{"id":287674,"date":"2024-10-23T08:08:11","date_gmt":"2024-10-23T08:08:11","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=287674"},"modified":"2024-10-23T08:08:34","modified_gmt":"2024-10-23T08:08:34","slug":"p20bb-reductant-heater-control-circuit-high","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/p20bb-reductant-heater-control-circuit-high\/","title":{"rendered":"P20BB – \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u63a7\u5236\u7535\u8def\u9ad8"},"content":{"rendered":"

P20BB: Reductant Heater ‘A’ Control Circuit High<\/h2>\n

The P20BB diagnostic trouble code (DTC) indicates that the powertrain control module (PCM) has detected insufficient voltage in the control circuit for the onboard reductant heater ‘A’. This code is primarily associated with diesel engines equipped with selective catalytic reduction (SCR) systems.<\/p>\n

\n

\u6839\u636e\u6211\u4eec\u7684\u7ecf\u9a8c\uff0cP20BB\u4ee3\u7801\u5728\u5404\u79cd\u6b27\u6d32\u67f4\u6cb9\u8f66\u8f86\u4e2d\u76f8\u5bf9\u5e38\u89c1\uff0c\u7279\u522b\u662f\u5728\u5927\u4f17\u3001\u5b9d\u9a6c\u548c\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u7684\u8f66\u578b\u4e2d\u3002\u6211\u4eec\u6700\u5e38\u770b\u5230\u5b83\u51fa\u73b0\u5728\u67f4\u6cb9\u53d1\u52a8\u673a\u7684VW Touareg\u548cBMW X5\u8f66\u578b\u4e2d\u3002\u95ee\u9898\u901a\u5e38\u6e90\u4e8e\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u6216DEF\u7cfb\u7edf\u4e2d\u7684\u63a5\u7ebf\u95ee\u9898\u3002\u5728\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53d1\u73b0\u66f4\u6362\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7ec4\u4ef6\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u6709\u65f6\u9700\u8981\u4fee\u7406\u635f\u574f\u7684\u63a5\u7ebf\u6216\u8fde\u63a5\u5668\u3002\u6211\u4eec\u6ce8\u610f\u5230\uff0c\u5728\u9ad8\u91cc\u7a0b\u6570\u6216\u7ecf\u5e38\u66b4\u9732\u4e8e\u5bd2\u51b7\u51ac\u5b63\u6761\u4ef6\u4e0b\u7684\u8f66\u8f86\u4e2d\uff0c\u8fd9\u4e2a\u4ee3\u7801\u51fa\u73b0\u7684\u9891\u7387\u8f83\u9ad8\uff0c\u53ef\u80fd\u662f\u56e0\u4e3aDEF\u7cfb\u7edf\u7ec4\u4ef6\u627f\u53d7\u4e86\u66f4\u5927\u7684\u538b\u529b\u3002<\/p>\n<\/div>\n

\u7d27\u6025\u6027\u548c\u53ef\u9a7e\u9a76\u6027<\/h2>\n

\u867d\u7136P20BB\u4e0d\u662f\u4e00\u4e2a\u7acb\u5373\u7684\u7d27\u6025\u95ee\u9898\uff0c\u4f46\u5e94\u53ca\u65f6\u5904\u7406\u3002\u901a\u5e38\u53ef\u4ee5\u7ee7\u7eed\u9a7e\u9a76\uff0c\u4f46\u957f\u65f6\u95f4\u7684\u64cd\u4f5c\u53ef\u80fd\u5bfc\u81f4\uff1a<\/p>\n

    \n
  1. SCR\u7cfb\u7edf\u6548\u7387\u964d\u4f4e<\/li>\n
  2. \u50ac\u5316\u8f6c\u6362\u5668\u53ef\u80fd\u53d7\u635f<\/li>\n
  3. \u71c3\u6cb9\u7ecf\u6d4e\u6027\u4e0b\u964d<\/li>\n
  4. \u5728\u4e25\u91cd\u60c5\u51b5\u4e0b\uff0c\u8f66\u8f86\u53ef\u80fd\u8fdb\u5165\u762b\u75ea\u6a21\u5f0f<\/li>\n<\/ol>\n

