{"id":287673,"date":"2024-10-23T08:08:14","date_gmt":"2024-10-23T08:08:14","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287673"},"modified":"2024-11-04T11:22:45","modified_gmt":"2024-11-04T11:22:45","slug":"p20ba-reductant-heater-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20ba-reductant-heater-control-circuit-low\/","title":{"rendered":"P20BA &#8211; \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4f4e"},"content":{"rendered":"<h2 id=\"code-urgency-and-immediate-actions\">\u4ee3\u7801\u7d27\u6025\u6027\u548c\u7acb\u5373\u91c7\u53d6\u7684\u63aa\u65bd<\/h2>\n<p>P20BA \u4ee3\u7801\u88ab\u8ba4\u4e3a\u662f\u4e25\u91cd\u95ee\u9898\uff0c\u5e94\u8be5\u5c3d\u5feb\u89e3\u51b3\u3002\u6b64\u8bca\u65ad\u6545\u969c\u4ee3\u7801 (DTC) \u8868\u793a\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u4e2d\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u7684\u6027\u80fd\u51fa\u73b0\u6545\u969c\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u770b\u5230 P20BA \u4ee3\u7801\u51fa\u73b0\u5728\u5404\u79cd\u8f66\u8f86\u54c1\u724c\u4e2d\uff0c\u5c24\u5176\u662f\u5728\u6b27\u6d32\u67f4\u6cb9\u8f66\u578b\u5982\u5927\u4f17\u3001\u5b9d\u9a6c\u548c\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u4e2d\u3002\u8fd9\u4e9b\u8f66\u8f86\u901a\u5e38\u7ecf\u5386 DEF\uff08\u67f4\u6cb9\u6392\u653e\u6db2\uff09\u52a0\u70ed\u7cfb\u7edf\u7684\u95ee\u9898\uff0c\u4ece\u800c\u89e6\u53d1\u6b64\u4ee3\u7801\u3002\u6839\u636e\u6211\u4eec\u7684\u7ecf\u9a8c\uff0c\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\u901a\u5e38\u662f\u6545\u969c\u7684 DEF \u52a0\u70ed\u5668\u6216\u76f8\u5173\u7684\u63a5\u7ebf\u95ee\u9898\u3002\u867d\u7136\u6211\u4eec\u5728\u4e00\u4e9b\u7f8e\u6d32\u548c\u4e9a\u6d32\u7684\u67f4\u6cb9\u8f66\u8f86\u4e2d\u4e5f\u9047\u5230\u8fc7\u6b64\u4ee3\u7801\uff0c\u4f46\u6b27\u6d32\u8f66\u578b\u4f3c\u4e4e\u66f4\u5bb9\u6613\u53d1\u751f\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u5176\u66f4\u590d\u6742\u7684\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u3002\u89e3\u51b3\u95ee\u9898\u901a\u5e38\u6d89\u53ca\u66f4\u6362 DEF \u52a0\u70ed\u5668\u603b\u6210\u6216\u4fee\u590d\u53d7\u635f\u7684\u63a5\u7ebf\uff0c\u8fd9\u5728\u8c6a\u534e\u6b27\u6d32\u6c7d\u8f66\u7d27\u51d1\u7684\u53d1\u52a8\u673a\u8231\u4e2d\u53ef\u80fd\u9700\u8981\u8f83\u591a\u7684\u5de5\u4f5c\u91cf\u3002<\/p>\n<\/div>\n<p>\u867d\u7136\u53ef\u4ee5\u5c06\u8f66\u8f86\u5f00\u5230\u9644\u8fd1\u7684\u4fee\u7406\u5e97\uff0c\u4f46\u4e0d\u5efa\u8bae\u957f\u65f6\u95f4\u9a7e\u9a76\u3002SCR \u7cfb\u7edf\u53ef\u80fd\u4f1a\u5931\u6548\uff0c\u5bfc\u81f4\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u548c\u6392\u653e\u589e\u52a0\u3002\u5efa\u8bae\u5c3d\u5feb\u8ba9\u5408\u683c\u6280\u5e08\u68c0\u67e5\u8f66\u8f86\uff0c\u4ee5\u9632\u6b62\u50ac\u5316\u8f6c\u6362\u5668\u635f\u574f\u5e76\u786e\u4fdd\u7b26\u5408\u6392\u653e\u6cd5\u89c4\u3002<\/p>\n<h2 id=\"detailed-code-information\">\u4ee3\u7801\u8be6\u7ec6\u4fe1\u606f<\/h2>\n<p>P20BA \u662f\u9002\u7528\u4e8e\u81ea 1996 \u5e74\u4ee5\u6765\u5236\u9020\u7684\u67f4\u6cb9 OBD-II \u8f66\u8f86\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u798f\u7279\u3001\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u7b49\u54c1\u724c\u3002\u8be5\u4ee3\u7801\u4e0e\u8fd8\u539f\u5242\u52a0\u70ed\u5668 &#8220;A&#8221; \u63a7\u5236\u7535\u8def\u7684\u6027\u80fd\u76f8\u5173\u3002<\/p>\n<p>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u662f SCR \u7cfb\u7edf\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u8d1f\u8d23\u51cf\u5c11\u67f4\u6cb9\u53d1\u52a8\u673a\u4e2d\u7684\u6709\u5bb3\u6c2e\u6c27\u5316\u7269 (NOx) \u6392\u653e\u3002\u52a0\u70ed\u5668\u7684\u4e3b\u8981\u529f\u80fd\u662f\u52a0\u70ed\u67f4\u6cb9\u6392\u653e\u6db2 (DEF)\uff0c\u4ee5\u9632\u6b62\u5176\u5728\u4f4e\u6e29\u4e0b\u7ed3\u6676\uff0c\u786e\u4fdd SCR \u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>\u89e6\u53d1 P20BA \u4ee3\u7801\u7684\u51e0\u4e2a\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668<\/li>\n<li>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u8def\u4e2d\u7684\u63a5\u7ebf\u635f\u574f\u6216\u8150\u8680<\/li>\n<li>\u6545\u969c\u7684\u9884\u70ed\u585e\u63a7\u5236\u6a21\u5757<\/li>\n<li>\u6545\u969c\u7684 DEF \u6cf5<\/li>\n<li>DEF \u6cb9\u7bb1\u6216\u6db2\u4f4d\u4f20\u611f\u5668\u95ee\u9898<\/li>\n<li>\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u4e2d\u7684\u8f6f\u4ef6\u6216\u7f16\u7a0b\u9519\u8bef<\/li>\n<\/ol>\n<h2 id=\"diagnostic-procedure\">\u8bca\u65ad\u7a0b\u5e8f<\/h2>\n<p>\u8981\u8bca\u65ad P20BA \u4ee3\u7801\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol>\n<li>\u8fde\u63a5\u8bca\u65ad\u626b\u63cf\u4eea\u4ee5\u68c0\u7d22\u6240\u6709\u5b58\u50a8\u7684\u4ee3\u7801\u548c\u51bb\u7ed3\u5e27\u6570\u636e\u3002<\/li>\n<li>\u76ee\u89c6\u68c0\u67e5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7cfb\u7edf\u7684\u7ebf\u675f\u548c\u8fde\u63a5\u5668\u662f\u5426\u6709\u635f\u574f\u6216\u8150\u8680\u3002<\/li>\n<li>\u4f7f\u7528\u6570\u5b57\u7535\u538b\/\u6b27\u59c6\u8868 (DVOM) \u6d4b\u8bd5 SCR \u63a7\u5236\u7cfb\u7edf\u7684\u7535\u6e90\u7535\u8def\u548c\u63a5\u5730\u7535\u8def\u3002<\/li>\n<li>\u4f7f\u7528\u626b\u63cf\u5de5\u5177\u6fc0\u6d3b\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5e76\u6d4b\u91cf\u8f93\u51fa\u63a7\u5236\u7535\u8def\u7535\u538b\u3002<\/li>\n<li>\u4f7f\u7528 DVOM \u6d4b\u8bd5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5143\u4ef6\u7684\u7535\u963b\u3002<\/li>\n<li>\u68c0\u67e5\u76f8\u5173\u7684\u6280\u672f\u670d\u52a1\u516c\u544a (TSB)\uff0c\u4ee5\u4e86\u89e3\u7279\u5b9a\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u7684\u5e38\u89c1\u95ee\u9898\u3002<\/li>\n<\/ol>\n<p>\u6240\u9700\u5de5\u5177\uff1aOBD-II \u626b\u63cf\u4eea\uff0c\u6570\u5b57\u7535\u538b\/\u6b27\u59c6\u8868\uff0c\u7279\u5b9a\u8f66\u8f86\u7684\u8bca\u65ad\u4fe1\u606f\u3002<\/p>\n<p>\u5b89\u5168\u9884\u9632\u63aa\u65bd\uff1a\u5728\u5904\u7406\u6392\u6c14\u7cfb\u7edf\u4e4b\u524d\uff0c\u786e\u4fdd\u53d1\u52a8\u673a\u5df2\u51b7\u5374\uff0c\u5e76\u7a7f\u6234\u9002\u5f53\u7684\u4e2a\u4eba\u9632\u62a4\u88c5\u5907\u3002<\/p>\n<h2 