OBD2 Scanner won't connect, fuel pump does not work?!?


Asked by Marc Sep 04, 2017 at 06:39 PM about the 2002 Honda Passport 4 Dr LX 4WD SUV

Question type: Maintenance & Repair

My 02 passport died and wouldn't start... went
through everything and had no fuel pressure,
figured fuel pump... so replaced pump, still
nothing... hooked my scanner to it and it would no
longer read anything... gives me a connection
error: cannot connect... PCU has been replaced on
it before I go it. Motor replaced shortly after I got it.  
Kinda stumped

7 Answers


Did you check wiring on OBD port to computer?


Scanner worked before it died.

1 people found this helpful.

No power at all.. I'm thinking maybe there is a relay, or something I missed... I have used the scanner several times on it before this problem...

1 people found this helpful.

Connect to known working ECU, to make sure it is not that ECU. Then check all the fuses, begin with the under hood fuses, then the under dash fuses. Use a tester to check for live at the fuel pump when the key is set to on. Check for other non working electrical items in the car.


That is no power at the pump, bit the motor turns over fine...

2 people found this helpful.

I use this professional OBDII scanner to read the live data and see if there are any fault codes. I have tried it while driving the vehicle and I got more accurate data about the engine performance and other systems .It is very useful.

Your Answer:


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