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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.

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Old 10-05-2026, 11:49 PM   #1
hotrod1442
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Installing a New ECU Question

I have a 2013 FR-S that has been tripping P000A, and P0016 codes, after replacing all the cam phasers (did them all to be on the safe side), timing chains/tensioners, oil control valves, and cam position sensors, I'm still getting the P000A. P0016 codes.

After doing some research on this it seems like the next step would be to replace the ECU.

My question is if I purchase a new OEM ECU, is it a direct "plug & play" deal, or does the new ECU need some programming to get up and running again?
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Old 10-06-2026, 10:38 AM   #2
smackrel
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At the very least, I'm pretty sure your keys will need to be programmed to it, but hopefully someone more in the know will have a definitive answer.

Last edited by smackrel; 10-06-2026 at 10:39 AM. Reason: a word
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Old 10-07-2026, 05:01 AM   #3
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The exact part number printed on your ECU will, if bought from a dealer, come with the exact software you have now. You’ll still need to go through the ECU replacement immobilizer process, though. It may be lower risk for you to pay someone to do this for you.
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