    \u5efa\u8bae\u5728\u4ee3\u7801\u51fa\u73b0\u540e\u7684100-200\u82f1\u91cc\uff08160-320\u516c\u91cc\uff09\u5185\u8fdb\u884c\u8bca\u65ad\u548c\u7ef4\u4fee\u3002<\/p>\n

    \u4ee3\u7801\u8be6\u60c5<\/h2>\n

    P20BB\u662f\u9002\u7528\u4e8e\u4ece1996\u5e74\u5f00\u59cb\u751f\u4ea7\u7684\u8bb8\u591aOBD-II\u8f66\u8f86\u7684\u901a\u7528\u52a8\u529b\u603b\u6210\u4ee3\u7801\uff0c\u5305\u62ec\u798f\u7279\u3001\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u3001\u5965\u8fea\u3001RAM\u3001\u96ea\u4f5b\u5170\u3001\u5b9d\u9a6c\u548cGMC\u3002\u867d\u7136\u57fa\u672c\u5b9a\u4e49\u5728\u5236\u9020\u5546\u4e4b\u95f4\u4fdd\u6301\u4e00\u81f4\uff0c\u4f46\u5177\u4f53\u7684\u8bca\u65ad\u7a0b\u5e8f\u548c\u7ef4\u4fee\u6b65\u9aa4\u53ef\u80fd\u6709\u6240\u4e0d\u540c\u3002<\/p>\n

    \u6d89\u53ca\u7684\u7ec4\u4ef6<\/h2>\n
      \n
    1. \u8fd8\u539f\u5242\u52a0\u70ed\u5668\uff1a\u901a\u5e38\u4f4d\u4e8e\u67f4\u6cb9\u6392\u6c14\u6db2 (DEF) \u7bb1\u5185<\/li>\n
    2. PCM\uff1a\u76d1\u63a7\u548c\u63a7\u5236\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u8def<\/li>\n
    3. \u7ebf\u675f\u548c\u8fde\u63a5\u5668<\/li>\n
    4. \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u8def\u4e2d\u7684\u4fdd\u9669\u4e1d\u548c\u7ee7\u7535\u5668<\/li>\n<\/ol>\n

      \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u52a0\u70edDEF\uff0c\u4ee5\u9632\u6b62\u5728\u5bd2\u51b7\u6e29\u5ea6\u4e0b\u7ed3\u6676\uff0c\u5e76\u786e\u4fddSCR\u7cfb\u7edf\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

      \u5e38\u89c1\u539f\u56e0<\/h2>\n
        \n
      1. \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u8def\u4e2d\u7684\u63a5\u7ebf\u635f\u574f\u6216\u8150\u8680<\/li>\n
      2. \u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668<\/li>\n
      3. PCM\u6216\u53d1\u70ed\u585e\u63a7\u5236\u6a21\u5757\u6545\u969c<\/li>\n
      4. \u4fdd\u9669\u4e1d\u70e7\u574f\u6216\u7ee7\u7535\u5668\u635f\u574f<\/li>\n
      5. DEF\u6c61\u67d3\u6216\u52a3\u5316<\/li>\n<\/ol>\n

