{"id":1465,"date":"2025-10-14T11:04:29","date_gmt":"2025-10-14T11:04:29","guid":{"rendered":"https:\/\/www.way.com\/ask\/?p=1465"},"modified":"2025-10-14T11:04:29","modified_gmt":"2025-10-14T11:04:29","slug":"how-to-fix-p1259-code","status":"publish","type":"post","link":"https:\/\/www.way.com\/ask\/how-to-fix-p1259-code\/","title":{"rendered":"How to fix P1259 code\u00a0"},"content":{"rendered":"<p><i><span data-contrast=\"none\">Here are the other reasons that could be causing a P1259 code:<\/span><\/i><span data-ccp-props=\"{&quot;335559685&quot;:0}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"none\">The VTEC solenoid is defective. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">A broken VTEC oil pressure switch. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Damage to VTEC solenoid cables or connectors could result in an open or short circuit. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">The engine oil level or pressure may be lower than what&#8217;s required. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Presence of dirty, degraded, or unsuitable engine oil. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Failure of PCM. Since this is an uncommon cause, you need to check the fault somewhere else before replacing any control module.<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"none\">It\u2019s relatively easy to find the primary cause of this code. If you still have a hard time finding the reason behind the code, you could get a proper diagnosis by seeking professional help. They will do the following to diagnose it:<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"none\">On Bank 1, perform a VTEC Cylinder Balance test to ensure that all cylinders generate power. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Check for 12 volts at the solenoid connector while turning on the ignition switch to confirm it is working properly (RUN). <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Check for any issues with the engine&#8217;s oil pressure. Perform additional diagnostics on the vehicle if there is no or low oil pressure. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">On V-type engines, inspect and clean up all electrical connections in the circuit. If everything else checks out fine, check if there is good power production from each bank. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Check for any hissing noises and look for shorts in VTEC Control Solenoid Valve A and B circuits. Make sure the ignition switch is in the ON (RUN) position while doing this. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Even after resolving problems with the oil pressure or electrical issues, if the problem persists, then it\u2019s best to replace the VTEC solenoid. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"none\">Once diagnosed, you can go ahead and rectify the problem. Common fixes include: <\/span><\/p>\n<ul>\n<li><span data-contrast=\"none\">Checking whether the oil is due for servicing. If the oil is contaminated or the filter is clogged, replace both. Once it&#8217;s completed, clear the code before checking the engine. Don&#8217;t forget to check the oil pressure. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Another possible reason for the code could be a problem with the VTEC oil pressure switch. Try to have it repaired, but if you are replacing it, make sure to use an authentic oil pressure switch that suits your Honda\/Acura. <\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"none\">Inspect the VTEC system for any physical damage. Look through the solenoid, electrical circuit wires, connectors, and other components thoroughly. If you come across any damage, make sure to repair or replace it.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Here are the other reasons that could be causing a P1259 code:\u00a0 The VTEC solenoid is defective. \u00a0 A broken VTEC oil pressure switch. \u00a0 Damage to VTEC solenoid cables or connectors could result in an open or short circuit. \u00a0 The engine oil level or pressure may be lower than what&#8217;s required. \u00a0 Presence&hellip; <a class=\"more-link\" href=\"https:\/\/www.way.com\/ask\/how-to-fix-p1259-code\/\">Continue reading <span class=\"screen-reader-text\">How to fix P1259 code\u00a0<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1465","post","type-post","status-publish","format-standard","hentry","category-car-repair-maintenance","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to fix P1259 code\u00a0 - ask<\/title>\n<meta name=\"description\" content=\"What is the P1259 code in a car? 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