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take it to the nearest advance auto they plug in a small computer and it will tell you exactly what those code mean for free or you can buy your own diagnostic computer for about $80
Code 463 is for a problem with the fuel sending unit circuit. The most common cause is a faulty sending unit or a problem with the wiring harness to the tank.
The P0463 code (Fuel Level Sensor Circuit High Voltage) means that your fuel guage circuit is open. To fix the fuel guage, the tank must come out to replace the sending unit. Personally I wouldn't worry about it too much. Use your trip guage and fill up after 200/250 miles. You'll never run out.
It means there is a problem in the fuel sending unit circuit. The PCM uses a 5v reference on this system to calculate fuel level. There is either a problem in the sending unit or related wires.
PO 404 exhaust gas reciculation circuit, range or performance problems
PO 405 exhaust gas reciculation sensor circuit low
PO 463 fuel level sensor circuit high input
po463 is the fuel level sensor. the oxygen sensors are the ones that send a signal to the computor to adjust the rich/lean fuel mixture. Have them checked.
what year /model
2006 silverado p0463 code only in park, is it wire chaffing?
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