When I replaced the TB gasket last weekend I removed the entire OEM air intake assembly. After putting it back together I got code P102, and the car went into 'restricted performance' mode. I had no codes prior to replacing the gasket. I finally got a chance to try to investigate the problem today. The causes are:

• Blocked air filter
• MAFS to ECM sensing circuit high resistance or open circuit
• MAFS to ECM sensing circuit intermittent short circuit to ground
• MAFS supply circuit open circuit or short circuit to ground
• MAFS failure

I verified that the air filter is not blocked. I tested for voltage on the 5 wires and got the following:

Wire Voltage

black/yellow 1.0
green/yellow ~.35
white/blue ~.35
black/green ~.35
blue/purple ~.35

I am not electrically proficient, so I am not sure what to do now. Any suggestions would be appreciated.

 

How's it running? if it's ok erase the code, did you disconnect the battery?

 

It is running fine, just won't exceed 3k rpm . I did disconnect the battery when I worked in the TB gasket. I erased the code, but it returned immediately.

During my drive to work this am I had the OBDII hooked up. I noticed that the MAF reading was 0 during the drive, but the IAT was reading correctly.

 

Okay, I was looking through the electrical schematic so that I could test the continuity of the MAF wiring. It was then that I noticed that one of the wires has a fuse in the engine management fuse box. Hmmmmm, pulled the fuse and... yep, blown fuse. Replaced with a new 10 amp fuse, cleared the code, and stomped on the gas. Man, I love that feeling!