id=\"solutions-and-repairs\">\u89e3\u51b3\u65b9\u6848\u4e0e\u4fee\u590d<\/h2>\n<p>\u6839\u636e\u8bca\u65ad\u7ed3\u679c\uff0c\u6f5c\u5728\u7684\u4fee\u590d\u65b9\u6848\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u603b\u6210<\/li>\n<li>\u4fee\u590d\u6216\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf\u548c\u8fde\u63a5\u5668<\/li>\n<li>\u66f4\u6362\u9884\u70ed\u585e\u63a7\u5236\u6a21\u5757<\/li>\n<li>\u5982\u679c\u53d1\u73b0\u7f16\u7a0b\u9519\u8bef\uff0c\u66f4\u65b0 PCM \u8f6f\u4ef6<\/li>\n<\/ol>\n<p>\u5bf9\u4e8e DEF \u52a0\u70ed\u5668\u7684\u66f4\u6362\uff1a<\/p>\n<ol>\n<li>\u6392\u7a7a DEF \u6cb9\u7bb1<\/li>\n<li>\u62c6\u5378 DEF \u6cb9\u7bb1\uff08\u53ef\u80fd\u9700\u8981\u964d\u4f4e\u6392\u6c14\u7cfb\u7edf\uff09<\/li>\n<li>\u66f4\u6362\u52a0\u70ed\u5668\u603b\u6210<\/li>\n<li>\u91cd\u65b0\u5b89\u88c5\u6cb9\u7bb1\u5e76\u7528\u65b0\u9c9c\u7684 DEF \u52a0\u6ce8<\/li>\n<\/ol>\n<h2 id=\"prevention-strategies\">\u9884\u9632\u7b56\u7565<\/h2>\n<p>\u4e3a\u4e86\u907f\u514d P20BA \u4ee3\u7801\u7684\u51fa\u73b0\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF \u5e76\u786e\u4fdd DEF \u6db2\u4f4d\u5145\u8db3<\/li>\n<li>\u5b9a\u671f\u7ef4\u62a4 SCR \u7cfb\u7edf<\/li>\n<li>\u53ca\u65f6\u5904\u7406\u4efb\u4f55\u4e0e DEF \u76f8\u5173\u7684\u8b66\u793a\u706f<\/li>\n<li>\u907f\u514d\u5728\u6781\u51b7\u6761\u4ef6\u4e0b\u957f\u65f6\u95f4\u6020\u901f<\/li>\n<\/ol>\n<p>\u6ce8\u610f\u65e9\u671f\u8b66\u544a\u4fe1\u53f7\uff0c\u4f8b\u5982\u71c3\u6cb9\u6548\u7387\u4e0b\u964d\u6216\u8f7b\u5fae\u7684\u52a8\u529b\u635f\u5931\u3002<\/p>\n<h2 id=\"cost-analysis\">\u6210\u672c\u5206\u6790<\/h2>\n<p>\u4f30\u8ba1\u7684\u7ef4\u4fee\u8d39\u7528\uff1a<\/p>\n<ul>\n<li>\u96f6\u4ef6\uff1a300-600 \u7f8e\u5143\uff08250-500 \u6b27\u5143\uff09\u7528\u4e8e DEF \u52a0\u70ed\u5668\u603b\u6210<\/li>\n<li>\u4eba\u5de5\uff1a200-400 \u7f8e\u5143\uff08170-340 \u6b27\u5143\uff09\u7528\u4e8e 2-3 \u5c0f\u65f6\u7684\u5de5\u4f5c<\/li>\n<\/ul>\n<p>\u603b\u8d39\u7528\u8303\u56f4\uff1a500-1000 \u7f8e\u5143\uff08420-840 \u6b27\u5143\uff09<\/p>\n<h2 id=\"diy-repair-guide\">DIY \u4fee\u590d\u6307\u5357<\/h2>\n<p>\u5bf9\u4e8e\u6709\u7ecf\u9a8c\u7684\u6280\u5e08\uff1a<\/p>\n<ol>\n<li>\u62ac\u5347\u5e76\u56fa\u5b9a\u8f66\u8f86<\/li>\n<li>\u6392\u7a7a DEF \u6cb9\u7bb1<\/li>\n<li>\u65ad\u5f00\u7535\u6c14\u8fde\u63a5\u548c DEF \u7ba1\u7ebf<\/li>\n<li>\u62c6\u4e0b DEF \u6cb9\u7bb1\u7684\u5b89\u88c5\u87ba\u6813<\/li>\n<li>\u5c0f\u5fc3\u5730\u964d\u4f4e\u6cb9\u7bb1<\/li>\n<li>\u62c6\u4e0b\u65e7\u7684\u52a0\u70ed\u5668\u603b\u6210<\/li>\n<li>\u5b89\u88c5\u65b0\u7684\u52a0\u70ed\u5668\uff0c\u786e\u4fdd\u5bc6\u5c01\u826f\u597d<\/li>\n<li>\u91cd\u65b0\u5b89\u88c5\u6cb9\u7bb1\u5e76\u91cd\u65b0\u8fde\u63a5\u6240\u6709\u7ba1\u7ebf\u548c\u7535\u6c14\u8fde\u63a5<\/li>\n<li>\u91cd\u65b0\u52a0\u6ce8\u65b0\u9c9c\u7684 DEF \u5e76\u6e05\u9664\u6545\u969c\u4ee3\u7801<\/li>\n<\/ol>\n<p>\u6240\u9700\u5de5\u5177\uff1a\u5343\u65a4\u9876\uff0c\u652f\u67b6\uff0c\u5957\u7b52\u6273\u624b\uff0c\u9002\u7528\u4e8e DEF \u7684\u6392\u6c34\u76d8\uff0c\u626d\u77e9\u6273\u624b<\/p>\n<p>\u5b89\u5168\u63aa\u65bd\uff1a\u4f7f\u7528\u9002\u5f53\u7684\u62ac\u5347\u6280\u672f\uff0c\u4f69\u6234\u624b\u5957\u548c\u62a4\u76ee\u955c\uff0c\u5e76\u5728\u901a\u98ce\u826f\u597d\u7684\u533a\u57df\u5de5\u4f5c\u3002<\/p>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<p>\u5e38\u89c1\u7684\u4f34\u968f\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>DEF \u7ed3\u6676<\/li>\n<li>SCR \u7cfb\u7edf\u6548\u7387\u4f4e\u4e0b<\/li>\n<li>\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d<\/li>\n<\/ul>\n<p>\u76f8\u5173\u6545\u969c\u4ee3\u7801\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p204f-reductant-system-performance\/\" title=\"P204F\uff08\u8fd8\u539f\u5242\u7cfb\u7edf\u6027\u80fd\uff09\">P204F\uff08\u8fd8\u539f\u5242\u7cfb\u7edf\u6027\u80fd\uff09<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20b9-reductant-heater-control-circuit-open\/\" title=\"P20B9\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u5f00\u8def\uff09\">P20B9\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u5f00\u8def\uff09<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20bb-reductant-heater-control-circuit-high\/\" title=\"P20BB\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09\">P20BB\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09<\/a><\/li>\n<\/ul>\n<p>\u901a\u8fc7\u53ca\u65f6\u5f7b\u5e95\u5730\u5904\u7406 P20BA \u4ee3\u7801\uff0c\u6280\u5e08\u53ef\u4ee5\u786e\u4fdd SCR \u7cfb\u7edf\u7684\u6700\u4f73\u6027\u80fd\uff0c\u4fdd\u6301\u6392\u653e\u6cd5\u89c4\u7684\u5408\u89c4\u6027\uff0c\u5e76\u9632\u6b62\u5173\u952e\u53d1\u52a8\u673a\u90e8\u4ef6\u7684\u6f5c\u5728\u635f\u574f\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-p20ba\">\u5173\u4e8e P20BA \u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>P20BA 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\u4ee3\u7801\u7684\u5e38\u89c1\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5e38\u89c1\u75c7\u72b6\u5305\u62ec\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u3001\u71c3\u6cb9\u6d88\u8017\u589e\u52a0\u4ee5\u53ca\u53d1\u52a8\u673a\u6545\u969c\u706f\u53ef\u80fd\u70b9\u4eae\u3002<\/p>\n<h3>P20BA \u4ee3\u7801\u662f\u5426\u7279\u5b9a\u4e8e\u67d0\u4e9b\u8f66\u8f86\u54c1\u724c\uff1f<\/h3>\n<p>\u4e0d\u662f\uff0c\u5b83\u662f\u9002\u7528\u4e8e\u8bb8\u591a\u67f4\u6cb9 OBD-II \u8f66\u8f86\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u6db5\u76d6\u798f\u7279\u3001\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u7b49\u54c1\u724c\u3002<\/p>\n<h3>P20BA \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) \u52a0\u70ed\u5668\u3001\u5176\u63a7\u5236\u7535\u8def\u4ee5\u53ca\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM)\u3002<\/p>\n<h3>\u643a\u5e26 P20BA 