{"id":288183,"date":"2024-10-28T06:04:04","date_gmt":"2024-10-28T06:04:04","guid":{"rendered":"https:\/\/www.ziptuning.com\/zh\/?p=288183"},"modified":"2024-11-01T06:14:14","modified_gmt":"2024-11-01T06:14:14","slug":"spn-4335-def-air-pressure","status":"publish","type":"post","link":"https:\/\/www.ziptuning.com\/zh\/blog\/spn-4335-def-air-pressure\/","title":{"rendered":"SPN 4335 \u2013 DEF\u7a7a\u6c14\u538b\u529b"},"content":{"rendered":"<h2 id=\"understanding-fault-code-spn-4335\">\u4e86\u89e3\u6545\u969c\u4ee3\u7801SPN 4335<\/h2>\n<p>\u6545\u969c\u4ee3\u7801SPN 4335\u8868\u793a\u6392\u6c14\u518d\u5faa\u73af\uff08EGR\uff09\u4f4d\u7f6e\u4f20\u611f\u5668\u7535\u8def\u5b58\u5728\u95ee\u9898\u3002\u5f53\u6b64\u4ee3\u7801\u88ab\u89e6\u53d1\u65f6\uff0c\u91cd\u8981\u7684\u662f\u53ca\u65f6\u8bca\u65ad\u548c\u89e3\u51b3\u8be5\u95ee\u9898\uff0c\u4ee5\u9632\u6b62\u6f5c\u5728\u7684\u53d1\u52a8\u673a\u635f\u574f\u3002\u4e0d\u8fc7\uff0c\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u9664\u975e\u51fa\u73b0\u5176\u4ed6\u4e25\u91cd\u75c7\u72b6\uff0c\u5426\u5219\u53ef\u4ee5\u5b89\u5168\u5730\u9a7e\u9a76\u8f66\u8f86\u5230\u4fee\u7406\u5382\u3002<\/p>\n<div class=\"workshop-experience-text\">\n<p>\u5728\u6211\u4eec\u7684\u8f66\u95f4\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9047\u5230SPN 4335\u6545\u969c\u4ee3\u7801\uff0c\u5404\u79cd\u54c1\u724c\u7684\u8f66\u8f86\u90fd\u6709\u53d1\u751f\uff0c\u4f46\u5728\u6b27\u6d32\u5361\u8f66\u5982\u6c83\u5c14\u6c83\uff08Volvo\uff09\u3001\u6885\u8d5b\u5fb7\u65af-\u5954\u9a70\uff08Mercedes-Benz\uff09\u548c\u66fc\uff08MAN\uff09\u4e0a\u6700\u4e3a\u5e38\u89c1\u3002\u5c31\u5728\u4e0a\u5468\uff0c\u6211\u4eec\u63a5\u5f85\u4e86\u4e00\u8f86\u6c83\u5c14\u6c83FH16\uff0cDEF\u6307\u793a\u706f\u4eae\uff0c\u8f66\u8f86\u901f\u5ea6\u9650\u5236\u5230\u6bcf\u5c0f\u65f65\u82f1\u91cc\u3002\u7ed3\u679c\u53d1\u73b0\u662f\u5178\u578b\u7684DEF\u7ed3\u6676\u5835\u585e\u7ba1\u8def\u548c\u55b7\u5c04\u9600\uff0c\u89e6\u53d1\u4e86\u4f4e\u538b\u4ee3\u7801\u3002\u6211\u4eec\u5728\u6885\u8d5b\u5fb7\u65afActros\u548c\u66fcTGX\u4e0a\u4e5f\u9047\u5230\u8fc7\u7c7b\u4f3c\u95ee\u9898\u3002\u6bcf\u5f53\u51fa\u73b0\u6b64\u4ee3\u7801\u65f6\uff0c\u6211\u4eec\u90fd\u4f1a\u5148\u68c0\u67e5DEF\u6cb9\u7bb1\u3001\u6cf5\u548c\u7ba1\u8def\u662f\u5426\u6709\u4efb\u4f55\u6c61\u67d3\u6216\u6cc4\u6f0f\u8ff9\u8c61\u3002\u901a\u5e38\uff0c\u901a\u8fc7\u5f7b\u5e95\u6e05\u6d01\u6216\u66f4\u6362\u4e00\u4e9b\u90e8\u4ef6\uff0c\u8f66\u8f86\u5c31\u80fd\u91cd\u65b0\u4e0a\u8def\uff0c\u4f46\u8fd9\u4e2a\u95ee\u9898\u5728\u6b27\u6d32\u8f66\u578b\u4e0a\u786e\u5b9e\u662f\u4e00\u5927\u56f0\u6270\u3002<\/p>\n<\/div>\n<h2 