{"id":287706,"date":"2024-10-23T09:01:47","date_gmt":"2024-10-23T09:01:47","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287706"},"modified":"2024-11-04T11:54:53","modified_gmt":"2024-11-04T11:54:53","slug":"p20fb-reductant-pump-control-circuit-high","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20fb-reductant-pump-control-circuit-high\/","title":{"rendered":"P20FB &#8211; \u8fd8\u539f\u6cf5\u63a7\u5236\u7535\u8def\u9ad8"},"content":{"rendered":"<h2 id=\"p20fb-reductant-pump-control-circuit-high\">P20FB &#8211; Reductant Pump Control Circuit High<\/h2>\n<p>The P20FB trouble code indicates a problem with the Reductant Pump &#8216;B&#8217; Performance or that it is stuck in the off position. This code is primarily associated with diesel engines equipped with Selective Catalytic Reduction (SCR) systems, which use Diesel Exhaust Fluid (DEF) or AdBlue to reduce harmful emissions.<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\uff0c\u6211\u4eec\u7ecf\u5e38\u770b\u5230 P20FB \u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u914d\u5907 SCR \u7cfb\u7edf\u7684\u6b27\u6d32\u54c1\u724c\u67f4\u6cb9\u8f66\u578b\u4e0a\u3002\u8fd9\u5728\u5927\u4f17\u3001\u5b9d\u9a6c\u548c\u8def\u864e\u7b49\u67f4\u6cb9\u8f66\u4e2d\u5c24\u5176\u5e38\u89c1\u3002\u6211\u4eec\u6ce8\u610f\u5230\uff0c\u901a\u5e38\u8f66\u8f86\u5728\u884c\u9a76 50,000 \u81f3 80,000 \u516c\u91cc\u540e\u4f1a\u51fa\u73b0\u6b64\u4ee3\u7801\u3002\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u95ee\u9898\u4e0e\u6545\u969c\u7684\u8fd8\u539f\u5242\u6cf5\u6216\u53d7\u6c61\u67d3\u7684 DEF \u6db2\u6709\u5173\u3002\u6211\u4eec\u89c2\u5bdf\u5230\uff0c\u8def\u864e\u8f66\u578b\u4f3c\u4e4e\u66f4\u5bb9\u6613\u51fa\u73b0\u6b64\u95ee\u9898\uff0c\u5f80\u5f80\u9700\u8981\u66f4\u6362\u6574\u4e2a DEF \u6cf5\u603b\u6210\u3002\u867d\u7136\u8fd9\u79cd\u60c5\u51b5\u5728\u4e00\u4e9b\u7f8e\u56fd\u548c\u4e9a\u6d32\u67f4\u6cb9\u8f66\u4e2d\u4e5f\u6709\u51fa\u73b0\uff0c\u4f46\u4e0e\u6211\u4eec\u5904\u7406\u7684 P20FB \u76f8\u5173\u7ef4\u4fee\u76f8\u6bd4\uff0c\u6b27\u6d32\u8f66\u578b\u5360\u4e86\u5927\u591a\u6570\u3002<\/p>\n<\/div>\n<h2 id=\"urgency-and-drivability\">\u7d27\u6025\u6027\u548c\u53ef\u9a7e\u9a76\u6027<\/h2>\n<p>\u867d\u7136 P20FB \u901a\u5e38\u4e0d\u4f1a\u7acb\u5373\u5bfc\u81f4\u53d1\u52a8\u673a\u635f\u574f\uff0c\u4f46\u5e94\u5c3d\u5feb\u5904\u7406\uff1a<\/p>\n<ul>\n<li><strong>\u77ed\u671f\u9a7e\u9a76<\/strong>\uff1a\u53ef\u4ee5\u7ee7\u7eed\u77ed\u9014\u9a7e\u9a76\uff0c\u4f46\u957f\u671f\u64cd\u4f5c\u53ef\u80fd\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u548c\u6392\u653e\u589e\u52a0\u3002<\/li>\n<li><strong>\u957f\u671f\u5f71\u54cd<\/strong>\uff1a\u5ffd\u89c6\u95ee\u9898\u53ef\u80fd\u4f1a\u635f\u574f