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\u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u867d\u7136\u6709\u7ecf\u9a8c\u7684\u6280\u5e08\u53ef\u4ee5\u6267\u884c\u4fee\u590d\uff0c\u4f46\u7531\u4e8e SCR \u7cfb\u7edf\u7684\u590d\u6742\u6027\u548c\u6f5c\u5728\u7684\u5b89\u5168\u9690\u60a3\uff0c\u901a\u5e38\u6700\u597d\u4ea4\u7ed9\u4e13\u4e1a\u4eba\u58eb\u5904\u7406\u3002<\/p>\n<h3>\u4fee\u590d P20BA \u4ee3\u7801\u95ee\u9898\u7684\u5178\u578b\u6210\u672c\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u7ef4\u4fee\u8d39\u7528\u901a\u5e38\u5728 500 \u5230 1000 \u7f8e\u5143\uff08420 \u5230 840 \u6b27\u5143\uff09\u4e4b\u95f4\uff0c\u5305\u62ec\u96f6\u4ef6\u548c\u4eba\u5de5\u3002<\/p>\n<h3>\u5982\u4f55\u9884\u9632 P20BA \u4ee3\u7801\u7684\u51fa\u73b0\uff1f<\/h3>\n<p>\u5b9a\u671f\u7ef4\u62a4 SCR \u7cfb\u7edf\uff0c\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684 DEF\uff0c\u5e76\u53ca\u65f6\u5904\u7406\u8b66\u793a\u706f\u53ef\u4ee5\u5e2e\u52a9\u9632\u6b62 P20BA \u4ee3\u7801\u7684\u51fa\u73b0\u3002<\/p>\n<h3>P20BA \u662f\u5426\u6709\u76f8\u5173\u4ee3\u7801\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u76f8\u5173\u4ee3\u7801\u5305\u62ec P204F\uff08\u8fd8\u539f\u5242\u7cfb\u7edf\u6027\u80fd\uff09\u3001<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20b9-reductant-heater-control-circuit-open\/\" title=\"P20B9\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u5f00\u8def\uff09\">P20B9\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u5f00\u8def\uff09<\/a>\u548c <a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p20bb-reductant-heater-control-circuit-high\/\" title=\"P20BB\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09\">P20BB\uff08\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u4f4e\u7535\u538b\uff09<\/a>\u3002<\/p>\n<h3>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u529f\u80fd\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u4f5c\u7528\u662f\u52a0\u70ed\u67f4\u6cb9\u6392\u653e\u6db2 (DEF)\uff0c\u9632\u6b62\u5176\u5728\u4f4e\u6e29\u4e0b\u7ed3\u6676\uff0c\u786e\u4fdd SCR \u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<h3>\u6781\u7aef\u5929\u6c14\u6761\u4ef6\u4f1a\u89e6\u53d1 P20BA \u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u6781\u51b7\u5929\u6c14\u53ef\u80fd\u4f1a\u5f71\u54cd\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u6027\u80fd\uff0c\u4ece\u800c\u6709\u65f6\u4f1a\u89e6\u53d1\u6b64\u4ee3\u7801\u3002<\/p>\n<h3>P20BA \u4ee3\u7801\u4f1a\u81ea\u884c\u6e05\u9664\u5417\uff1f<\/h3>\n<p>\u4e0d\u592a\u53ef\u80fd\u3002\u5373\u4f7f\u4ee3\u7801\u5728\u6e05\u9664\u540e\u4e0d\u4f1a\u7acb\u5373\u91cd\u65b0\u51fa\u73b0\uff0c\u9664\u975e\u95ee\u9898\u5f97\u5230\u59a5\u5584\u89e3\u51b3\uff0c\u5426\u5219\u5b83\u5f88\u53ef\u80fd\u4f1a\u518d\u6b21\u51fa\u73b0\u3002<\/p>\n<h3>P20BA \u4ee3\u7801\u5982\u4f55\u5f71\u54cd\u6392\u653e\uff1f<\/h3>\n<p>\u5b83\u53ef\u80fd\u5bfc\u81f4\u6c2e\u6c27\u5316\u7269 (NOx) 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