Old ECU codes showing up after new engin intalled!
01-16-2019, 04:20 PM
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Old ECU codes showing up after new engin intalled!
Hey guys I just recently put a new engine in my 2006 rx8 its a manual tranny it runs perfectly fine but I have the check engine light on and its giving me the same exact codes I was getting in my old engine how can I do a real ECU reset that really works?
01-16-2019, 05:10 PM
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I got the P2070 ,P0300 and something with the intake temp sensor , these were the exact same code before engine swap and I have erased them with my OBD scanner and I also did the reset removing the positive from the battery and turning key to on position for 30 seconds, and it did reset but comes right back up! My OBD scanner said something about relearning the timming position sensor! Not sure how that works!
01-16-2019, 06:57 PM
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Yah, if you clear them and they come back, the codes are real.
P0300
Any time you mess with the eccentric shaft sensor (such as when you remove it when replacing the engine), you need to force the ECU to re-learn the profile of the tone wheel.
Follow these directions: https://www.rx8club.com/series-i-tro...3/#post2923345
P2070
If you had this before and after the engine replacement, you have a problem with your secondary shutter valve (SSV).
Type "site:rx8club.com p2070" into google (without quotes) to get info on troubleshooting this problem.
The intake temperature sensor is inside the mass air sensor (MAF). Make sure you reconnected the MAF correctly. If it's connected, check the connector and wiring for damage. If they both look good, buy some MAF cleaner at an auto parts store and clean it thoroughly. If you're still getting this code, replace the MAF.
P0300
Any time you mess with the eccentric shaft sensor (such as when you remove it when replacing the engine), you need to force the ECU to re-learn the profile of the tone wheel.
Follow these directions: https://www.rx8club.com/series-i-tro...3/#post2923345
P2070
If you had this before and after the engine replacement, you have a problem with your secondary shutter valve (SSV).
Type "site:rx8club.com p2070" into google (without quotes) to get info on troubleshooting this problem.
The intake temperature sensor is inside the mass air sensor (MAF). Make sure you reconnected the MAF correctly. If it's connected, check the connector and wiring for damage. If they both look good, buy some MAF cleaner at an auto parts store and clean it thoroughly. If you're still getting this code, replace the MAF.
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