{"id":245,"date":"2015-12-10T15:21:00","date_gmt":"2015-12-10T14:21:00","guid":{"rendered":"https:\/\/www.planetzapp.de\/rip\/?p=245"},"modified":"2025-12-08T15:33:14","modified_gmt":"2025-12-08T14:33:14","slug":"gm-engine-trouble-codes-88-to-90-350cui-vin-k","status":"publish","type":"post","link":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/2015\/12\/10\/gm-engine-trouble-codes-88-to-90-350cui-vin-k\/","title":{"rendered":"GM Engine Trouble Codes &#8211; &#8217;88 to &#8217;90 350cui VIN K"},"content":{"rendered":"\n<p>List of engine diagnostic codes provided by the On-Board Diagnostic (ODB).<\/p>\n\n\n\n<p>Applies to 350cui VIN K 1988-1990<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds<\/li>\n\n\n\n<li>14 Coolant temperature sensor signal indicates a temperature of over 275\u00b0 F for 2 seconds<\/li>\n\n\n\n<li>15 Coolant temperature sensor signal indicates a temperature colder than -27\u00b0 F for 30 seconds after the engine has been running for at least 30 seconds<\/li>\n\n\n\n<li>21 TPS voltage was above 2.5 volts for 8 seconds when the MAP sensor signal showed manifold vacuum to be 15 pounds or more<\/li>\n\n\n\n<li>22 TPS voltage was under 0.2 volts for 2 seconds when the engine was running<\/li>\n\n\n\n<li>23 Inlet air temperature sensor signal showed an air temperature below -22\u00b0 F after the engine has been running for 5 minutes<\/li>\n\n\n\n<li>24 Vehicle Speed Sensor (VSS) Circuit<\/li>\n\n\n\n<li>25 Inlet air temperature sensor signal showed an air temperature over 302\u00b0 F after the engine has been running for 5 minutes<\/li>\n\n\n\n<li>32 EGR open command did not change MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal<\/li>\n\n\n\n<li>33 MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 4%<\/li>\n\n\n\n<li>34 MAP sensor signal voltage was too low (high vacuum) when engine speed was under 1200 RPM or the engine speed was over 1200 RPM with a throttle position angle above 21%<\/li>\n\n\n\n<li>35 Idle Air Control (IAC) System<\/li>\n\n\n\n<li>42 The EST signal did not change when the ECM applied bypass voltage to the ignition module<\/li>\n\n\n\n<li>43 The ECM did not detect a knock signal during near wide open throttle operation with coolant temperature above 194\u00b0 F or the knock signal was present for 5 seconds or more during normal engine operation. Electronic Spark Control (ESC) Circuit<\/li>\n\n\n\n<li>44 Oxygen sensor voltage was under 0.2 volts for 50 seconds of closed loop operation (Lean Exhaust Indicated)<\/li>\n\n\n\n<li>45 Oxygen sensor voltage was over 0.7 volts for 30 seconds of closed loop operation with a throttle angle between 2% and 20% (Rich Exhaust Indicated)<\/li>\n\n\n\n<li>51 PROM error. (MEM-CAL)<\/li>\n\n\n\n<li>52 CALPAK error. Fuel CALPAK Missing<\/li>\n\n\n\n<li>53 System Over Voltage<\/li>\n\n\n\n<li>54 Fuel pump voltage was not present at fuel pump sense line for 2 seconds after the ECM has sent the fuel pump on command (Low Voltage)<\/li>\n\n\n\n<li>55 ECM error. Replace ECM. Faulty ECM<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>List of engine diagnostic codes provided by the On-Board Diagnostic (ODB).<\/p>\n","protected":false},"author":1,"featured_media":246,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to"],"_links":{"self":[{"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/posts\/245","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/comments?post=245"}],"version-history":[{"count":1,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/posts\/245\/revisions"}],"predecessor-version":[{"id":247,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/posts\/245\/revisions\/247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/media\/246"}],"wp:attachment":[{"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/media?parent=245"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/categories?post=245"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rustinpeace.rocks\/rip\/index.php\/wp-json\/wp\/v2\/tags?post=245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}