Have you received DTC: 16985 - Internal Control Module: Memory Check Sum Error

[koccorey]

Could you let us know what the problem end up being?

Will do.

[burkechrs1]

That happened to me a couple years ago and I had the dealership update my ecu with the newest software. Never came back since. Been on stock tune, revo stage 2 as well has uni stage 2

[koccorey]

Could you let us know what the problem end up being?

Scanned my car and it turns out the check sum error code is gone however now 3 codes popped up after driving just over 100 miles. They are P1296/cooling system malfunction, P0441/evaporative emission system incorrect purge flow and P0171/system too lean bank 1.
Before Eurocode fixed the check sum error the only other code I had was P1296/cooling system malfunction so I changed out the temp sensor. Is anyone familiar with these codes? I need to get smogged asap.

[koccorey]

I found the problem to the P0441 & P0171 codes. I have a torn hose that comes out of the bottom of the intake manifold (small L hose) so should be an easy fix. I'll just have to check my thermostat for the P1296 code since I already replaced the sensor. I'll also do a pressure test to see if I have any other leaks. The memory check sum code hasn't come back so far.

[koccorey]

That happened to me a couple years ago and I had the dealership update my ecu with the newest software. Never came back since. Been on stock tune, revo stage 2 as well has uni stage 2

Are you saying that you have Revo and Unitronic software on the same computer?

[koccorey]

I found the problem to the P0441 & P0171 codes. I have a torn hose that comes out of the bottom of the intake manifold (small L hose) so should be an easy fix. I'll just have to check my thermostat for the P1296 code since I already replaced the sensor. I'll also do a pressure test to see if I have any other leaks. The memory check sum code hasn't come back so far.

Well it's been about 500 miles since the APR memory check sum error code fix and 200 miles since I fixed the leaking pcv hose and no codes so far so I would say it's fixed.

For anyone with this code you should take your car back to where ever you had the car chipped and tell them about this thread so they can contact APR to get instructions on the fix.