Q: my engine light still comes on after i replaced the 02 sensors and the idle air control valve .now the code is low voltage on bank
my engine light still comes on,for low voltage on bank one sensor one its new Bosch. i changed the idle air control valve and cleaned the map sensor witch is very clean. what is wrong with my car.i think its time to junk her. all the wires are good and intact.
My car has 213000 miles.
My car has an automatic transmission.
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The codes describe the conditions in the circuit. A low sensor voltage code may not mean the sensor is bad, it might mean there is a problem in the wiring harness or in the relay for the sensor heater. I’m sure it can be fixed by someone with knowledge of the system, but you might be right about giving up on the car. When they get that many miles it seems you are always chasing one problem or another and every time it costs a few hundred dollars. It adds up fast. Meanwhile, contact YourMechanc to have a technician come out to your home or office to check out your Buick and let you know what it is going to take.
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