id=\"urgency-and-severity\">\u7d27\u6025\u6027\u4e0e\u4e25\u91cd\u6027<\/h2>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u8f66\u8f86\u8fd0\u884c\u6b63\u5e38\uff0c\u53ef\u4ee5\u5728SPN 4335\u4ee3\u7801\u6fc0\u6d3b\u7684\u60c5\u51b5\u4e0b\u7ee7\u7eed\u9a7e\u9a76\u3002\u7136\u800c\uff0c\u6700\u597d\u5c3d\u5feb\u8bca\u65ad\u5e76\u4fee\u7406\u8be5\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u51fa\u73b0\u4ee5\u4e0b\u75c7\u72b6\u65f6\uff1a<\/p>\n<ul>\n<li>\u6020\u901f\u4e0d\u7a33<\/li>\n<li>\u71c3\u6cb9\u7ecf\u6d4e\u6027\u4e0b\u964d<\/li>\n<li>\u6392\u653e\u589e\u52a0<\/li>\n<li>\u53d1\u52a8\u673a\u68c0\u67e5\u706f\u4eae<\/li>\n<\/ul>\n<p>\u5982\u679c\u8f66\u8f86\u8fdb\u5165\u201c\u8ddb\u884c\u6a21\u5f0f\u201d\u6216\u660e\u663e\u529f\u7387\u4e0b\u964d\uff0c\u6700\u597d\u505c\u6b62\u9a7e\u9a76\uff0c\u5e76\u5c06\u8f66\u8f86\u62d6\u5230\u4fee\u7406\u5382\u8fdb\u884c\u8bca\u65ad\u548c\u7ef4\u4fee\u3002<\/p>\n<h2 id=\"code-specifics\">\u4ee3\u7801\u7ec6\u8282<\/h2>\n<p>SPN 4335\u662f\u4e00\u4e2a\u901a\u7528\u52a8\u529b\u7cfb\u7edf\u4ee3\u7801\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u914d\u5907EGR\u7cfb\u7edf\u7684\u8f66\u8f86\uff0c\u5305\u62ec\u798f\u7279\uff08Ford\uff09\u3001\u901a\u7528\u6c7d\u8f66\uff08GM\uff09\u3001\u514b\u83b1\u65af\u52d2\uff08Chrysler\uff09\u3001\u4e30\u7530\uff08Toyota\uff09\u3001\u672c\u7530\uff08Honda\uff09\u7b49\u4e3b\u8981\u54c1\u724c\u7684\u6c7d\u8f66\u548c\u5361\u8f66\u3002\u6b64\u4ee3\u7801\u8868\u793a\u52a8\u529b\u7cfb\u7edf\u63a7\u5236\u6a21\u5757\uff08PCM\uff09\u68c0\u6d4b\u5230EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u4fe1\u53f7\u8d85\u51fa\u9884\u671f\u8303\u56f4\u3002<\/p>\n<h2 id=\"parts-involved\">\u6d89\u53ca\u7684\u90e8\u4ef6<\/h2>\n<p>\u4e0eSPN 4335\u4ee3\u7801\u76f8\u5173\u7684\u4e3b\u8981\u90e8\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>EGR\u9600<\/strong>\uff1a\u5141\u8bb8\u6392\u6c14\u6c14\u4f53\u5faa\u73af\u56de\u5230\u53d1\u52a8\u673a\u8fdb\u6c14\u4e2d\uff0c\u4ee5\u964d\u4f4e\u71c3\u70e7\u6e29\u5ea6\u548c\u51cf\u5c11NOx\u6392\u653e\u3002<\/li>\n<li><strong>EGR\u4f4d\u7f6e\u4f20\u611f\u5668<\/strong>\uff1a\u6d4b\u91cfEGR\u9600\u9488\u7684\u4f4d\u7f6e\u5e76\u5411PCM\u53d1\u9001\u4fe1\u53f7\uff0c\u901a\u5e38\u4e3a\u53ef\u53d8\u7535\u963b\u6216\u970d\u5c14\u6548\u5e94\u4f20\u611f\u5668\u3002<\/li>\n<li><strong>PCM<\/strong>\uff1a\u63a7\u5236EGR\u7cfb\u7edf\u5e76\u76d1\u63a7EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n<h2 