2001venture van service engine soon light stays on

My 01 Chevy venture just got a new fuel pump put in gas gauge still isn't working proper so had another fuel pump put in same problem. My relay fuse is good fuel pump fuse is good. I have to have my wires checked, make sure my sensor on top of pump connector wires are good. What else can I be looking for?

When i had this issue, it was my gas cap not being on properly... took 3 days for it to reset itself.

take about 20 minutes if you have to tools handy. You have 4 02 sensors so be sure to have the tech tell you which one.

Hi by disconnecting the negative cable for at least 10 minutes reconnect cable and check engine light should turn off if it stays on then you have a defective sensor scan to repair as needed

Make sure the gas cap is on tightly. A loose or faulty gas cap can cause an intermittent check engine light. Hope this helped and best wishes.

Good morning

The gas cap was not tight enough...light is off

the 2 codes are

P0134 02 Sensor Circuit no activity Detected (bank 1 sensor 1)
first check your fuses check the wiring to the sensor(the sensor is on the exhaust in front of the engine-open the hood and look down) if the fuses and the wiring look good replace the O2 sensor there are 2 types of sensors original equipment(oe) style and universal the oe style has a connector you just plug in, the universal you have to hard wire in

the 2nd code is Mass Air Flow (MAF) Circuit Low Input
check the wireing, make shure theres a good connections
you said that you already replaced this sensor so im going to recomend that you go after the other code first

deal with the oxygen sensor then reset the computer and see what codes come back

hi, this is just a reset issue. sometimes the CPU can become confused. the original warning that informed you about your gas cap is still in the cpu's memory. you will have to reset the cpu and, this will clear the warning. After the reset, it will stay off. chevy cpu's tend to do this from time to time.

I believe this is an evaporative system leak such as a loose gas cap or leak in an evaporative system line.