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Problem Reported: Check Engine and D4 Lights Flashing
May 27, 2010, 11:08 AM
<p>The 1998-2014 Acura TL V6 may develop issues with the automatic <a href="/transmission">transmission</a>.</p> <p>Rough shifting may occur, and the &ldquo;D4&rdquo; light and check engine may begin to blink. The <a href="/symptoms/check-engine-light">check engine light</a> will also illuminate, and <a href="/trouble_codes_1">OBD trouble codes</a> <a href="/OBD-II-Code-P0700">P0700</a>, <a href="/OBD-II-Code-P0730">P0730</a>, <a href="/OBD-II-Code-P0740">P0740</a>, <a href="/OBD-II-Code-P0780">P0780</a>, P1768 and/or P1768 will be stored in the computer.</p> <p>If the transmission shifts roughly, the failure is very likely mechanical failure of the transmission. If the transmission performs normally, a faulty sensor, or dirty<a href="/automatic-transmission-fluid"> transmission fluid</a> may be the case.</p> <p>In most cases, it is necessary to use professional diagnostic equipment to provide a diagnosis, and complete the repair.</p> <p>The longevity of the transmission is dependent on strict adherence to the manufacturer's recommendation for ATF <a href="/how-to-pick-a-maintenance-schedule">replacement intervals</a> and procedure.</p>
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