id=\"common-causes\">\u5e38\u89c1\u539f\u56e0<\/h2>\n<p>\u4ee3\u7801SPN 4335\u7684\u4e00\u4e9b\u5178\u578b\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u6545\u969c<\/li>\n<li>EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u7535\u8def\u4e2d\u7684\u63a5\u7ebf\u95ee\u9898\uff08\u77ed\u8def\u3001\u5f00\u8def\u3001\u9ad8\u963b\u6297\uff09<\/li>\n<li>EGR\u9600\u5361\u6ede\u6216\u5361\u6b7b<\/li>\n<li>EGR\u7cfb\u7edf\u4e2d\u79ef\u78b3<\/li>\n<li>PCM\u6545\u969c\uff08\u5c11\u89c1\uff09<\/li>\n<\/ol>\n<h2 id=\"diagnosis-steps\">\u8bca\u65ad\u6b65\u9aa4<\/h2>\n<p>\u8981\u6b63\u786e\u8bca\u65adSPN 4335\u4ee3\u7801\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u626b\u63cf\u6545\u969c\u4ee3\u7801\u5e76\u8bb0\u5f55\u51bb\u7ed3\u5e27\u6570\u636e\u3002<\/li>\n<li>\u76ee\u89c6\u68c0\u67e5EGR\u9600\u548c\u4f4d\u7f6e\u4f20\u611f\u5668\u662f\u5426\u6709\u635f\u574f\u6216\u4e25\u91cd\u79ef\u78b3\u3002<\/li>\n<li>\u6d4b\u8bd5EGR\u9600\u7684\u8fd0\u52a8\u60c5\u51b5\uff0c\u89c2\u5bdf\u662f\u5426\u6709\u5361\u6ede\u3002<\/li>\n<li>\u68c0\u67e5EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u7684\u7535\u963b\uff0c\u5e76\u4e0e\u89c4\u683c\uff08\u901a\u5e38\u4e3a0-10 k\u03a9\uff09\u8fdb\u884c\u6bd4\u8f83\u3002<\/li>\n<li>\u5728\u4f20\u611f\u5668\u8fde\u63a5\u5668\u4e0a\u9a8c\u8bc1\u53c2\u8003\u7535\u538b\u548c\u63a5\u5730\u4fe1\u53f7\u3002<\/li>\n<li>\u68c0\u67e5EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u7ebf\u675f\u7684\u8fde\u7eed\u6027\u5e76\u6d4b\u91cf\u7535\u963b\u3002<\/li>\n<\/ol>\n<h2 id=\"repair-solutions\">\u7ef4\u4fee\u65b9\u6848<\/h2>\n<p>\u6839\u636e\u8bca\u65ad\u539f\u56e0\uff0cSPN 4335\u7684\u7ef4\u4fee\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u66f4\u6362EGR\u4f4d\u7f6e\u4f20\u611f\u5668<\/li>\n<li>\u6e05\u6d01\u6216\u66f4\u6362EGR\u9600<\/li>\n<li>\u4fee\u7406EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u7535\u8def\u4e2d\u7684\u63a5\u7ebf\u6216\u8fde\u63a5\u5668<\/li>\n<li>\u6e05\u9664EGR\u7cfb\u7edf\u548c\u8fdb\u6c14\u4e2d\u7684\u78b3\u79ef\u7269<\/li>\n<li>\u91cd\u65b0\u7f16\u7a0b\u6216\u66f4\u6362PCM\uff08\u5c11\u89c1\uff09<\/li>\n<\/ul>\n<h2 id=\"prevention-and-cost\">\u9884\u9632\u63aa\u65bd\u548c\u6210\u672c<\/h2>\n<p>\u4e3a\u4e86\u9632\u6b62\u4e0eEGR\u76f8\u5173\u7684\u95ee\u9898\uff0c\u5e94\u5b9a\u671f\u4fdd\u517b\u8f66\u8f86\u5e76\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684\u71c3\u6599\u3002\u6bcf50,000-80,000\u516c\u91cc\uff0830,000-50,000\u82f1\u91cc\uff09\u6e05\u6d01\u4e00\u6b21EGR\u7cfb\u7edf\u6709\u52a9\u4e8e\u907f\u514d\u79ef\u78b3\u3002<\/p>\n<p>SPN 