SCR \u7cfb\u7edf\uff0c\u5e76\u53ef\u80fd\u5bfc\u81f4\u4e0d\u7b26\u5408\u6392\u653e\u6cd5\u89c4\u3002<\/li>\n<\/ul>\n<p><strong>\u5efa\u8bae<\/strong>\uff1a\u5c3d\u5feb\u5b89\u6392\u7ef4\u4fee\u3002\u867d\u7136\u4e0d\u9700\u8981\u7acb\u5373\u505c\u6b62\u9a7e\u9a76\uff0c\u4f46\u5728\u95ee\u9898\u89e3\u51b3\u4e4b\u524d\u907f\u514d\u957f\u9014\u65c5\u884c\u3002<\/p>\n<h2 id=\"code-specifics\">\u4ee3\u7801\u8be6\u60c5<\/h2>\n<p>P20FB \u662f\u4e00\u4e2a\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5728\u4e0d\u540c\u7684\u8f66\u8f86\u5236\u9020\u5546\u4e4b\u95f4\u662f\u6807\u51c6\u5316\u7684\u3002\u7136\u800c\uff0c\u5177\u4f53\u7684\u7ec4\u4ef6\u548c\u8bca\u65ad\u7a0b\u5e8f\u53ef\u80fd\u56e0\u54c1\u724c\u548c\u8f66\u578b\u7565\u6709\u4e0d\u540c\u3002<\/p>\n<h3 id=\"key-components-involved\">\u6d89\u53ca\u7684\u5173\u952e\u7ec4\u4ef6<\/h3>\n<ol>\n<li><strong>\u8fd8\u539f\u5242\u6cf5<\/strong>\uff1a\u4e5f\u79f0\u4e3a DEF \u6cf5\u6216 AdBlue \u6cf5\uff0c\u8d1f\u8d23\u5c06\u8fd8\u539f\u5242\u6db2\u4f53\u6ce8\u5165\u6392\u6c14\u6d41\u3002<\/li>\n<li><strong>DEF\/AdBlue<\/strong>\uff1a\u4e00\u79cd\u57fa\u4e8e\u5c3f\u7d20\u7684\u6eb6\u6db2\uff0c\u53ef\u5206\u89e3\u6709\u5bb3\u7684 NOx \u6392\u653e\u3002<\/li>\n<li><strong>SCR \u7cfb\u7edf<\/strong>\uff1a\u901a\u8fc7\u8fd8\u539f\u5242\u5c06 NOx \u8f6c\u5316\u4e3a\u65e0\u5bb3\u7684\u6c2e\u6c14\u548c\u6c34\u3002<\/li>\n<li><strong>\u53d1\u52a8\u673a\u63a7\u5236\u6a21\u5757 (ECM)<\/strong>\uff1a\u76d1\u63a7\u5e76\u63a7\u5236 SCR \u7cfb\u7edf\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n<h3 id=\"role-of-the-reductant-pump\">\u8fd8\u539f\u5242\u6cf5\u7684\u4f5c\u7528<\/h3>\n<p>\u8fd8\u539f\u5242\u6cf5\u7cbe\u786e\u8ba1\u91cf\u5e76\u5c06 DEF \u6ce8\u5165\u6392\u6c14\u6d41\u3002\u5176\u6b63\u5e38\u8fd0\u884c\u5bf9\u4e8e\u4ee5\u4e0b\u65b9\u9762\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u7ef4\u6301\u6b63\u786e\u7684 NOx \u51cf\u6392\u6c34\u5e73<\/li>\n<li>\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6807\u51c6<\/li>\n<li>\u4f18\u5316\u53d1\u52a8\u673a\u6027\u80fd\u548c\u71c3\u6cb9\u6548\u7387<\/li>\n<\/ul>\n<h2 id=\"common-causes-of-p20fb\">P20FB \u7684\u5e38\u89c1\u539f\u56e0<\/h2>\n<ol>\n<li>\u8fd8\u539f\u5242\u6cf5\u6545\u969c<\/li>\n<li>\u7535\u6c14\u95ee\u9898\uff08\u63a5\u7ebf\u3001\u8fde\u63a5\u5668\u3001\u4fdd\u9669\u4e1d\uff09<\/li>\n<li>DEF \u6c61\u67d3\u6216\u7ed3\u6676<\/li>\n<li>DEF \u7ba1\u7ebf\u6216\u55b7\u5c04\u5668\u5835\u585e<\/li>\n<li>ECM \u8f6f\u4ef6\u95ee\u9898<\/li>\n<\/ol>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<ol>\n<li><strong>\u626b\u63cf\u5176\u4ed6\u4ee3\u7801<\/strong>\uff1aP20FB \u901a\u5e38\u4e0e\u5176\u4ed6 SCR \u76f8\u5173\u4ee3\u7801\u4e00\u8d77\u51fa\u73b0\u3002<\/li>\n<li><strong>\u68c0\u67e5 DEF \u6db2\u4f4d\u548c\u8d28\u91cf<\/strong>\uff1a\u786e\u4fdd\u6cb9\u7bb1\u5145\u6ee1\u65b0\u9c9c\u4e14\u65e0\u6c61\u67d3\u7684 DEF\u3002<\/li>\n<li><strong>\u68c0\u67e5\u7535\u6c14\u8fde\u63a5<\/strong>\uff1a\u67e5\u627e\u8150\u8680\u3001\u677e\u52a8\u7684\u8fde\u63a5\u6216\u635f\u574f\u7684\u63a5\u7ebf\u3002<\/li>\n<li><strong>\u68c0\u67e5 DEF \u7ba1\u7ebf\u548c\u55b7\u5c04\u5668<\/strong>\uff1a\u68c0\u67e5\u662f\u5426\u6709\u5835\u585e\u6216\u6cc4\u6f0f\u3002<\/li>\n<li><strong>\u6d4b\u8bd5\u8fd8\u539f\u5242\u6cf5\u7684\u64cd\u4f5c<\/strong>\uff1a\u4f7f\u7528\u8bca\u65ad\u5de5\u5177\u6fc0\u6d3b\u6cf5\u5e76\u6d4b\u91cf\u5176\u6027\u80fd\u3002<\/li>\n<li><strong>\u5206\u6790\u51bb\u7ed3\u5e27\u6570\u636e<\/strong>\uff1a\u67e5\u770b\u8bbe\u7f6e\u4ee3\u7801\u65f6\u7684\u64cd\u4f5c\u6761\u4ef6\u3002<\/li>\n<li><strong>\u8fdb\u884c\u538b\u529b\u548c\u6d41\u91cf\u6d4b\u8bd5<\/strong>\uff1a\u9a8c\u8bc1\u6cf5\u7684\u8f93\u51fa\u548c\u7cfb\u7edf\u538b\u529b\u3002<\/li>\n<\/ol>\n<h2 id=\"solutions-and-repair-options\">\u89e3\u51b3\u65b9\u6848\u548c\u7ef4\u4fee\u9009\u9879<\/h2>\n<ol>\n<li><strong>\u66f4\u6362\u8fd8\u539f\u5242\u6cf5<\/strong>\uff1a\u5982\u679c\u8bca\u65ad\u4e3a\u6545\u969c<\/li>\n<li><strong>\u4fee\u590d\u63a5\u7ebf\u6216\u8fde\u63a5\u5668<\/strong>\uff1a\u89e3\u51b3\u4efb\u4f55\u7535\u6c14\u95ee\u9898<\/li>\n<li><strong>\u51b2\u6d17\u5e76\u6e05\u6d01 DEF \u7cfb\u7edf<\/strong>\uff1a\u53bb\u9664\u6c61\u67d3\u7269\u6216\u7ed3\u6676<\/li>\n<li><strong>\u66f4\u65b0 ECM \u8f6f\u4ef6<\/strong>\uff1a\u5982\u679c\u5b58\u5728\u5df2\u77e5\u95ee\u9898<\/li>\n<li><strong>\u66f4\u6362 DEF \u55b7\u5c04\u5668<\/strong>\uff1a\u5982\u679c\u5835\u585e\u6216\u6545\u969c<\/li>\n<\/ol>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<ol>\n<li>\u4f7f\u7528\u6765\u81ea\u4fe1\u8a89\u826f\u597d\u6765\u6e90\u7684\u9ad8\u8d28\u91cf DEF<\/li>\n<li>\u4fdd\u6301\u9002\u5f53\u7684 DEF \u6db2\u4f4d<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u4efb\u4f55 DEF \u76f8\u5173\u7684\u8b66\u544a\u706f<\/li>\n<li>\u9075\u5faa\u5236\u9020\u5546\u63a8\u8350\u7684\u670d\u52a1\u95f4\u9694<\/li>\n<\/ol>\n<h2 id=\"repair-costs\">\u7ef4\u4fee\u8d39\u7528<\/h2>\n<p><strong>\u6ce8\u610f<\/strong>\uff1a\u8d39\u7528\u56e0\u5730\u533a\u3001\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u800c\u5f02\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7ec4\u4ef6<\/th>\n<th>\u9884\u8ba1\u8d39\u7528\uff08\u7f8e\u5143\uff09<\/th>\n<th>\u9884\u8ba1\u8d39\u7528\uff08\u6b27\u5143\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8fd8\u539f\u5242\u6cf5<\/td>\n<td>$300 &#8211; $800<\/td>\n<td>\u20ac250 &#8211; \u20ac675<\/td>\n<\/tr>\n<tr>\n<td>DEF \u55b7\u5c04\u5668<\/td>\n<td>$200 &#8211; $500<\/td>\n<td>\u20ac170 &#8211; \u20ac420<\/td>\n<\/tr>\n<tr>\n<td>\u8bca\u65ad\u8d39\u7528<\/td>\n<td>$100 &#8211; $200<\/td>\n<td>\u20ac85 &#8211; \u20ac170<\/td>\n<\/tr>\n<tr>\n<td>\u4eba\u5de5\uff082-4 \u5c0f\u65f6\uff09<\/td>\n<td>$200 &#8211; $400<\/td>\n<td>\u20ac170 &#8211; \u20ac340<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u603b\u7ef4\u4fee\u8d39\u7528\u901a\u5e38\u5728 500 \u5230 1500 \u7f8e\u5143 (\u20ac420 \u5230 \u20ac1260) \u4e4b\u95f4\u3002<\/p>\n<h2 id=\"related-issues-and-fault-codes\">\u76f8\u5173\u95ee\u9898\u548c\u6545\u969c\u4ee3\u7801<\/h2>\n<p>P20FB \u901a\u5e38\u4e0e\u4ee5\u4e0b\u4ee3\u7801\u4e00\u8d77\u51fa\u73b0\uff1a<\/p>\n<ul>\n<li>P20F5\uff1a\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u6a21\u5757<\/li>\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\/p203f-reductant-dosing-valve-calibration-values-not-learned\/\" title=\"P203F\uff1a\u8fd8\u539f\u5242\u6db2\u4f4d\u8fc7\u4f4e\">P203F\uff1a\u8fd8\u539f\u5242\u6db2\u4f4d\u8fc7\u4f4e<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p2047-reductant-injector-circuit-open\/\" title=\"P2047\uff1a\u8fd8\u539f\u5242\u55b7\u5c04\u5668\u7535\u8def\u5f00\u8def\">P2047\uff1a\u8fd8\u539f\u5242\u55b7\u5c04\u5668\u7535\u8def\u5f00\u8def<\/a><\/li>\n<\/ul>\n<h2 id=\"measurement-units\">\u6d4b\u91cf\u5355\u4f4d<\/h2>\n<ul>\n<li>DEF \u6cb9\u7bb1\u5bb9\u91cf\uff1a10-20 \u5347 (2.6-5.3 \u52a0\u4ed1)<\/li>\n<li>DEF \u6d88\u8017\u91cf\uff1a\u6bcf 1000 \u516c\u91cc\u5927\u7ea6 1 \u5347 (750 \u82f1\u91cc\u6bcf 1 \u5938\u8131)<\/li>\n<li>\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\uff1a-11\u00b0C \u81f3 32\u00b0C (12\u00b0F \u81f3 90\u00b0F)<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u53ca\u65f6\u5904\u7406 P20FB \u5e76\u7ef4\u62a4\u8f66\u8f86\u7684 SCR \u7cfb\u7edf\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u6700\u4f73\u6027\u80fd\u3001\u71c3\u6cb9\u6548\u7387\uff0c\u5e76\u7b26\u5408\u6392\u653e\u6cd5\u89c4\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-p20fb\">P20FB \u4ee3\u7801\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h2>\n<h3>P20FB \u53d1\u52a8\u673a\u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n<p>P20FB \u8868\u793a\u8fd8\u539f\u5242\u6cf5 &#8216;B&#8217; \u6027\u80fd\u95ee\u9898\uff0c\u6216\u8005\u6cf5\u5361\u5728\u5173\u95ed\u4f4d\u7f6e\u3002\u6b64\u4ee3\u7801\u4e0e\u67f4\u6cb9\u53d1\u52a8\u673a\u4e2d\u7684\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u76f8\u5173\u3002<\/p>\n<h3>P20FB \u4ee3\u7801\u7684\u7d27\u6025\u7a0b\u5ea6\u5982\u4f55\uff1f<\/h3>\n<p>\u867d\u7136 P20FB \u4e0d\u4f1a\u7acb\u5373\u5bfc\u81f4\u91cd\u5927\u95ee\u9898\uff0c\u4f46\u5e94\u5c3d\u5feb\u89e3\u51b3\u3002\u60a8\u53ef\u4ee5\u77ed\u9014\u9a7e\u9a76\uff0c\u4f46\u5e94\u5c3d\u5feb\u5b89\u6392\u7ef4\u4fee\uff0c\u4ee5\u9632\u6b62 SCR \u7cfb\u7edf\u635f\u574f\u5e76\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6cd5\u89c4\u3002<\/p>\n<h3>P20FB \u4ee3\u7801\u6d89\u53ca\u54ea\u4e9b\u7ec4\u4ef6\uff1f<\/h3>\n<p>\u4e3b\u8981\u6d89\u53ca\u7684\u7ec4\u4ef6\u5305\u62ec\u8fd8\u539f\u5242 (DEF\/AdBlue) \u6cf5\u3001DEF \u6db2\u3001SCR \u7cfb\u7edf\u548c\u53d1\u52a8\u673a\u63a7\u5236\u6a21\u5757 (ECM)\u3002<\/p>\n<h3>\u6211\u53ef\u4ee5\u7ee7\u7eed\u9a7e\u9a76\u5e26\u6709 P20FB \u4ee3\u7801\u7684\u8f66\u8f86\u5417\uff1f<\/h3>\n<p>\u53ef\u4ee5\uff0c\u60a8\u53ef\u4ee5\u77ed\u9014\u9a7e\u9a76\uff0c\u4f46\u5efa\u8bae\u907f\u514d\u957f\u9014\u65c5\u884c\uff0c\u5e76\u5c3d\u5feb\u89e3\u51b3\u95ee\u9898\uff0c\u4ee5\u9632\u6b62\u8fdb\u4e00\u6b65\u7684\u590d\u6742\u95ee\u9898\u3002<\/p>\n<h3>P20FB \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\u7535\u6c14\u95ee\u9898\u3001\u53d7\u6c61\u67d3\u7684 DEF \u6db2\u3001DEF \u7ba1\u7ebf\u6216\u55b7\u5c04\u5668\u5835\u585e\u4ee5\u53ca ECM \u8f6f\u4ef6\u95ee\u9898\u3002<\/p>\n<h3>P20FB \u4ee3\u7801\u5982\u4f55\u8bca\u65ad\uff1f<\/h3>\n<p>\u8bca\u65ad\u901a\u5e38\u5305\u62ec\u626b\u63cf\u5176\u4ed6\u4ee3\u7801\u3001\u68c0\u67e5 DEF 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title=\"P2047\">P2047<\/a>\uff0c\u5b83\u4eec\u90fd\u4e0e SCR \u7cfb\u7edf\u76f8\u5173\u3002<\/p>\n<h3>\u4fee\u590d P20FB \u95ee\u9898\u901a\u5e38\u9700\u8981\u591a\u957f\u65f6\u95f4\uff1f<\/h3>\n<p>\u4fee\u590d\u65f6\u95f4\u53ef\u80fd\u4e0d\u540c\uff0c\u4f46\u901a\u5e38\u9700\u8981 2-4 \u5c0f\u65f6\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u95ee\u9898\u548c\u8f66\u8f86\u3002<\/p>\n<h3>\u5ffd\u7565 P20FB \u4ee3\u7801\u4f1a\u5bfc\u81f4\u66f4\u6602\u8d35\u7684\u7ef4\u4fee\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u5ffd\u89c6\u8be5\u4ee3\u7801\u53ef\u80fd\u4f1a\u5bfc\u81f4 SCR \u7cfb\u7edf\u548c\u5176\u4ed6\u7ec4\u4ef6\u7684\u635f\u574f\uff0c\u5bfc\u81f4\u66f4\u6602\u8d35\u7684\u7ef4\u4fee\u8d39\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P20FB &#8211; Reductant Pump Control Circuit High The 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