Hey guys, I just logged about 15 mins of data for my car today and threw two codes in the process, Code 33 MAP sensor high and Code 21 Throttle Position high.

I am just wondering if anyone knows the cause of these codes, the SES light just flashed at me twice during logs, it did not stay on...

If anyone would like to look at my file I can email it to you.

Thanks in advance!

 

DTC 33 MAP high will set when:
less than 3%tps (throttle blades closed) and MAP greater than 80 kPa.
Basically it will come up anytime your idle drops really low like 200 to 500 rpm and you have very little vacuum. High Map is low vacuum.

DTC 21 will set when:
tps is greater than 2.5 volts at idle (less than 10 grams of air per second) for 5 seconds, or TPS voltage over 4.8 volts with ignition "on".

It happened to me when I had a bad vacuum leak in the IAC gasket. Just about any vacuum leak will cause this to happen as well as an aftermarket throttle body.