4335\u7684\u7ef4\u4fee\u6210\u672c\u56e0\u6839\u672c\u539f\u56e0\u800c\u5f02\uff1a<\/p>\n<ul>\n<li>EGR\u4f4d\u7f6e\u4f20\u611f\u5668\uff1a$80-$150 \/ \u20ac75-\u20ac140<\/li>\n<li>EGR\u9600\uff1a$250-$500 \/ \u20ac235-\u20ac470<\/li>\n<li>\u63a5\u7ebf\u4fee\u7406\uff1a$50-$200 \/ \u20ac45-\u20ac190<\/li>\n<li>EGR\u7cfb\u7edf\u6e05\u6d01\uff1a$100-$250 \/ \u20ac95-\u20ac235<\/li>\n<\/ul>\n<h2 id=\"related-issues\">\u76f8\u5173\u95ee\u9898<\/h2>\n<p>\u5176\u4ed6\u53ef\u80fd\u4e0eSPN 4335\u4e00\u8d77\u51fa\u73b0\u7684\u6545\u969c\u4ee3\u7801\u548c\u75c7\u72b6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p0400-exhaust-gas-recirculation-flow-malfunction\/\" title=\"P0400 - \u6392\u6c14\u518d\u5faa\u73af\u6d41\u91cf\u6545\u969c\">P0400 &#8211; \u6392\u6c14\u518d\u5faa\u73af\u6d41\u91cf\u6545\u969c<\/a><\/li>\n<li><a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/p0401-exhaust-gas-recirculation-flow-insufficient-detected-a-technical-description\/\" title=\"P0401 - \u68c0\u6d4b\u5230\u6392\u6c14\u518d\u5faa\u73af\u6d41\u91cf\u4e0d\u8db3\">P0401 &#8211; \u68c0\u6d4b\u5230\u6392\u6c14\u518d\u5faa\u73af\u6d41\u91cf\u4e0d\u8db3<\/a><\/li>\n<li>P0402 &#8211; \u68c0\u6d4b\u5230\u6392\u6c14\u518d\u5faa\u73af\u6d41\u91cf\u8fc7\u591a<\/li>\n<li>\u70b9\u706b\u4e0d\u826f<\/li>\n<li>\u52a0\u901f\u65f6\u8fdf\u6ede<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4e86\u89e3\u6545\u969c\u4ee3\u7801SPN 4335\u5e76\u9075\u5faa\u6b63\u786e\u7684\u8bca\u65ad\u548c\u7ef4\u4fee\u6b65\u9aa4\uff0c\u6280\u5e08\u53ef\u4ee5\u6709\u6548\u89e3\u51b3EGR\u4f4d\u7f6e\u4f20\u611f\u5668\u95ee\u9898\uff0c\u786e\u4fdd\u8f66\u8f86\u9ad8\u6548\u8fd0\u884c\u5e76\u51cf\u5c11\u6392\u653e\u3002<\/p>\n<h2 id=\"frequently-asked-questions-about-spn-4335\">\u5173\u4e8eSPN 4335\u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3 id=\"what-does-fault-code-spn-4335-indicate-\">\u6545\u969c\u4ee3\u7801SPN 4335\u8868\u793a\u4ec0\u4e48\uff1f<\/h3>\n<p>SPN 4335\u8868\u793a\u67f4\u6cb9\u6392\u6c14\u6db2\uff08DEF\uff09\u7cfb\u7edf\u7a7a\u6c14\u538b\u529b\u5b58\u5728\u95ee\u9898\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u8fd9\u610f\u5473\u7740DEF\u7cfb\u7edf\u7684\u7a7a\u6c14\u538b\u529b\u4f4e\u4e8e\u6b63\u5e38\u5de5\u4f5c\u8303\u56f4\u3002<\/p>\n<h3 id=\"what-are-the-common-symptoms-of-spn-4335-\">SPN 4335\u7684\u5e38\u89c1\u75c7\u72b6\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>SPN 