8f86\u6027\u80fd\uff1f<\/h3>\n<p>\u5b83\u53ef\u80fd\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u3001\u71c3\u6cb9\u6548\u7387\u964d\u4f4e\u4ee5\u53ca\u6f5c\u5728\u7684\u9a7e\u9a76\u6027\u95ee\u9898\u3002<\/p>\n<h3>\u5ffd\u7565 P20E9 \u4ee3\u7801\u6709\u4ec0\u4e48\u98ce\u9669\uff1f<\/h3>\n<p>\u5ffd\u7565\u8be5\u4ee3\u7801\u53ef\u80fd\u5bfc\u81f4 SCR \u7ec4\u4ef6\u7684\u78e8\u635f\u589e\u52a0\uff0c\u5e76\u53ef\u80fd\u8fdd\u53cd\u6392\u653e\u6cd5\u89c4\u3002<\/p>\n<h3>P20E9 \u901a\u5e38\u4e0e\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\u76f8\u5173\uff1f<\/h3>\n<p>\u76f8\u5173\u4ee3\u7801\u53ef\u80fd\u5305\u62ec P20EE\uff08SCR NOx \u50ac\u5316\u5242\u6548\u7387\u4f4e\u4e8e\u9608\u503c\uff09\u548c <a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20e8-scr-nox-catalyst-efficiency-below-threshold\/\" title=\"P20E8\uff08\u8fd8\u539f\u5242\u538b\u529b\u8fc7\u4f4e\uff09\u3002\">P20E8\uff08\u8fd8\u539f\u5242\u538b\u529b\u8fc7\u4f4e\uff09\u3002<\/a><\/p>\n<h3>DEF \u8d28\u91cf\u5982\u4f55\u5f71\u54cd P20E9 \u4ee3\u7801\uff1f<\/h3>\n<p>\u52a3\u8d28\u6216\u53d7\u6c61\u67d3\u7684 DEF \u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u6545\u969c\u5e76\u89e6\u53d1 P20E9 \u4ee3\u7801\u3002<\/p>\n<h3>\u6781\u7aef\u6e29\u5ea6\u4f1a\u5bfc\u81f4 P20E9 \u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u4e0d\u662f\u76f4\u63a5\u539f\u56e0\uff0c\u4f46\u6781\u7aef\u6e29\u5ea6\u53ef\u80fd\u4f1a\u5f71\u54cd DEF \u8d28\u91cf\u548c\u7cfb\u7edf\u6027\u80fd\uff0c\u53ef\u80fd\u5bfc\u81f4\u8be5\u95ee\u9898\u3002<\/p>\n<h3>P20E9 \u4ee3\u7801\u662f\u5426\u5728\u8f66\u8f86\u4fdd\u4fee\u8303\u56f4\u5185\uff1f<\/h3>\n<p>\u8986\u76d6\u8303\u56f4\u53d6\u51b3\u4e8e\u8f66\u8f86\u7684\u4f7f\u7528\u5e74\u9650\u3001\u91cc\u7a0b\u548c\u5177\u4f53\u7684\u4fdd\u4fee\u6761\u6b3e\u3002\u8bf7\u4e0e\u5236\u9020\u5546\u6216\u7ecf\u9500\u5546\u6838\u5b9e\u3002<\/p>\n<h3>\u4fee\u590d P20E9 \u76f8\u5173\u95ee\u9898\u901a\u5e38\u9700\u8981\u591a\u957f\u65f6\u95f4\uff1f<\/h3>\n<p>\u7b80\u5355\u95ee\u9898\u7684\u4fee\u590d\u65f6\u95f4\u901a\u5e38\u4e3a 1-3 \u5c0f\u65f6\uff0c\u590d\u6742\u95ee\u9898\u53ef\u80fd\u9700\u8981\u66f4\u957f\u65f6\u95f4\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6839\u672c\u539f\u56e0\u3002<\/p>\n<p>\u6b64\u5e38\u89c1\u95ee\u9898\u89e3\u7b54\u6db5\u76d6\u4e86 P20E9 \u4ee3\u7801\u7684\u5173\u952e\u65b9\u9762\uff0c\u4e3a\u5de5\u7a0b\u5e08\u548c\u6280\u5e08\u63d0\u4f9b\u4e86\u8be5\u4ee3\u7801\u7684\u8be6\u7ec6\u5206\u6790\u3001\u8bca\u65ad\u548c\u6f5c\u5728\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P20E9: SCR NOx Catalyst Conversion Efficiency Warning O<\/p>\n","protected":false},"author":13,"featured_media":287690,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-287688","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\/287688","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=287688"}],"version-history":[{"count":5,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287688\/revisions"}],"predecessor-version":[{"id":288562,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287688\/revisions\/288562"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media\/287690"}],"wp:attachment":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media?parent=287688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/categories?post=287688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/tags?post=287688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}