        \u8bca\u65ad\u6b65\u9aa4<\/h2>\n
          \n
        1. \u8fde\u63a5OBD-II\u626b\u63cf\u4eea\uff0c\u68c0\u7d22\u6240\u6709\u5b58\u50a8\u7684\u4ee3\u7801\u548c\u51bb\u7ed3\u5e27\u6570\u636e\u3002<\/li>\n
        2. \u76ee\u89c6\u68c0\u67e5\u8fd8\u539f\u5242\u52a0\u70ed\u7cfb\u7edf\u7684\u7ebf\u675f\u548c\u8fde\u63a5\u5668\u662f\u5426\u6709\u635f\u574f\u6216\u8150\u8680\u3002<\/li>\n
        3. \u68c0\u67e5\u5e76\u6d4b\u8bd5\u76f8\u5173\u7684\u4fdd\u9669\u4e1d\u548c\u7ee7\u7535\u5668\u3002<\/li>\n
        4. \u4f7f\u7528\u6570\u5b57\u4e07\u7528\u8868\u6d4b\u8bd5SCR\u63a7\u5236\u7cfb\u7edf\u7684\u7535\u6e90\u4f9b\u5e94\uff1a\n
            \n
          • \u7535\u6e90\u7535\u8def\u5e94\u663e\u793a\u7535\u6c60\u7535\u538b<\/li>\n
          • \u63a5\u5730\u7535\u8def\u5230\u8f66\u8eab\u63a5\u5730\u7684\u7535\u963b\u5e94\u5c0f\u4e8e0.1\u6b27\u59c6<\/li>\n<\/ul>\n<\/li>\n
          • \u4f7f\u7528\u626b\u63cf\u5de5\u5177\u6fc0\u6d3b\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5e76\u6d4b\u91cf\u8f93\u51fa\u63a7\u5236\u7535\u8def\u7684\u7535\u538b\u3002<\/li>\n
          • \u6d4b\u8bd5\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u5143\u4ef6\u7684\u7535\u963b\uff1a\n
              \n
            • \u5178\u578b\u7535\u963b\u8303\u56f4\uff1a0.5 – 2.0\u6b27\u59c6\uff0c\u572820\u00b0C\uff0868\u00b0F\uff09\u65f6<\/li>\n
            • \u5177\u4f53\u89c4\u683c\u56e0\u5236\u9020\u5546\u800c\u5f02<\/li>\n<\/ul>\n<\/li>\n
            • \u68c0\u67e5\u662f\u5426\u6709\u9488\u5bf9\u7279\u5b9a\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u7684\u6280\u672f\u670d\u52a1\u516c\u544a (TSB)\u3002<\/li>\n<\/ol>\n

              \u89e3\u51b3\u65b9\u6848<\/h2>\n
                \n
              1. \u4fee\u7406\u6216\u66f4\u6362\u635f\u574f\u7684\u63a5\u7ebf\u548c\u8fde\u63a5\u5668<\/li>\n
              2. \u66f4\u6362\u6545\u969c\u7684\u8fd8\u539f\u5242\u52a0\u70ed\u5668<\/li>\n
              3. \u5982\u679c\u6709\u53ef\u7528\u7684\uff0c\u66f4\u65b0PCM\u8f6f\u4ef6<\/li>\n
              4. \u66f4\u6362\u70e7\u574f\u7684\u4fdd\u9669\u4e1d\u6216\u635f\u574f\u7684\u7ee7\u7535\u5668<\/li>\n
              5. \u5728\u4e25\u91cd\u60c5\u51b5\u4e0b\uff0c\u66f4\u6362PCM\u6216\u53d1\u70ed\u585e\u63a7\u5236\u6a21\u5757<\/li>\n<\/ol>\n

                \u9884\u9632<\/h2>\n
                  \n
                1. \u5b9a\u671f\u68c0\u67e5DEF\u7cfb\u7edf\u53ca\u5176\u76f8\u5173\u7ec4\u4ef6<\/li>\n
                2. \u4f7f\u7528\u9ad8\u8d28\u91cf\u7684DEF\uff0c\u5e76\u4fdd\u6301\u9002\u5f53\u7684\u6db2\u4f4d<\/li>\n
                3. \u53ca\u65f6\u5904\u7406\u4efb\u4f55DEF\u76f8\u5173\u7684\u8b66\u544a\u706f<\/li>\n
                4. \u6839\u636e\u5236\u9020\u5546\u7684\u5efa\u8bae\u8fdb\u884c\u5b9a\u671f\u7ef4\u62a4<\/li>\n<\/ol>\n