4335\u7684\u5e38\u89c1\u75c7\u72b6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u53d1\u52a8\u673a\u68c0\u67e5\u706f\u4eae<\/li>\n<li>\u53d1\u52a8\u673a\u529f\u7387\u4e0b\u964d\uff08\u964d\u7ea7\uff09<\/li>\n<li>DEF\u8d28\u91cf\u5dee\u63d0\u793a<\/li>\n<li>DEF\u6d88\u8017\u91cf\u589e\u52a0<\/li>\n<\/ul>\n<h3 id=\"what-systems-are-affected-by-spn-4335-\">SPN 4335\u5f71\u54cd\u54ea\u4e9b\u7cfb\u7edf\uff1f<\/h3>\n<p>SPN 4335\u5f71\u54cd\u9009\u62e9\u6027\u50ac\u5316\u8fd8\u539f\uff08SCR\uff09\u7cfb\u7edf\uff0c\u8be5\u7cfb\u7edf\u4f7f\u7528DEF\u6db2\u4f53\u6765\u51cf\u5c11NOx\u6392\u653e\u3002\u6d89\u53ca\u7684\u4e3b\u8981\u90e8\u4ef6\u5305\u62ecDEF\u6cb9\u7bb1\u3001\u6cf5\u3001\u538b\u529b\u4f20\u611f\u5668\u3001\u55b7\u5c04\u9600\u4ee5\u53ca\u76f8\u5173\u7684\u7ba1\u8def\u548c\u63a5\u7ebf\u3002<\/p>\n<h3 id=\"is-it-safe-to-drive-with-an-active-spn-4335-code-\">\u5e26\u6709\u6d3b\u52a8SPN 4335\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u9a7e\u9a76\u662f\u5426\u5b89\u5168\uff1f<\/h3>\n<p>\u8fd9\u53d6\u51b3\u4e8e\u4e25\u91cd\u7a0b\u5ea6\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u6ca1\u6709\u5176\u4ed6\u75c7\u72b6\uff0c\u60a8\u53ef\u4ee5\u5c06\u8f66\u8f86\u5f00\u5230\u4fee\u7406\u5382\u3002\u7136\u800c\uff0c\u5982\u679c\u53d1\u52a8\u673a\u964d\u7ea7\u6216\u51fa\u73b0\u5176\u4ed6\u6545\u969c\u4ee3\u7801\uff0c\u6700\u597d\u505c\u6b62\u9a7e\u9a76\u5e76\u5c3d\u5feb\u8fdb\u884c\u8bca\u65ad\uff0c\u4ee5\u9632\u6b62\u8fdb\u4e00\u6b65\u635f\u574f\u3002<\/p>\n<h3 id=\"what-are-the-common-causes-of-low-def-system-air-pressure-\">\u4f4eDEF\u7cfb\u7edf\u7a7a\u6c14\u538b\u529b\u7684\u5e38\u89c1\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u4f4eDEF\u7cfb\u7edf\u7a7a\u6c14\u538b\u529b\u7684\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\u6545\u969c\u7684\u7a7a\u6c14\u538b\u529b\u63a7\u5236\u9600<\/li>\n<li>\u7a7a\u6c14\u4f9b\u7ed9\u7ba1\u8def\u6216\u63a5\u5934\u7684\u6cc4\u6f0f<\/li>\n<li>\u7a7a\u6c14\u538b\u7f29\u673a\u6545\u969c<\/li>\n<li>\u7a7a\u6c14\u6ee4\u6e05\u5668\u6216\u5e72\u71e5\u5668\u5835\u585e<\/li>\n<li>\u6545\u969c\u7684DEF\u6cf5<\/li>\n<\/ol>\n<h3 id=\"how-do-you-diagnose-the-root-cause-of-spn-4335-\">\u5982\u4f55\u8bca\u65adSPN 4335\u7684\u6839\u672c\u539f\u56e0\uff1f<\/h3>\n<p>\u8981\u8bca\u65adSPN 4335\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5\u7ba1\u8def\u548c\u63a5\u5934\u662f\u5426\u6709\u7a7a\u6c14\u6cc4\u6f0f<\/li>\n<li>\u786e\u8ba4\u7a7a\u6c14\u538b\u7f29\u673a\u8f93\u51fa\u538b\u529b<\/li>\n<li>\u6d4b\u8bd5\u7a7a\u6c14\u538b\u529b\u63a7\u5236\u9600\u7684\u8fd0\u884c\u72b6\u51b5<\/li>\n<li>\u68c0\u67e5\u7a7a\u6c14\u6ee4\u6e05\u5668\u548c\u5e72\u71e5\u5668\u662f\u5426\u6709\u5835\u585e<\/li>\n<li>\u6d4b\u91cfDEF\u538b\u529b\u5e76\u4e0e\u89c4\u683c\u5bf9\u6bd4<\/li>\n<\/ol>\n<h3 