P0101 - MAF System Performance
#1
P0101 - MAF System Performance
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.
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.
#3
Re: P0101 - MAF System Performance
Originally Posted by Chrisbequick
What's the EGR simulator circuit?
-Chris
-Chris
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?
#5
Re: P0101 - MAF System Performance
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08-23-2023 11:19 PM