                  \u7ef4\u4fee\u8d39\u7528<\/h2>\n
                    \n
                  • \u8bca\u65ad\u8d39\u7528\uff1a75 – 150\u7f8e\u5143\uff08\u20ac65 – \u20ac130\uff09<\/li>\n
                  • \u8fd8\u539f\u5242\u52a0\u70ed\u5668\u66f4\u6362\uff1a200 – 500\u7f8e\u5143\uff08\u20ac175 – \u20ac435\uff09<\/li>\n
                  • \u63a5\u7ebf\u4fee\u7406\uff1a100 – 300\u7f8e\u5143\uff08\u20ac85 – \u20ac260\uff09<\/li>\n
                  • PCM\u66f4\u6362\uff08\u5982\u6709\u5fc5\u8981\uff09\uff1a500 – 2000\u7f8e\u5143\uff08\u20ac435 – \u20ac1740\uff09<\/li>\n<\/ul>\n

                    \u96f6\u4ef6\u6210\u672c\u56e0\u8f66\u8f86\u54c1\u724c\u548c\u578b\u53f7\u800c\u5f02\u3002\u52b3\u52a8\u529b\u8d39\u7387\u901a\u5e38\u5728\u6bcf\u5c0f\u65f675\u5230150\u7f8e\u5143\uff08\u20ac65 – \u20ac130\uff09\u4e4b\u95f4\u3002<\/p>\n

                    \u76f8\u5173\u95ee\u9898\u548c\u6545\u969c\u4ee3\u7801<\/h2>\n

                    P20BB\u901a\u5e38\u4e0e\u5176\u4ed6DEF\u548cSCR\u7cfb\u7edf\u76f8\u5173\u7684\u4ee3\u7801\u540c\u65f6\u51fa\u73b0\uff1a<\/p>\n

                      \n
                    1. P20B9\uff1a\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u201cA\u201d\u63a7\u5236\u7535\u8def\u5f00\u8def<\/li>\n
                    2. P20BA\uff1a\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u201cA\u201d\u63a7\u5236\u7535\u8def\u9ad8<\/li>\n
                    3. P20BC\uff1a\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u201cB\u201d\u63a7\u5236\u7535\u8def\u4f4e<\/li>\n
                    4. P208E\uff1a\u8fd8\u539f\u5242\u6cf5\u63a7\u5236\u7535\u8def\u4f4e<\/li>\n
                    5. P203B\uff1a\u8fd8\u539f\u5242\u6db2\u4f4d\u4f20\u611f\u5668\u7535\u8def\u4f4e<\/li>\n<\/ol>\n

                      \u8fd9\u4e9b\u4ee3\u7801\u53ef\u80fd\u8868\u660eSCR\u7cfb\u7edf\u4e2d\u5b58\u5728\u66f4\u5e7f\u6cdb\u7684\u95ee\u9898\uff0c\u5e94\u8be5\u8fdb\u884c\u5168\u9762\u8bca\u65ad\u3002<\/p>\n

                      \u901a\u8fc7\u53ca\u65f6\u5904\u7406P20BB\u4ee3\u7801\u5e76\u7ef4\u62a4\u60a8\u7684\u8f66\u8f86DEF\u7cfb\u7edf\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u67f4\u6cb9\u53d1\u52a8\u673a\u7684\u6392\u653e\u63a7\u5236\u7cfb\u7edf\u4fdd\u6301\u6700\u4f73\u6027\u80fd\u548c\u5bff\u547d\u3002<\/p>\n

                      \u5173\u4e8eP20BB\u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n

                      P20BB\u4ee3\u7801\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h3>\n

                      P20BB\u8868\u793a\u201c\u8fd8\u539f\u5242\u52a0\u70ed\u5668’A’\u63a7\u5236\u7535\u8def\u4f4e\u201d\uff0c\u610f\u5473\u7740\u52a8\u529b\u603b\u6210\u63a7\u5236\u6a21\u5757 (PCM) \u68c0\u6d4b\u5230\u63a7\u5236\u7535\u8def\u4e2d\u7684\u7535\u538b\u4e0d\u8db3\u3002<\/p>\n

