{"id":287717,"date":"2024-10-23T09:54:58","date_gmt":"2024-10-23T09:54:58","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287717"},"modified":"2024-11-04T12:01:30","modified_gmt":"2024-11-04T12:01:30","slug":"p20fd-reductant-quality-sensor-circuit-range-performance","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20fd-reductant-quality-sensor-circuit-range-performance\/","title":{"rendered":"P20FD &#8211; \u8fd8\u539f\u5242\u8d28\u91cf\u4f20\u611f\u5668\u7535\u8def\u8303\u56f4\/\u6027\u80fd"},"content":{"rendered":"<h2 id=\"urgency-and-severity\">\u7d27\u6025\u6027\u548c\u4e25\u91cd\u6027<\/h2>\n<p>P20FD\u8bca\u65ad\u6545\u969c\u7801 (DTC) \u8868\u793a\u8f66\u8f86\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u4e2d\u7684\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\u51fa\u73b0\u95ee\u9898\u3002\u867d\u7136\u8be5\u95ee\u9898\u4e0d\u4f1a\u7acb\u5373\u9020\u6210\u4e25\u91cd\u5f71\u54cd\uff0c\u4f46\u5e94\u5c3d\u5feb\u5904\u7406\uff0c\u4ee5\u9632\u6b62\u5bf9\u6392\u653e\u7cfb\u7edf\u9020\u6210\u6f5c\u5728\u635f\u574f\uff0c\u5e76\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6cd5\u89c4\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u7ef4\u4fee\u8f66\u95f4\uff0cP20FD\u4ee3\u7801\u6700\u5e38\u51fa\u73b0\u5728\u6b27\u6d32\u67f4\u6cb9\u8f66\u4e0a\uff0c\u5c24\u5176\u662f\u5927\u4f17\u3001\u5b9d\u9a6c\u548c\u5954\u9a70\u7684\u8f66\u578b\u3002\u901a\u5e38\u4e0e\u67f4\u6cb9\u6392\u6c14\u6db2\uff08DEF\uff09\u7cfb\u7edf\u4e2d\u7684\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\u95ee\u9898\u76f8\u5173\u3002\u6211\u4eec\u53d1\u73b0\u8be5\u4ee3\u7801\u66f4\u5e38\u89c1\u4e8e\u9ad8\u91cc\u7a0b\u6570\u6216\u66b4\u9732\u4e8e\u6076\u52a3\u73af\u5883\u6761\u4ef6\u7684\u8f66\u8f86\u3002\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u95ee\u9898\u662f\u7531\u7535\u6c14\u8fde\u63a5\u8150\u8680\u6216\u8fd8\u539f\u5242\u6cf5\u6545\u969c\u5f15\u8d77\u7684\uff0c\u800c\u4e0d\u662fDEF\u672c\u8eab\u7684\u95ee\u9898\u3002\u6e05\u9664\u6545\u969c\u4ee3\u7801\u5e76\u66f4\u6362\u6cf5\u6216\u4fee\u590d\u7535\u7ebf\u901a\u5e38\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u6211\u4eec\u603b\u662f\u8fdb\u884c\u5f7b\u5e95\u7684\u8bca\u65ad\uff0c\u4ee5\u6392\u9664\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u4e2d\u66f4\u590d\u6742\u7684\u95ee\u9898\u3002<\/p>\n<\/div>\n<p><strong>\u4e25\u91cd\u6027\u7ea7\u522b\uff1a<\/strong>\u4e2d\u7b49<br \/>\n<strong>\u7ee7\u7eed\u9a7e\u9a76\uff1a<\/strong>\u77ed\u8ddd\u79bb\u9a7e\u9a76\u901a\u5e38\u5b89\u5168\uff0c\u4f46\u4e0d\u5efa\u8bae\u957f\u65f6\u95f4\u9a7e\u9a76<br \/>\n<strong>\u7ecf\u9500\u5546\u8bbf\u95ee\uff1a<\/strong>\u4e0d\u9700\u8981\u7acb\u5373\u524d\u5f80\uff0c\u4f46\u5e94\u5c3d\u5feb\u5b89\u6392<\/p>\n<h2 id=\"code-details\">\u4ee3\u7801\u8be6\u60c5<\/h2>\n<p>P20FD\u7684\u5b9a\u4e49\u662f\u201c\u8fd8\u539f\u5242\u6cf5\u2018B\u2019\u63a7\u5236\u7535\u8def\u7535\u538b\u9ad8\u201d\u3002\u6b64\u4ee3\u7801\u4e3a\uff1a<\/p>\n<ul>\n<li>\u4e0e\u52a8\u529b\u7cfb\u7edf\u76f8\u5173 (P)<\/li>\n<li>\u5236\u9020\u5546\u63a7\u5236 (2)<\/li>\n<li>\u4e0e\u71c3\u6599\u548c\u7a7a\u6c14\u8ba1\u91cf\u8f85\u52a9\u6392\u653e\u63a7\u5236\u76f8\u5173 (0)<\/li>\n<\/ul>\n<p>\u8be5\u4ee3\u7801\u901a\u5e38\u662f\u5236\u9020\u5546\u7279\u5b9a\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5176\u5177\u4f53\u89e3\u91ca\u53ef\u80fd\u56e0\u4e0d\u540c\u7684\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u800c\u7565\u6709\u4e0d\u540c\u3002<\/p>\n<h2 id=\"components-involved\">\u76f8\u5173\u90e8\u4ef6<\/h2>\n<p>\u4e3b\u8981\u76f8\u5173\u90e8\u4ef6\u662f\u8fd8\u539f\u5242\u6cf5\u2018B\u2019\uff0c\u5b83\u662f\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u7684\u4e00\u90e8\u5206\uff0c\u7528\u4e8e\u67f4\u6cb9\u53d1\u52a8\u673a\u51cf\u5c11\u6c2e\u6c27\u5316\u7269\uff08NOx\uff09\u6392\u653e\u3002<\/p>\n<p><strong>\u8fd8\u539f\u5242\u6cf5\u2018B\u2019\u7684\u529f\u80fd\uff1a<\/strong><\/p>\n<ul>\n<li>\u5411SCR\u50ac\u5316\u5242\u8f93\u9001\u67f4\u6cb9\u6392\u6c14\u6db2 (DEF)<\/li>\n<li>\u7cbe\u786e\u63a7\u5236DEF\u55b7\u5c04\uff0c\u4ee5\u4f18\u5316NOx\u51cf\u5c11<\/li>\n<\/ul>\n<p><strong>\u76f8\u5173\u7684SCR\u7cfb\u7edf\u90e8\u4ef6\uff1a<\/strong><\/p>\n<ul>\n<li>DEF\u50a8\u6db2\u7f50<\/li>\n<li>DEF\u55b7\u5c04\u5668<\/li>\n<li>SCR\u50ac\u5316\u5242<\/li>\n<li>NOx\u4f20\u611f\u5668<\/li>\n<\/ul>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<ol>\n<li>\n<p>\u6cf5\u63a7\u5236\u7535\u8def\u4e2d\u7684\u7535\u6c14\u95ee\u9898\uff08\u6700\u5e38\u89c1\uff09<\/p>\n<ul>\n<li>\u77ed\u8def\u81f3\u7535\u6e90<\/li>\n<li>\u7ebf\u675f\u635f\u574f<\/li>\n<li>\u8fde\u63a5\u5668\u8150\u8680<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8fd8\u539f\u5242\u6cf5\u6545\u969c<\/p>\n<\/li>\n<li>DEF\u8d28\u91cf\u95ee\u9898\u6216\u6c61\u67d3<\/li>\n<li>ECU\u8f6f\u4ef6\u95ee\u9898<\/li>\n<\/ol>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<h3 