The fuel level sensor may fail resulting in erratic fuel gauge operation and illumination of the Check Engine Light. Replacement of the fuel sender assembly is recommended to correct this concern. A powertrain control module (PCM) software update may be necessary for the updated fuel level sensor to read correctly.
Check Engine Light and Erratic Fuel Gauge Operation on Honda Passport
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gas gage is off
I noticed the erratic fuel guage behavior last week. It was a one-time occurrence. I have seen no other instances. However, my Check Engine light came on this morning. This is the first time that I've ever seen the Check Engine light, and I've owned the vehicle for six years.
Check engine light on and off , plus fuel gauge bouncing back and fourth from full to empty.
I pit a new fuel pump with sending unit and it still didn't fix my issue with the fuel but the Honda dealer said the PCM needs a system update that could fix it but that's another 100 bucks
I have had this problem for 30k miles. I ran out of gas first time last week (forgot to reset odometer) so decided to look for fix. Dealership says fuel senser part is 400+ + 180 labor. Part on ebay is $30. Non oem, but wow.