{"id":78480,"date":"2025-08-08T10:38:19","date_gmt":"2025-08-08T15:38:19","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78480"},"modified":"2025-08-08T10:38:19","modified_gmt":"2025-08-08T15:38:19","slug":"p0966-obd2-pressure-control-solenoid-b-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low","title":{"rendered":"P0966 OBD2: Pressure Control Solenoid &#8220;B&#8221; Control Circuit Low"},"content":{"rendered":"<p>OBD-II Code P0966 is defined as a Pressure Control Solenoid &#8220;B&#8221; Control Circuit Low. This code indicates that there is a problem with the electrical circuit associated with the pressure control solenoid, which is critical for the operation of the vehicle&#8217;s transmission.<\/p>\n<h2>What Does the P0966 Code Mean?<\/h2>\n<p>The P0966 code signifies that the Transmission Control Module (TCM) or Engine Control Module (PCM) has detected a fault in the Pressure Control Solenoid &#8220;B&#8221; circuit, which is responsible for regulating the hydraulic pressure needed for smooth gear shifting. When this circuit is low, it can lead to transmission issues.<\/p>\n<h2>What Causes the P0966 Code?<\/h2>\n<p>The P0966 code can be triggered by several factors, including:<\/p>\n<ul>\n<li>Failure of the Transmission Control Module (TCM)<\/li>\n<li>Low transmission fluid level<\/li>\n<li>Failure of the transmission pressure control solenoid<\/li>\n<li>Wiring issues, such as damaged or corroded wires in the solenoid circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0966 Code?<\/h2>\n<p>Common symptoms associated with the P0966 code include:<\/p>\n<ul>\n<li>Increased fuel consumption<\/li>\n<li>Transmission may not shift properly<\/li>\n<li>Delayed or harsh shifting<\/li>\n<li>Potential slipping of gears<\/li>\n<\/ul>\n<h2>How Serious Is the P0966 Code?<\/h2>\n<p>The P0966 code is considered urgent, as it indicates significant malfunctions that can lead to severe damage to the vehicle&#8217;s transmission. Ignoring this code can result in costly repairs and may pose safety risks to the driver and passengers.<\/p>\n<h2>How to Diagnose the P0966 Code<\/h2>\n<p>To properly diagnose the P0966 code, follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P0966 code and check for any additional codes.<\/li>\n<li>Inspect the transmission fluid level and condition; low or dirty fluid can lead to issues.<\/li>\n<li>Check the wiring and connectors related to the pressure control solenoid for any signs of damage or corrosion.<\/li>\n<li>Test the pressure control solenoid for proper operation using a multimeter.<\/li>\n<li>Evaluate the Transmission Control Module (TCM) for faults or failures.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0966 Code<\/h2>\n<p>Typical repairs for addressing the P0966 code may include:<\/p>\n<ul>\n<li>Replacing the transmission fluid if it&#8217;s low or contaminated.<\/li>\n<li>Repairing or replacing damaged wiring or connectors.<\/li>\n<li>Replacing the faulty transmission pressure control solenoid.<\/li>\n<li>Replacing or reprogramming the Transmission Control Module (TCM) if necessary.<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0966 Code?<\/h2>\n<p>The cost to fix the P0966 code can vary widely based on the underlying issue. On average, repairs may range from $100 to $500, depending on whether it involves simple repairs like fluid replacement or more complex repairs like TCM replacement.<\/p>\n<h2>Can I Fix the P0966 Code Myself?<\/h2>\n<p>While some aspects of diagnosing and fixing the P0966 code can be done by a knowledgeable DIYer, such as checking fluid levels and inspecting wiring, it is recommended to seek professional help for more complex issues like replacing the TCM or pressure control solenoid. Proper tools and experience are essential for these repairs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>OBD-II Code P0966 is defined as a Pressure Control Solenoid &#8220;B&#8221; Control Circuit Low. This code indicates that there is a problem with the electrical circuit associated with the pressure control solenoid, which is critical for the operation of the vehicle&#8217;s transmission. What Does the P0966 Code Mean? The P0966 code signifies that the Transmission &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92468,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-78480","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P0966 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0966 code, what causes pressure control solenoid &#039;B&#039; control circuit low, and how to diagnose and fix common issues to maintain optimal engine performance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.emanualonline.com\/blog\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0966 OBD2: Pressure Control Solenoid &quot;B&quot; Control Circuit Low\" \/>\n<meta property=\"og:description\" content=\"OBD-II Code P0966 is defined as a Pressure Control Solenoid &quot;B&quot; Control Circuit Low. This code indicates that there is a problem with the electrical\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-08T15:38:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JC Landry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0966 OBD2: Pressure Control Solenoid &#8220;B&#8221; 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0966-obd2-pressure-control-solenoid-b-control-circuit-low-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"OBD-II Code P0966 is defined as a Pressure Control Solenoid &#8220;B&#8221; Control Circuit Low. This code indicates that there is a problem with the electrical circuit associated with the pressure control solenoid, which is critical for the operation of the vehicle&#8217;s transmission. What Does the P0966 Code Mean? The P0966 code signifies that the Transmission&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78480","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=78480"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78480\/revisions"}],"predecessor-version":[{"id":85179,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78480\/revisions\/85179"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/92468"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}