{"id":287696,"date":"2024-10-23T08:31:25","date_gmt":"2024-10-23T08:31:25","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287696"},"modified":"2024-11-04T11:50:14","modified_gmt":"2024-11-04T11:50:14","slug":"p20fa-reductant-pump-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20fa-reductant-pump-control-circuit-low\/","title":{"rendered":"P20FA &#8211; \u8fd8\u539f\u6cf5\u63a7\u5236\u7535\u8def\u4f4e"},"content":{"rendered":"<h2 id=\"urgency-and-immediate-actions\">Urgency and Immediate Actions<\/h2>\n<p>The P20FA code indicates a critical issue with the reductant pump control circuit in diesel vehicles equipped with Selective Catalytic Reduction (SCR) systems. This problem is considered serious and can lead to damage if not addressed promptly.<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6211\u4eec\u7ecf\u5e38\u770b\u5230 P20FA \u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u914d\u5907 SCR \u7cfb\u7edf\u7684\u6b27\u6d32\u67f4\u6cb9\u8f66\u8f86\u4e0a\u3002\u6211\u4eec\u6700\u5e38\u89c1\u4e8e\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70 Sprinter\u3001\u5927\u4f17 TDI \u548c\u5b9d\u9a6c\u67f4\u6cb9\u8f66\u578b\u3002\u5728\u6211\u4eec\u7684\u7ecf\u9a8c\u4e2d\uff0c\u6b64\u4ee3\u7801\u901a\u5e38\u4e0e\u8fd8\u539f\u5242 (DEF) \u6cf5\u6216\u5176\u63a7\u5236\u7535\u8def\u7684\u95ee\u9898\u6709\u5173\u3002\u6211\u4eec\u53d1\u73b0\uff0c\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u95ee\u9898\u6765\u81ea\u7535\u8fde\u63a5\u8150\u8680\u6216\u6cf5\u6545\u969c\uff0c\u800c\u4e0d\u662f\u5b9e\u9645\u7684 DEF \u8d28\u91cf\u95ee\u9898\u3002\u867d\u7136\u6211\u4eec\u5076\u5c14\u4e5f\u5728\u7f8e\u56fd\u548c\u4e9a\u6d32\u8f66\u8f86\u4e0a\u770b\u5230\u5b83\uff0c\u4f46\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6b27\u6d32\u54c1\u724c\u66f4\u5e38\u89c1\u3002<\/p>\n<\/div>\n<p><strong>Severity:<\/strong> \u9ad8<br \/>\n<strong>Continued Driving:<\/strong> \u4e0d\u5efa\u8bae<br \/>\n<strong>Dealer Attention:<\/strong> \u5efa\u8bae\u5c3d\u5feb\u8054\u7cfb<\/p>\n<p>\u867d\u7136\u8f66\u8f86\u53ef\u80fd\u4ecd\u53ef\u64cd\u4f5c\uff0c\u4f46\u7ee7\u7eed\u9a7e\u9a76\u5e76\u6fc0\u6d3b\u6b64\u4ee3\u7801\u53ef\u80fd\u4f1a\u635f\u574f SCR \u7cfb\u7edf\uff0c\u5e76\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\uff0c\u751a\u81f3\u53ef\u80fd\u5bfc\u81f4\u53d1\u52a8\u673a\u5173\u95ed\u3002\u5f3a\u70c8\u5efa\u8bae\u5c3d\u5feb\u7531\u5408\u683c\u6280\u5e08\u6216\u7ecf\u9500\u5546\u68c0\u67e5\u8f66\u8f86\u3002<\/p>\n<h2 id=\"code-specifics\">\u4ee3\u7801\u8be6\u60c5<\/h2>\n<p>P20FA \u662f\u4e0e\u8f66\u8f86\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u76f8\u5173\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\u3002\u8be5\u4ee3\u7801\u7684\u5b9a\u4e49\u662f\uff1a<\/p>\n<ul>\n<li>P = \u52a8\u529b\u603b\u6210<\/li>\n<li>20 = \u71c3\u6599\u548c\u7a7a\u6c14\u8ba1\u91cf\uff08\u55b7\u6cb9\u5668\u7535\u8def\uff09<\/li>\n<li>FA = \u7279\u5b9a\u6545\u969c\u7d22\u5f15<\/li>\n<\/ul>\n<p>\u6b64\u4ee3\u7801\u5177\u4f53\u6307\u8fd8\u539f\u5242\u6cf5 &#8220;B&#8221; \u63a7\u5236\u7cfb\u7edf\u4e2d\u7684\u5f00\u8def\u95ee\u9898\u3002\u867d\u7136\u8fd9\u662f\u4e00\u4e2a\u901a\u7528\u4ee3\u7801\uff0c\u4f46\u5177\u4f53\u7684\u5b9e\u65bd\u548c\u7cfb\u7edf\u8bbe\u8ba1\u53ef\u80fd\u56e0\u5236\u9020\u5546\u800c\u5f02\u3002<\/p>\n<h2 id=\"components-involved\">\u6d89\u53ca\u7684\u7ec4\u4ef6<\/h2>\n<p>\u6b64\u6545\u969c\u4ee3\u7801\u6d89\u53ca\u7684\u4e3b\u8981\u7ec4\u4ef6\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u8fd8\u539f\u5242\u6cf5 &#8216;B&#8217;\uff1a\u8d1f\u8d23\u5411 SCR \u7cfb\u7edf\u8f93\u9001\u67f4\u6cb9\u6392\u6c14\u6db2 (DEF)\u3002<\/li>\n<li>\u63a7\u5236\u7535\u8def\uff1a\u63a7\u5236\u8fd8\u539f\u5242\u6cf5\u64cd\u4f5c\u7684\u7535\u6c14\u8def\u5f84\u3002<\/li>\n<li>\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM)\uff1a\u76d1\u63a7\u548c\u63a7\u5236\u8fd8\u539f\u5242\u7cfb\u7edf\u3002<\/li>\n<li>\u7ebf\u675f\uff1a\u5c06 PCM \u8fde\u63a5\u5230\u8fd8\u539f\u5242\u6cf5\u3002<\/li>\n<li>SCR \u7cfb\u7edf\uff1a\u4f7f\u7528 DEF \u964d\u4f4e\u67f4\u6cb9\u5e9f\u6c14\u4e2d\u7684 NOx \u6392\u653e\u3002<\/li>\n<\/ol>\n<p>\u8fd8\u539f\u5242\u6cf5\u5728 SCR \u7cfb\u7edf\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u901a\u8fc7\u7cbe\u786e\u5730\u5c06 DEF \u6ce8\u5165\u6392\u6c14\u6d41\u3002\u5176\u63a7\u5236\u7cfb\u7edf\u4e2d\u7684\u5f00\u8def\u53ef\u80fd\u4f1a\u963b\u6b62 DEF \u7684\u6b63\u5e38\u8f93\u9001\uff0c\u5bfc\u81f4\u6392\u653e\u589e\u52a0\u5e76\u53ef\u80fd\u51fa\u73b0\u53d1\u52a8\u673a\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>\u89e6\u53d1 P20FA \u4ee3\u7801\u7684\u51e0\u4e2a\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u8fd8\u539f\u5242\u6cf5\u6545\u969c<\/li>\n<li>\u6cf5\u63a7\u5236\u7535\u8def\u4e2d\u7684\u63a5\u7ebf\u635f\u574f\u6216\u8150\u8680<\/li>\n<li>\u7535\u6c14\u8fde\u63a5\u5668\u677e\u52a8\u6216\u65ad\u5f00<\/li>\n<li>PCM \u6545\u969c\uff08\u7f55\u89c1\uff09<\/li>\n<li>DEF \u8d28\u91cf\u95ee\u9898\u6216\u6c61\u67d3<\/li>\n<li>\u8fd8\u539f\u5242\u6cf5\u7535\u8def\u4e2d\u7684\u4fdd\u9669\u4e1d\u70e7\u65ad<\/li>\n<\/ol>\n<p>\u7535\u6c14\u548c\u673a\u68b0\u95ee\u9898\u90fd\u53ef\u80fd\u5bfc\u81f4\u6b64\u6545\u969c\u3002\u5e38\u89c1\u7684\u7535\u6c14\u95ee\u9898\u5305\u62ec\u63a5\u7ebf\u65ad\u88c2\u6216\u8fde\u63a5\u5668\u6545\u969c\uff0c\u800c\u6cf5\u672c\u8eab\u7684\u673a\u68b0\u6545\u969c\u4e5f\u53ef\u80fd\u89e6\u53d1\u6b64\u4ee3\u7801\u3002<\/p>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<p>\u8981\u8bca\u65ad P20FA \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\u5e76\u786e\u8ba4 P20FA \u4ee3\u7801\u3002<\/li>\n<li>\u68c0\u67e5\u53ef\u80fd\u76f8\u5173\u7684\u5176\u4ed6\u4ee3\u7801\u3002<\/li>\n<li>\u68c0\u67e5 DEF \u6db2\u4f4d\u548c\u8d28\u91cf\u3002<\/li>\n<li>\u76ee\u89c6\u68c0\u67e5\u4e0e\u8fd8\u539f\u5242\u6cf5\u76f8\u5173\u7684\u6240\u6709\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\u3002<\/li>\n<li>\u6d4b\u8bd5\u8fd8\u539f\u5242\u6cf5\u7684\u7535\u963b\u5e76\u4e0e\u89c4\u683c\u8fdb\u884c\u6bd4\u8f83\u3002<\/li>\n<li>\u68c0\u67e5 PCM \u547d\u4ee4\u6253\u5f00\u65f6\u6cf5\u7684\u7535\u538b\u4f9b\u5e94\u3002<\/li>\n<li>\u5728 PCM \u548c\u8fd8\u539f\u5242\u6cf5\u4e4b\u95f4\u8fdb\u884c\u7535\u8def\u8fde\u7eed\u6027\u6d4b\u8bd5\u3002<\/li>\n<li>\u5982\u679c\u5176\u4ed6\u6d4b\u8bd5\u90fd\u901a\u8fc7\uff0c\u8003\u8651\u6d4b\u8bd5 PCM \u8f93\u51fa\u3002<\/li>\n<\/ol>\n<p>\u6240\u9700\u5de5\u5177\uff1aOBD-II \u626b\u63cf\u4eea\u3001\u6570\u5b57\u4e07\u7528\u8868\u3001\u63a5\u7ebf\u56fe\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u4e13\u7528 SCR \u7cfb\u7edf\u6d4b\u8bd5\u4eea\u3002<\/p>\n<h2 id=\"solutions\">\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>\u6839\u636e\u8bca\u65ad\u7ed3\u679c\uff0c\u89e3\u51b3\u65b9\u6848\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u4fee\u590d\u6216\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf<\/li>\n<li>\u66f4\u6362\u8150\u8680\u6216\u677e\u52a8\u7684\u8fde\u63a5\u5668<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u6cf5<\/li>\n<li>\u5982\u679c\u6709\u53ef\u7528\u7684\uff0c\u66f4\u65b0 PCM \u8f6f\u4ef6<\/li>\n<li>\u5728\u7f55\u89c1\u60c5\u51b5\u4e0b\uff0c\u66f4\u6362 PCM<\/li>\n<\/ol>\n<p>\u8bf7\u59cb\u7ec8\u53c2\u8003\u8f66\u8f86\u670d\u52a1\u624b\u518c\uff0c\u4e86\u89e3\u5177\u4f53\u7684\u7ef4\u4fee\u7a0b\u5e8f\u548c\u626d\u77e9\u89c4\u683c\u3002<\/p>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<p>\u4e3a\u9632\u6b62 P20FA \u53ca\u76f8\u5173\u95ee\u9898\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF \u5e76\u4fdd\u6301\u7f50\u6ee1<\/li>\n<li>\u5b9a\u671f\u7ef4\u62a4 SCR \u7cfb\u7edf<\/li>\n<li>\u4fdd\u62a4\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\u514d\u53d7\u8150\u8680\u548c\u7269\u7406\u635f\u574f<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u4efb\u4f55\u4e0e DEF \u76f8\u5173\u7684\u8b66\u544a\u706f<\/li>\n<\/ol>\n<h2 id=\"cost-analysis\">\u6210\u672c\u5206\u6790<\/h2>\n<p>\u7ef4\u4fee\u8d39\u7528\u53ef\u80fd\u56e0\u6839\u672c\u539f\u56e0\u800c\u5f02\uff1a<\/p>\n<ul>\n<li>\u63a5\u7ebf\u4fee\u7406\uff1a100-300 \u7f8e\u5143\uff08\u20ac90-\u20ac270\uff09<\/li>\n<li>\u8fd8\u539f\u5242\u6cf5\u66f4\u6362\uff1a500-1000 \u7f8e\u5143\uff08\u20ac450-\u20ac900\uff09<\/li>\n<li>PCM \u66f4\u6362\u548c\u7f16\u7a0b\uff1a1000-2000 \u7f8e\u5143\uff08\u20ac900-\u20ac1800\uff09<\/li>\n<\/ul>\n<p>\u4eba\u5de5\u8d39\u7528\u901a\u5e38\u4e3a\u6bcf\u5c0f\u65f6 100-200 \u7f8e\u5143\uff08\u20ac90-\u20ac180\uff09\u3002<\/p>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<p>P20FA \u901a\u5e38\u4e0e\u5176\u4ed6 SCR \u7cfb\u7edf\u4ee3\u7801\u540c\u65f6\u51fa\u73b0\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>P20EE\uff1aSCR NOx \u50ac\u5316\u5242\u6548\u7387\u4f4e\u4e8e\u9608\u503c<\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p204f-reductant-system-performance\/\" title=\"P204F\uff1a\u8fd8\u539f\u5242\u7cfb\u7edf\u6027\u80fd\">P204F\uff1a\u8fd8\u539f\u5242\u7cfb\u7edf\u6027\u80fd<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p203f-reductant-dosing-valve-calibration-values-not-learned\/\" title=\"P203F\uff1a\u8fd8\u539f\u5242\u6db2\u4f4d\u4f20\u611f\u5668\u7535\u8def\u8303\u56f4\/\u6027\u80fd\">P203F\uff1a\u8fd8\u539f\u5242\u6db2\u4f4d\u4f20\u611f\u5668\u7535\u8def\u8303\u56f4\/\u6027\u80fd<\/a><\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u4ee3\u7801\u53ef\u80fd\u8868\u660e SCR \u7cfb\u7edf\u4e2d\u5b58\u5728\u66f4\u5e7f\u6cdb\u7684\u95ee\u9898\uff0c\u5e94\u5168\u9762\u5904\u7406\u3002<\/p>\n<h2 id=\"p20fa-diagnostic-trouble-code-faq\">P20FA \u8bca\u65ad\u6545\u969c\u4ee3\u7801\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>P20FA \u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>P20FA \u8868\u793a\u8f66\u8f86\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u4e2d\u8fd8\u539f\u5242\u6cf5 &#8216;B&#8217; \u63a7\u5236\u7535\u8def\/\u5f00\u8def\u95ee\u9898\u3002<\/p>\n<h3>P20FA \u4ee3\u7801\u6709\u591a\u4e25\u91cd\uff1f<\/h3>\n<p>\u6b64\u4ee3\u7801\u88ab\u8ba4\u4e3a\u662f\u4e25\u91cd\u95ee\u9898\uff0c\u5982\u679c\u4e0d\u53ca\u65f6\u5904\u7406\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u635f\u574f\u3002\u5efa\u8bae\u5c3d\u5feb\u68c0\u67e5\u8f66\u8f86\u3002<\/p>\n<h3>\u5e26\u6709 P20FA \u4ee3\u7801\u7684\u8f66\u8f86\u8fd8\u80fd\u7ee7\u7eed\u9a7e\u9a76\u5417\uff1f<\/h3>\n<p>\u4e0d\u5efa\u8bae\u7ee7\u7eed\u9a7e\u9a76\uff0c\u56e0\u4e3a\u8fd9\u53ef\u80fd\u4f1a\u635f\u574f SCR \u7cfb\u7edf\uff0c\u5e76\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u6216\u5173\u95ed\u3002<\/p>\n<h3>P20FA \u4ee3\u7801\u6d89\u53ca\u54ea\u4e9b\u7ec4\u4ef6\uff1f<\/h3>\n<p>\u4e3b\u8981\u6d89\u53ca\u7684\u7ec4\u4ef6\u5305\u62ec\u8fd8\u539f\u5242\u6cf5 &#8216;B&#8217;\u3001\u5176\u63a7\u5236\u7535\u8def\u3001\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u548c SCR \u7cfb\u7edf\u3002<\/p>\n<h3>P20FA \u662f\u901a\u7528\u4ee3\u7801\u8fd8\u662f\u5236\u9020\u5546\u7279\u5b9a\u4ee3\u7801\uff1f<\/h3>\n<p>P20FA \u662f\u4e0e\u8f66\u8f86\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u76f8\u5173\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\u3002<\/p>\n<h3>P20FA \u4ee3\u7801\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u539f\u56e0\u5305\u62ec\u8fd8\u539f\u5242\u6cf5\u6545\u969c\u3001\u63a5\u7ebf\u635f\u574f\u3001\u8fde\u63a5\u5668\u677e\u52a8\u3001PCM \u95ee\u9898\u6216 DEF \u8d28\u91cf\u95ee\u9898\u3002<\/p>\n<h3>P20FA \u4ee3\u7801\u5982\u4f55\u8bca\u65ad\uff1f<\/h3>\n<p>\u8bca\u65ad\u901a\u5e38\u6d89\u53ca\u4f7f\u7528 OBD-II \u626b\u63cf\u4eea\u3001\u68c0\u67e5\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\u3001\u6d4b\u8bd5\u8fd8\u539f\u5242\u6cf5\u7684\u7535\u963b\uff0c\u5e76\u68c0\u67e5\u7535\u538b\u4f9b\u5e94\u548c\u7535\u8def\u8fde\u7eed\u6027\u3002<\/p>\n<h3>\u8bca\u65ad P20FA \u4ee3\u7801\u9700\u8981\u54ea\u4e9b\u5de5\u5177\uff1f<\/h3>\n<p>\u6240\u9700\u5de5\u5177\u5305\u62ec OBD-II \u626b\u63cf\u4eea\u3001\u6570\u5b57\u4e07\u7528\u8868\u3001\u63a5\u7ebf\u56fe\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u4e13\u7528 SCR \u7cfb\u7edf\u6d4b\u8bd5\u4eea\u3002<\/p>\n<h3>\u53ef\u4ee5\u5728\u5bb6\u4fee\u590d P20FA \u5417\uff1f<\/h3>\n<p>\u867d\u7136\u6709\u7ecf\u9a8c\u7684\u673a\u68b0\u5e08\u53ef\u80fd\u53ef\u4ee5\u5b8c\u6210\u4e00\u4e9b\u7ef4\u4fee\uff0c\u4f46\u7531\u4e8e\u5176\u590d\u6742\u6027\uff0c\u5efa\u8bae\u7531\u4e13\u4e1a\u4eba\u5458\u8fdb\u884c\u8bca\u65ad\u548c\u7ef4\u4fee\u3002<\/p>\n<h3>P20FA \u7684\u6f5c\u5728\u4fee\u590d\u63aa\u65bd\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u4fee\u590d\u53ef\u80fd\u5305\u62ec\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf\u3001\u8fde\u63a5\u5668\u6216\u8fd8\u539f\u5242\u6cf5\uff0c\u66f4\u65b0 PCM \u8f6f\u4ef6\uff0c\u6216\u5728\u7f55\u89c1\u60c5\u51b5\u4e0b\u66f4\u6362 PCM\u3002<\/p>\n<h3>P20FA \u76f8\u5173\u95ee\u9898\u7684\u4fee\u590d\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590d\u8d39\u7528\u8303\u56f4\u5728 100-2000 \u7f8e\u5143\uff08\u20ac90-\u20ac1800\uff09\u4e4b\u95f4\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6839\u672c\u539f\u56e0\u548c\u6240\u9700\u7684\u4fee\u7406\u3002<\/p>\n<h3>P20FA \u4f1a\u5f71\u54cd\u71c3\u6cb9\u7ecf\u6d4e\u6027\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0cSCR \u7cfb\u7edf\u6545\u969c\u53ef\u80fd\u4f1a\u5f71\u54cd\u71c3\u6cb9\u7ecf\u6d4e\u6027\u548c\u53d1\u52a8\u673a\u6027\u80fd\u3002<\/p>\n<h3>P20FA \u4f1a\u89e6\u53d1\u68c0\u67e5\u53d1\u52a8\u673a\u706f\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0cP20FA \u901a\u5e38\u4f1a\u89e6\u53d1\u68c0\u67e5\u53d1\u52a8\u673a\u706f\u6216\u7279\u5b9a\u7684 DEF \u7cfb\u7edf\u8b66\u544a\u706f\u3002<\/p>\n<h3>\u6709\u54ea\u4e9b\u9884\u9632\u63aa\u65bd\u53ef\u4ee5\u907f\u514d P20FA\uff1f<\/h3>\n<p>\u5b9a\u671f\u7ef4\u62a4 SCR \u7cfb\u7edf\u3001\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF\uff0c\u5e76\u53ca\u65f6\u5904\u7406\u8b66\u544a\u706f\u53ef\u4ee5\u5e2e\u52a9\u9884\u9632 P20FA\u3002<\/p>\n<h3>\u4f4e\u8d28\u91cf DEF \u4f1a\u5bfc\u81f4 P20FA \u5417\uff1f<\/h3>\n<p>\u867d\u7136\u4f4e\u8d28\u91cf DEF \u4e0d\u662f P20FA \u7684\u76f4\u63a5\u539f\u56e0\uff0c\u4f46\u5b83\u53ef\u80fd\u5bfc\u81f4 SCR \u7cfb\u7edf\u95ee\u9898\uff0c\u8fdb\u800c\u89e6\u53d1\u6b64\u4ee3\u7801\u3002<\/p>\n<h3>P20FA \u901a\u5e38\u4e0e\u54ea\u4e9b\u5176\u4ed6\u4ee3\u7801\u76f8\u5173\uff1f<\/h3>\n<p>\u76f8\u5173\u4ee3\u7801\u53ef\u80fd\u5305\u62ec P20EE\u3001<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p204f-reductant-system-performance\/\" title=\"P204F\">P204F<\/a> \u548c <a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p203f-reductant-dosing-valve-calibration-values-not-learned\/\" title=\"P203F\">P203F<\/a>\uff0c\u8fd9\u4e9b\u4ee3\u7801\u4e5f\u4e0e SCR \u7cfb\u7edf\u95ee\u9898\u76f8\u5173\u3002<\/p>\n<h3>P20FA \u4f1a\u5f71\u54cd\u6392\u653e\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u7531\u4e8e P20FA \u8868\u793a SCR \u7cfb\u7edf\u5b58\u5728\u95ee\u9898\uff0c\u5982\u679c\u4e0d\u53ca\u65f6\u5904\u7406\uff0c\u53ef\u80fd\u5bfc\u81f4\u6392\u653e\u589e\u52a0\u3002<\/p>\n<h3>\u6781\u7aef\u5929\u6c14\u4f1a\u89e6\u53d1 P20FA \u5417\uff1f<\/h3>\n<p>\u867d\u7136\u4e0d\u662f\u76f4\u63a5\u539f\u56e0\uff0c\u4f46\u6781\u7aef\u5bd2\u51b7\u53ef\u80fd\u4f1a\u5f71\u54cd DEF \u5e76\u53ef\u80fd\u5bfc\u81f4 SCR \u7cfb\u7edf\u95ee\u9898\u3002<\/p>\n<h3>\u4fee\u590d P20FA \u95ee\u9898\u901a\u5e38\u9700\u8981\u591a\u957f\u65f6\u95f4\uff1f<\/h3>\n<p>\u6839\u636e\u6839\u672c\u539f\u56e0\u548c\u6240\u9700\u7684\u4fee\u7406\uff0c\u4fee\u590d\u65f6\u95f4\u901a\u5e38\u4e3a 1-4 \u5c0f\u65f6\u3002<\/p>\n<h3>P20FA \u4f1a\u81ea\u884c\u6e05\u9664\u5417\uff1f<\/h3>\n<p>\u5728\u4e0d\u89e3\u51b3\u6839\u672c\u95ee\u9898\u7684\u60c5\u51b5\u4e0b\uff0cP20FA \u4e0d\u592a\u53ef\u80fd\u81ea\u884c\u6e05\u9664\u3002\u5373\u4f7f\u4ee3\u7801\u6682\u65f6\u6d88\u5931\uff0c\u5982\u679c\u95ee\u9898\u6301\u7eed\u5b58\u5728\uff0c\u5b83\u53ef\u80fd\u4f1a\u518d\u6b21\u51fa\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Urgency and Immediate Actions The P20FA code indicates <\/p>\n","protected":false},"author":13,"featured_media":287698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-287696","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\/287696","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=287696"}],"version-history":[{"count":4,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287696\/revisions"}],"predecessor-version":[{"id":288565,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/posts\/287696\/revisions\/288565"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media\/287698"}],"wp:attachment":[{"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/media?parent=287696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/categories?post=287696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ziptuning.com\/zh\/wp-json\/wp\/v2\/tags?post=287696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}