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B2101 code?

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29K views 10 replies 7 participants last post by  Old Dogger  
#1 ·
So I started getting a B2101 code which states "ignition run/start input circuit low"

Can anyone provide any experience or input in what this means?

I check the spark plugs and spark plug wires and everything seems fine....I also didn't start getting the code until I relocated my evap can but I checked all the connections and it seems fine however I think I broke the sensor because I am also getting a PO455 code stating "evap system large leak" however there is no leak!
 
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#3 · (Edited)
The B2101 code is set when the Totally Integrated Power Module senses that the voltage that comes from the ignition switch in the start and run positions is too low.

The power comes out of the TIPM from fuse m27 through connector 6 pin 21 on a light blue wire with a red stripe. From there it goes into pin 5 on the ignition switch (still LB/RD). It comes out of the ignition switch on pin 3 on a pink with white stripe wire and goes to the TIPM through connector 7 pin 30 (PK/WT). If you have 12 volts on c7 pin 30 with the ignition switch in run, you may have a bad TIPM. The FSM says check this with a 12V test light. Presumably to load the circuit more than a multimeter.

If the light doesn't light on pin 30 or is dim, your problem is in the previously mentioned wiring or connections.