I have SES and pulled the P0101 code (only code set). The car still seems to run well.

I've searched and the only thing i found, that gives me something to go on, is to check the pink wire on the MAF (thanks INJUNEER).

I implemented the imfamous "EGR simulator" circuit several hundred miles ago to avoid the P0400 DTC because of low backpressure (Longtubes), which has worked...no P0400.

Does anyone know if it is likely/unlikey that this EGR simulator circuit solution could be causing the P0101?

I plan to check the pink wire and also log with Autotap sometime today. I just thought I'd post to see if anybody has some insight.

 

What's the EGR simulator circuit?

-Chris

 

Someone on this board e-mailed me a schematic for it. I can look back and see / get the info, if you want.

Basically, attach a relay to the PCM's output to the EGR solenoid. The relay's output uses a 75 ohm ((2) 150 ohms, in parallel, in my case) resistor to put a small voltage drop on the MAP circuit.

Result: When the PCM commands the egr, MAP voltage drops a touch = PCM thinks EGR is working properly.

Its cool if you need to pass inspection via OBDII diagnosis.

I THINK that the system uses MAP to calculate MAF and compare it to measured MAF...if its not close, you get P0101...can anyone confirm that?

 

Interesting info. You might try the tuning forum.

Good luck. Here's a free TTT!

-Chris

 

Hey man, if someone has that schematic, could they email it to me?

superkia3@msn.com


Thanks,
Rich