2005 Mazda Mazdaspeed MX-5 Miata may exhibit no-start or stalling after PCM/ECM replacement. Follow proper reinstall to avoid misfire codes and ensure smooth operation.
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2004 Mazda Mazdaspeed MX-5 Miata PCM and ECM Replacement Guide
Symptoms of a failing PCM/ECM in a 2004 Mazda Mazdaspeed MX-5 Miata 1.8L include no-start and MIL codes like P2004. Replacement labor is 0.5–0.8 hours plus a 0.5-hour relearn.