{"id":22121,"date":"2024-09-23T00:45:30","date_gmt":"2024-09-23T00:45:30","guid":{"rendered":"https:\/\/www.obd2tool.com\/blog\/?p=22121"},"modified":"2024-09-26T00:48:14","modified_gmt":"2024-09-26T00:48:14","slug":"jcb-tier-4-intake-manifold-1-air-temperature-sensor-voltage-error-troubleshooting-guide","status":"publish","type":"post","link":"https:\/\/www.obd2tool.com\/blog\/jcb-tier-4-intake-manifold-1-air-temperature-sensor-voltage-error-troubleshooting-guide\/","title":{"rendered":"JCB Tier 4 &#8211; Intake Manifold 1 Air Temperature Sensor Voltage Error &#8211; Troubleshooting Guide"},"content":{"rendered":"<p>This guide addresses how to resolve the issue of the Intake Manifold 1 Air Temperature Sensor voltage being too high or showing an open circuit on JCB Tier 4 engines (K4735), fault code SPN 1132, FMI 3.<\/p>\n<h4>Related Contents:<\/h4>\n<ul>\n<li class=\"thumb\"><a href=\"https:\/\/www.obd2tool.com\/goods-4451-JCB-Electronic-Service-Tool-JCB-Diagnostic-Interface.html\"><img src=\"https:\/\/www.obd2tool.com\/images\/202409\/goods_img\/4451_G_1725357343332.jpg\" alt=\"JCB Heavy Duty Truck Diagnostic Tool JCB Electronic Service Tool with JCB ServiceMaster 4 V1.73.3 or V24.09\" \/><\/a><\/li>\n<li class=\"goodsName\">\n<div class=\"goods-name-text\"><a href=\"https:\/\/www.obd2tool.com\/goods-4451-JCB-Electronic-Service-Tool-JCB-Diagnostic-Interface.html\"> JCB Heavy Duty Truck Diagnostic Tool JCB Electronic Service Tool with JCB ServiceMaster 4 V1.73.3 or V24.09 <\/a><\/div>\n<\/li>\n<\/ul>\n<ul>\n<li class=\"thumb\"><a href=\"https:\/\/www.obd2tool.com\/goods-10573-JCB-Service-Master-4-Diagnostic-Software.html\"><img src=\"https:\/\/www.obd2tool.com\/images\/202409\/goods_img\/10573_G_1726213788280.jpg\" alt=\"JCB Service Master 4 V24.09 Diagnostic Software 2024.09\" \/><\/a><\/li>\n<li class=\"goodsName\">\n<div class=\"goods-name-text\"><a href=\"https:\/\/www.obd2tool.com\/goods-10573-JCB-Service-Master-4-Diagnostic-Software.html\"> JCB Service Master 4 V24.09 Diagnostic Software 2024.09 <\/a><\/div>\n<\/li>\n<\/ul>\n<h3>Issue Description<\/h3>\n<p>The temperature signal from Intake Manifold 1 is detected to be above its normal operating range.<\/p>\n<h3>Possible Causes:<\/h3>\n<ul>\n<li><strong>Faulty Wiring<\/strong>: The wiring connected to the intake manifold temperature sensor may be damaged or compromised.<\/li>\n<li><strong>Defective Sensor<\/strong>: The intake manifold temperature sensor itself may be malfunctioning.<\/li>\n<\/ul>\n<h3>Engine Control Module (EEM) Response<\/h3>\n<ul>\n<li>The fault code (FC) is logged in the system.<\/li>\n<li>A warning light is illuminated on the dashboard.<\/li>\n<li>Engine performance is reduced to &#8220;degradation level 1.&#8221;<\/li>\n<li>An active error is communicated via CAN.<\/li>\n<\/ul>\n<h3>Step-by-Step Solution<\/h3>\n<ol>\n<li><strong>Save and Clear the Error Log<\/strong>:\n<ul>\n<li>Save the existing error log and then delete it.<\/li>\n<li>Restart the ECU (Engine Control Unit) after clearing the log.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Monitor for Recurrence<\/strong>:\n<ul>\n<li>If the error reappears during the next operating cycle, follow these steps:<\/li>\n<\/ul>\n<\/li>\n<li><strong>Inspect Wiring and Connectors<\/strong>:\n<ul>\n<li>Examine the wiring leading to the intake manifold temperature sensor for any signs of damage or wear.<\/li>\n<li>Check the sensor plug and the pin contact surfaces for signs of oxidation or poor connection.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Test the Sensor<\/strong>:\n<ul>\n<li>Test the intake manifold temperature sensor to confirm whether it is functioning correctly.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>By following this procedure, you should be able to identify and resolve the issue.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>This guide addresses how to resolve the issue of the Intake Manifold 1 Air Temperature Sensor voltage being too high<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":1,"featured_media":22123,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[65,2959],"tags":[2651],"views":1856,"_links":{"self":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/22121"}],"collection":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/comments?post=22121"}],"version-history":[{"count":1,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/22121\/revisions"}],"predecessor-version":[{"id":22122,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/22121\/revisions\/22122"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media\/22123"}],"wp:attachment":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media?parent=22121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/categories?post=22121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/tags?post=22121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}