                      \u54ea\u4e9b\u8f66\u8f86\u5e38\u89c1P20BB\u4ee3\u7801\uff1f<\/h3>\n

                      \u8be5\u4ee3\u7801\u5e38\u89c1\u4e8e\u914d\u5907\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f (SCR) \u7cfb\u7edf\u7684\u67f4\u6cb9\u8f66\u8f86\u4e2d\uff0c\u5305\u62ec\u798f\u7279\u3001\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\u3001\u5965\u8fea\u3001RAM\u3001\u96ea\u4f5b\u5170\u3001\u5b9d\u9a6c\u548cGMC\u7b49\u54c1\u724c\u3002<\/p>\n

                      \u5e26\u6709P20BB\u4ee3\u7801\u7684\u8f66\u8f86\u8fd8\u80fd\u5b89\u5168\u9a7e\u9a76\u5417\uff1f<\/h3>\n

                      \u867d\u7136\u5b83\u4e0d\u662f\u7acb\u5373\u5371\u53ca\u5b89\u5168\u7684\u95ee\u9898\uff0c\u4f46\u5efa\u8bae\u53ca\u65f6\u89e3\u51b3\u95ee\u9898\u3002\u7ee7\u7eed\u9a7e\u9a76\u53ef\u80fd\u4f1a\u5bfc\u81f4SCR\u6548\u7387\u964d\u4f4e\u3001\u50ac\u5316\u8f6c\u6362\u5668\u635f\u574f\u548c\u71c3\u6cb9\u7ecf\u6d4e\u6027\u4e0b\u964d\u3002<\/p>\n

                      P20BB\u4ee3\u7801\u7684\u4e3b\u8981\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n

                      \u5e38\u89c1\u75c7\u72b6\u5305\u62ec\u53d1\u52a8\u673a\u6027\u80fd\u4e0b\u964d\u3001\u8fc7\u591a\u7684\u9ed1\u8272\u6392\u6c14\u70df\u96fe\u3001\u71c3\u6cb9\u6548\u7387\u4e0b\u964d\u548c\u53d1\u52a8\u673a\u6545\u969c\u706f\u4eae\u8d77\u3002<\/p>\n

                      P20BB\u4ee3\u7801\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n

                      \u5e38\u89c1\u539f\u56e0\u5305\u62ec\u63a5\u7ebf\u635f\u574f\u3001\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u6545\u969c\u3001PCM\u5931\u6548\u3001\u4fdd\u9669\u4e1d\u70e7\u574f\u3001\u7ee7\u7535\u5668\u635f\u574f\u6216DEF\u53d7\u6c61\u67d3\u3002<\/p>\n

                      P20BB\u4ee3\u7801\u5982\u4f55\u8bca\u65ad\uff1f<\/h3>\n

                      \u8bca\u65ad\u901a\u5e38\u5305\u62ec\u4f7f\u7528OBD-II\u626b\u63cf\u4eea\uff0c\u76ee\u89c6\u68c0\u67e5\u63a5\u7ebf\u548c\u8fde\u63a5\u5668\uff0c\u6d4b\u8bd5\u4fdd\u9669\u4e1d\u548c\u7ee7\u7535\u5668\uff0c\u4ee5\u53ca\u6d4b\u91cf\u8fd8\u539f\u5242\u52a0\u70ed\u5668\u7535\u8def\u4e2d\u7684\u7535\u538b\u548c\u7535\u963b\u3002<\/p>\n

                      \u6211\u53ef\u4ee5\u81ea\u5df1\u8bca\u65ad\u5e76\u4fee\u590dP20BB\u4ee3\u7801\u5417\uff1f<\/h3>\n

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