Hello all,

I need some help here, I'm due for inspection in a 2-3 weeks, so today I swapped out my AEM EMS and put the stock ECU in. I put the MAF back in and disconnected the AEM AIT, but plugged in the MAF plug.


I undid the wiring to the 5-Bar map sensor and ran the wires like stock to the stock MAP sensor.

I also swapped in the stock injectors.

so with everything done, I started up the motor and let it run for a few minutes and guess what I'm throwing 6 codes:

p0113- IAT sensor 1 circuit high input

p0102- maf or vaf a circuit low input

p2229- Barometric pressure circuit high

p0243- turbo/sup wastegate solenoid a malfunction

p0106- map/baro ckt range/perf


Can anyone help me to resolve this? I do recall that I have to go out and drive for like 100 miles or so before going for inspection, but this is really discouraging....

 

 

clear the codes and see if they return again

 

Just an update, I found my stock Boost control solenoid and plugged it back in....

I also took off the mAF plug and plugged it back in also.....


now I'm only down to two codes....

p0113- IAT sensor 1 circuit high input

p2229- Barometric pressure circuit high

 

Both of those are in the maf itself, maybe try a different one

 

That'll be my last resort.....

I will try one more thing tomorrow night....to see if the problem goes away and I get a "pass" on my OBD2 scanner

 

Stop unplugging the damn MAF with the key in the on position.

 

I did it in the off position

 

I disconnected the meth input wire to the ECU harness and soldered everything back together thinking it would solve my problem with the last 2 codes, but wrong....

These 3 codes still remain....

p0113- IAT sensor 1 circuit high input

p0102- maf or vaf a circuit low input

p2229- Barometric pressure circuit high

 

You need to reconnect the maf and baro wires to the ECU where they were cut in the AEM install.

 

I did..... struggled with it for a long time tonight soldering everything together....

There was only 1 wire from the ECU harness that was tapped, the red wire with the white stripe was cut, with the end going into the ECU tapped to the meth....


Nothing else is cut or tapped

 

You cannot unplug the maf with the key on at any time. If you do you will get those codes.

Reset them again and see if they come back.

Will the car start? What does it do?

 

The MAF is always plugged in.....

I disconnected the battery for like 3 minutes, hooked it back up.....

started the car, car starts fine, and starts quick, but it idles like crap at like 700-800 RPM's, bear in mind I have HKS 280's in there with the intake cams set at +2. exhaust at 0

I show the codes no matter what, and when I try to clear the codes with my OBD2 scanner the codes just comes back on....

 

The MAF wires have not been reconnected correctly. Check them again.

If you have a SAFC, wire it in also and check the MAF signal on the SAFC display to verify it shows a signal.

 

I dont have an SAFC

where else can I check the wiring for the MAF??? Not at the ECU harness right??? because only 1 wire was tapped there