id=\"what-repairs-are-needed-to-fix-low-def-air-pressure-\">\u4fee\u590d\u4f4eDEF\u7a7a\u6c14\u538b\u529b\u9700\u8981\u54ea\u4e9b\u7ef4\u4fee\uff1f<\/h3>\n<p>\u4fee\u590dSPN 4335\u53ef\u80fd\u6d89\u53ca\u4ee5\u4e0b\u7ef4\u4fee\uff1a<\/p>\n<ul>\n<li>\u66f4\u6362\u7a7a\u6c14\u538b\u529b\u63a7\u5236\u9600<\/li>\n<li>\u4fee\u590d\u7ba1\u8def\u6216\u63a5\u5934\u4e2d\u7684\u7a7a\u6c14\u6cc4\u6f0f<\/li>\n<li>\u7ef4\u62a4\u7a7a\u6c14\u538b\u7f29\u673a<\/li>\n<li>\u66f4\u6362\u5835\u585e\u7684\u7a7a\u6c14\u6ee4\u6e05\u5668\u6216\u5e72\u71e5\u5668<\/li>\n<li>\u66f4\u6362\u6545\u969c\u7684DEF\u6cf5<\/li>\n<\/ul>\n<h3 id=\"how-much-does-it-typically-cost-to-fix-spn-4335-\">\u4fee\u590dSPN 4335\u7684\u5178\u578b\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/h3>\n<p>\u4fee\u590dSPN 4335\u7684\u8d39\u7528\u56e0\u6839\u672c\u539f\u56e0\u800c\u5f02\u3002\u7a7a\u6c14\u538b\u529b\u63a7\u5236\u9600\u7684\u8d39\u7528\u5927\u7ea6\u4e3a$200-$400\uff0c\u800cDEF\u6cf5\u7684\u66f4\u6362\u53ef\u80fd\u5305\u62ec\u4eba\u5de5\u5728\u5185\u9700$800-$1500\u3002\u7a7a\u6c14\u6cc4\u6f0f\u4fee\u590d\u901a\u5e38\u6210\u672c\u8f83\u4f4e\uff08$50-$200\uff09\uff0c\u9664\u975e\u9700\u8981\u66f4\u6362\u7ba1\u8def\u3002<\/p>\n<h3 id=\"can-low-def-air-pressure-cause-other-fault-codes-\">\u4f4eDEF\u7a7a\u6c14\u538b\u529b\u4f1a\u5bfc\u81f4\u5176\u4ed6\u6545\u969c\u4ee3\u7801\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u4f4eDEF\u7a7a\u6c14\u538b\u529b\u53ef\u80fd\u4f1a\u89e6\u53d1\u4e0eSCR\u7cfb\u7edf\u76f8\u5173\u7684\u5176\u4ed6\u6545\u969c\u4ee3\u7801\uff0c\u5982<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-4334-aftertreatment-1-diesel-exhaust-fluid-pump-motor-speed\/\" title=\"SPN 4334\uff08DEF\u538b\u529b\u4f4e\u4e8e\u8303\u56f4\uff09\">SPN 4334\uff08DEF\u538b\u529b\u4f4e\u4e8e\u8303\u56f4\uff09<\/a>\u3001<a href=\"https:\/\/www.ziptuning.com\/zh\/blog\/spn-4094-nox-limits-exceeded-due-to-insufficient-def-quality\/\" title=\"SPN 4094\uff08NOx\u6548\u7387\u4f4e\u4e8e\u9608\u503c\uff09\">SPN 4094\uff08NOx\u6548\u7387\u4f4e\u4e8e\u9608\u503c\uff09<\/a>\u548cSPN 4364\uff08SCR\u6548\u7387\u4f4e\u4e8e\u9608\u503c\uff09\u3002<\/p>\n<h3 id=\"what-is-the-normal-operating-pressure-for-the-def-system-air-supply-\">DEF\u7cfb\u7edf\u7a7a\u6c14\u4f9b\u7ed9\u7684\u6b63\u5e38\u5de5\u4f5c\u538b\u529b\u662f\u591a\u5c11\uff1f<\/h3>\n<p>DEF\u7cfb\u7edf\u7a7a\u6c14\u4f9b\u7ed9\u7684\u6b63\u5e38\u5de5\u4f5c\u538b\u529b\u901a\u5e38\u4e3a80-120 