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Testing the evap flow sensor (p1443 code)
Hey guys, I pulled up some info when I was working on my car last week and I figured I'd share it with you. The code I had was P1443.
This is your EVAP flow sensor: ![]() Here in the engine compartment, I circled it: ![]() It is connected to the vacuum line from the back of the throttle body/plenum area to the sensor, then down to the charcoal canister. Here are the pins on it, labeled A,B, and C: ![]() Before you test the sensor, check for vacuum leaks in the system. Unplug the connector and pull the sensor out, then let it cool to room temp. Pin A:Ground Pin B: Power (reference voltage I think) Pin C: Signal Use a ohmmeter to measure the resistances between the following pins: A to C: Should read more than 25.5 Ohms. B to C: Should read between 25.65-28.35 Ohms. A to B: Should read 130 Ohms or less. If anyone finds something wrong in here just let me know and I'll fix it. |
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