id=\"tools-required-\">\u6240\u9700\u5de5\u5177\uff1a<\/h3>\n<ul>\n<li>OBD-II\u626b\u63cf\u4eea<\/li>\n<li>\u6570\u5b57\u4e07\u7528\u8868<\/li>\n<li>\u7279\u5b9a\u8f66\u8f86\u578b\u53f7\u7684\u7535\u8def\u56fe<\/li>\n<\/ul>\n<h3 id=\"steps-\">\u6b65\u9aa4\uff1a<\/h3>\n<ol>\n<li>\u8fde\u63a5OBD-II\u626b\u63cf\u4eea\u5e76\u786e\u8ba4P20FD\u4ee3\u7801<\/li>\n<li>\u68c0\u67e5\u662f\u5426\u6709\u4efb\u4f55\u76f8\u5173\u7684\u4ee3\u7801\uff08\u4f8b\u5982P20FA\uff0cP20FC\uff09<\/li>\n<li>\u68c0\u67e5DEF\u7cfb\u7edf\u662f\u5426\u6709\u53ef\u89c1\u7684\u635f\u574f\u6216\u6cc4\u6f0f<\/li>\n<li>\u68c0\u67e5DEF\u7684\u8d28\u91cf\u548c\u6db2\u4f4d<\/li>\n<li>\u68c0\u67e5\u7535\u7ebf\u548c\u8fde\u63a5\u5668\u662f\u5426\u635f\u574f\u6216\u8150\u8680<\/li>\n<li>\u4f7f\u7528\u4e07\u7528\u8868\u6d4b\u8bd5\u8fd8\u539f\u5242\u6cf5\u7535\u8def\uff1a\n<ul>\n<li>\u68c0\u67e5\u662f\u5426\u6709\u6b63\u786e\u7684\u7535\u538b\u4f9b\u5e94\uff08\u901a\u5e38\u4e3a12V\uff09<\/li>\n<li>\u6d4b\u91cf\u63a7\u5236\u7535\u8def\u7684\u7535\u963b\uff08\u53c2\u8003\u5236\u9020\u5546\u89c4\u683c\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u4f7f\u7528\u626b\u63cf\u4eea\u7684\u53cc\u5411\u63a7\u5236\u529f\u80fd\u6d4b\u8bd5\u8fd8\u539f\u5242\u6cf5\u7684\u64cd\u4f5c<\/li>\n<\/ol>\n<h2 id=\"solutions\">\u89e3\u51b3\u65b9\u6848<\/h2>\n<ol>\n<li>\u4fee\u590d\u6216\u66f4\u6362\u635f\u574f\u7684\u7535\u7ebf<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362\u8150\u8680\u7684\u8fde\u63a5\u5668<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u6cf5<\/li>\n<li>\u5982\u679c\u5df2\u77e5\u5b58\u5728\u8f6f\u4ef6\u95ee\u9898\uff0c\u8bf7\u66f4\u65b0ECU\u8f6f\u4ef6<\/li>\n<li>\u5982\u679c\u53d1\u73b0\u6c61\u67d3\uff0c\u8bf7\u51b2\u6d17\u5e76\u91cd\u65b0\u52a0\u6ce8DEF\u7cfb\u7edf<\/li>\n<\/ol>\n<h2 id=\"prevention\">\u9884\u9632\u63aa\u65bd<\/h2>\n<ul>\n<li>\u5b9a\u671f\u7ef4\u62a4DEF\u7cfb\u7edf<\/li>\n<li>\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684DEF\u6db2\u4f53<\/li>\n<li>\u4fdd\u62a4\u7ebf\u675f\u514d\u53d7\u73af\u5883\u635f\u5bb3<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u6545\u969c\u6307\u793a\u706f<\/li>\n<\/ul>\n<h2 id=\"cost-analysis\">\u6210\u672c\u5206\u6790<\/h2>\n<p>\u4f30\u8ba1\u7ef4\u4fee\u6210\u672c\uff08\u7f8e\u5143\/\u6b27\u5143\uff09\uff1a<\/p>\n<ul>\n<li>\u7535\u7ebf\u7ef4\u4fee\uff1a$100-300 \/ \u20ac85-255<\/li>\n<li>\u8fde\u63a5\u5668\u66f4\u6362\uff1a$50-150 \/ \u20ac42-127<\/li>\n<li>\u8fd8\u539f\u5242\u6cf5\u66f4\u6362\uff1a$300-800 \/ \u20ac255-680<\/li>\n<li>ECU\u8f6f\u4ef6\u66f4\u65b0\uff1a$100-200 \/ \u20ac85-170<\/li>\n<\/ul>\n<h2 id=\"diy-repair-guide\">DIY\u7ef4\u4fee\u6307\u5357<\/h2>\n<p><strong>\u8b66\u544a\uff1a<\/strong>\u4ec5\u5728\u60a8\u6709\u6c7d\u8f66\u7535\u6c14\u7cfb\u7edf\u7ecf\u9a8c\u7684\u60c5\u51b5\u4e0b\u5c1d\u8bd5\u3002<\/p>\n<ol>\n<li>\u65ad\u5f00\u8f66\u8f86\u7535\u6c60<\/li>\n<li>\u627e\u5230\u8fd8\u539f\u5242\u6cf5\uff08\u53c2\u89c1\u7ef4\u4fee\u624b\u518c\uff09<\/li>\n<li>\u4f7f\u7528\u4e07\u7528\u8868\u68c0\u67e5\u5e76\u6d4b\u8bd5\u7535\u7ebf<\/li>\n<li>\u5982\u679c\u6cf5\u6545\u969c\uff0c\u8bf7\u66f4\u6362\uff08\u9075\u5faa\u5236\u9020\u5546\u7684\u62c6\u5378\/\u5b89\u88c5\u7a0b\u5e8f\uff09<\/li>\n<li>\u6e05\u9664DTC\u5e76\u6267\u884c\u7cfb\u7edf\u91cd\u65b0\u5b66\u4e60\u7a0b\u5e8f<\/li>\n<\/ol>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20fa-reductant-pump-control-circuit-low\/\" title=\"P20FA\uff08\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\uff09\">P20FA\uff08\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\uff09<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20fc-reductant-quality-sensor-circuit\/\" title=\"P20FC\uff08\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09\">P20FC\uff08\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09<\/a><\/li>\n<li>U02A2\uff08\u4e0e\u8fd8\u539f\u5242\u63a7\u5236\u6a21\u5757\u5931\u53bb\u901a\u4fe1\uff09<\/li>\n<\/ul>\n<h2 id=\"technical-specifications\">\u6280\u672f\u89c4\u683c<\/h2>\n<ul>\n<li>\u5178\u578b\u7684\u8fd8\u539f\u5242\u6cf5\u5de5\u4f5c\u7535\u538b\uff1a12V DC<\/li>\n<li>DEF\u6d41\u91cf\uff1a0.1 &#8211; 1.5\u5347\/\u5206\u949f\uff08\u53d6\u51b3\u4e8e\u53d1\u52a8\u673a\u5927\u5c0f\u548c\u8d1f\u8f7d\uff09<\/li>\n<li>DEF\u51bb\u7ed3\u70b9\uff1a-11\u00b0C (12\u00b0F)<\/li>\n<\/ul>\n<p>\u8bf7\u8bb0\u4f4f\uff0c\u59cb\u7ec8\u53c2\u8003\u7279\u5b9a\u8f66\u8f86\u7684\u7ef4\u4fee\u624b\u518c\uff0c\u4ee5\u83b7\u53d6\u7cbe\u786e\u7684\u89c4\u683c\u548c\u7a0b\u5e8f\uff0c\u56e0\u4e3a\u4e0d\u540c\u7684\u54c1\u724c\u548c\u578b\u53f7\u53ef\u80fd\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h2 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