psi\uff08550-825 kPa\uff09\u3002\u5177\u4f53\u89c4\u683c\u56e0\u53d1\u52a8\u673a\u54c1\u724c\u548c\u578b\u53f7\u800c\u5f02\u3002<\/p>\n<h3 id=\"how-can-i-prevent-issues-with-the-def-system-air-pressure-\">\u5982\u4f55\u9884\u9632DEF\u7cfb\u7edf\u7a7a\u6c14\u538b\u529b\u7684\u95ee\u9898\uff1f<\/h3>\n<p>\u4e3a\u4e86\u9632\u6b62DEF\u7cfb\u7edf\u7a7a\u6c14\u538b\u529b\u7684\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u4fdd\u517b\u7a7a\u6c14\u538b\u7f29\u673a\u548c\u6ee4\u6e05\u5668<\/li>\n<li>\u53ca\u65f6\u4fee\u590d\u4efb\u4f55\u7a7a\u6c14\u6cc4\u6f0f<\/li>\n<li>\u4f7f\u7528\u6765\u81ea\u4fe1\u8a89\u826f\u597d\u7684\u4f9b\u5e94\u5546\u7684\u9ad8\u8d28\u91cfDEF\u6db2\u4f53<\/li>\n<li>\u907f\u514d\u5c06DEF\u6cb9\u7bb1\u8017\u5c3d<\/li>\n<li>\u4fdd\u6301\u7535\u6c14\u8fde\u63a5\u5668\u6e05\u6d01\u4e14\u56fa\u5b9a<\/li>\n<\/ul>\n<h3 id=\"what-component-is-most-likely-to-cause-spn-4335-\">\u54ea\u4e2a\u90e8\u4ef6\u6700\u6709\u53ef\u80fd\u5bfc\u81f4SPN 4335\uff1f<\/h3>\n<p>\u7a7a\u6c14\u538b\u529b\u63a7\u5236\u9600\u662f\u6700\u5e38\u89c1\u7684\u5bfc\u81f4SPN 4335\u7684\u539f\u56e0\u3002\u8be5\u9600\u8c03\u8282\u4f9b\u5e94\u7ed9DEF\u7cfb\u7edf\u7684\u538b\u529b\u3002\u5982\u679c\u5176\u5931\u6548\u6216\u5361\u6ede\uff0c\u53ef\u80fd\u5bfc\u81f4\u7a7a\u6c14\u538b\u529b\u4f4e\u4e8e\u89c4\u683c\u3002<\/p>\n<h3 id=\"can-low-air-pressure-affect-def-injection-and-dosing-\">\u4f4e\u7a7a\u6c14\u538b\u529b\u4f1a\u5f71\u54cdDEF\u7684\u55b7\u5c04\u548c\u8ba1\u91cf\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u9002\u5f53\u7684\u7a7a\u6c14\u538b\u529b\u5bf9\u4e8eDEF\u6cf5\u5efa\u7acb\u538b\u529b\u548c\u55b7\u5c04\u9600\u96fe\u5316\u6db2\u4f53\u662f\u5fc5\u8981\u7684\u3002\u5982\u679c\u7a7a\u6c14\u538b\u529b\u8fc7\u4f4e\uff0cDEF\u53ef\u80fd\u65e0\u6cd5\u6309\u9002\u5f53\u901f\u7387\u55b7\u5c04\uff0c\u5bfc\u81f4NOx\u8fd8\u539f\u4e0d\u5b8c\u5168\u53ca\u5176\u4ed6SCR\u7cfb\u7edf\u95ee\u9898\u3002<\/p>\n<h3 id=\"what-is-the-difference-between-spn-4334-and-spn-4335-\">SPN 4334\u548cSPN 4335\u4e4b\u95f4\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h3>\n<p>SPN 4334\u8868\u793aDEF\u6db2\u4f53\u538b\u529b\u4f4e\uff0c\u800cSPN 4335\u6307\u5411DEF\u7a7a\u6c14\u538b\u529b\u4f4e\u3002\u5b83\u4eec\u662f\u76f8\u5173\u4f46\u72ec\u7acb\u7684\u95ee\u9898\u3002\u7a7a\u6c14\u538b\u529b\u4f9b\u5e94\u7ed9DEF\u7cfb\u7edf\u4ee5\u5e2e\u52a9\u6cf5\u9001\u548c\u55b7\u5c04\u6db2\u4f53\uff0c\u56e0\u6b64\u4f4e\u7a7a\u6c14\u538b\u529b\u53ef\u80fd\u5bfc\u81f4\u4f4eDEF\u538b\u529b\u3002<\/p>\n<h3 id=\"can-a-bad-def-pump-cause-low-air-pressure-\">\u574f\u7684DEF\u6cf5\u4f1a\u5bfc\u81f4\u7a7a\u6c14\u538b\u529b\u4f4e\u5417\uff1f<\/h3>\n<p>\u4e0d\u4f1a\u76f4\u63a5\u5bfc\u81f4\uff0c\u56e0\u4e3a\u6cf5\u672c\u8eab\u4e0d\u4ea7\u751f\u7a7a\u6c14\u538b\u529b\u3002\u7136\u800c\uff0c\u4e00\u4e2a\u5931\u6548\u7684DEF\u6cf5\u53ef\u80fd\u65e0\u6cd5\u5728\u6b63\u5e38\u7a7a\u6c14\u538b\u529b\u4e0b\u7ef4\u6301\u8db3\u591f\u7684\u6db2\u4f53\u538b\u529b\u3002\u56e0\u6b64\uff0c\u7a7a\u6c14\u548c\u6db2\u4f53\u7cfb\u7edf\u5e94\u5206\u522b\u8bca\u65ad\u3002<\/p>\n<h3 id=\"how-do-you-check-for-air-leaks-in-the-def-system-\">\u5982\u4f55\u68c0\u67e5DEF\u7cfb\u7edf\u4e2d\u7684\u7a7a\u6c14\u6cc4\u6f0f\uff1f<\/h3>\n<p>\u8981\u68c0\u67e5\u7a7a\u6c14\u6cc4\u6f0f\uff0c\u8bf7\u76ee\u89c6\u68c0\u67e5\u6240\u6709\u7ba1\u8def\u548c\u63a5\u5934\uff0c\u67e5\u627e\u88c2\u7f1d\u3001\u6298\u75d5\u6216\u677e\u52a8\u8fde\u63a5\u3002\u5728\u7cfb\u7edf\u52a0\u538b\u65f6\u4f7f\u7528\u80a5\u7682\u6c34\u67e5\u627e\u6cc4\u6f0f\u4f4d\u7f6e\u3002\u4e5f\u53ef\u4ee5\u5728\u5173\u95ed\u538b\u7f29\u673a\u540e\u6d4b\u91cf\u538b\u529b\u4e0b\u964d\u60c5\u51b5\u3002<\/p>\n<h3 id=\"what-are-the-most-common-places-for-def-system-air-leaks-\">DEF\u7cfb\u7edf\u7a7a\u6c14\u6cc4\u6f0f\u7684\u6700\u5e38\u89c1\u4f4d\u7f6e\u662f\u4ec0\u4e48\uff1f<\/h3>\n<p>\u7a7a\u6c14\u6cc4\u6f0f\u6700\u5e38\u89c1\u7684\u4f4d\u7f6e\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u63a5\u5934\u548c\u8fde\u63a5<\/li>\n<li>\u6a61\u80f6\u8f6f\u7ba1\u548c\u7ba1\u8def<\/li>\n<li>\u7a7a\u6c14\u538b\u7f29\u673a\u7684\u57ab\u5708\u548c\u5bc6\u5c01\u4ef6<\/li>\n<li>\u7a7a\u6c14\u5e72\u71e5\u5668\u6216\u6ee4\u6e05\u5668\u5916\u58f3<\/li>\n<\/ul>\n<h3 id=\"is-it-necessary-to-use-oem-parts-when-replacing-def-system-components-\">\u66f4\u6362DEF\u7cfb\u7edf\u7ec4\u4ef6\u65f6\u662f\u5426\u9700\u8981\u4f7f\u7528\u539f\u5382\uff08OEM\uff09\u96f6\u4ef6\uff1f<\/h3>\n<p>\u867d\u7136\u552e\u540e\u96f6\u4ef6\u53ef\u80fd\u4ef7\u683c\u8f83\u4f4e\uff0c\u4f46\u901a\u5e38\u5efa\u8bae\u5728SCR\u7b49\u5173\u952e\u6392\u653e\u7cfb\u7edf\u4e2d\u4f7f\u7528\u539f\u5382\u96f6\u4ef6\u3002\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u5408\u9002\u7684\u5b89\u88c5\u3001\u6b63\u5e38\u529f\u80fd\u53ca\u7b26\u5408\u89c4\u5b9a\u3002\u8bf7\u67e5\u9605\u7528\u6237\u624b\u518c\u6216\u7ecf\u9500\u5546\u4ee5\u83b7\u5f97\u5177\u4f53\u5efa\u8bae\u3002<\/p>\n<h3 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