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Hi; i used OBD in my car, scaner say p0463 fuel level sensor A circuit low hight. so what is the part i need to fix?

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The float in your fuel tank has a connection problem or is starting to go bad.

Posted on Apr 07, 2011

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My gas gauge in my 2002 Pontiac Bonnivile shows empty all the time


Fuel Gauge Troubleshooting

Fuel Gage
The IPC displays the fuel level as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gage defaults to empty if:
• The PCM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
When the fuel level is less than a pre-determined value, the CHECK GAGES indicator illuminates.
DTC P0462
The fuel level sensor changes resistance based on fuel level. The PCM monitors the signal circuit of the fuel level sensor in order to determine fuel level. When the fuel tank is full, the sensor resistance is high and the PCM senses a high signal voltage. When the fuel tank is empty, the sensor resistance is low and the PCM senses a low signal voltage. The PCM uses the signal circuit of the fuel level sensor in order to calculate the total remaining fuel (%) in the tank. The PCM sends the fuel level percent via the class 2 serial data circuit to the IPC in order to control the fuel gage. The fuel level information is also used for misfire and EVAP diagnostics
DTC P0463 (3.8L)

How to test fuel gauge tank sending unit P0463 GM

Mar 29, 2017 | 2002 Pontiac Bonneville

1 Answer

P0463 is code i got is car safe to drive seems to be running great 2005 jeep liberty


It should be okay to drive. 0463 is fuel level sensor circuit high input- the low fuel level sensor in the gas tank is acting up.

Nov 03, 2013 | 2005 Jeep Liberty

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P0463 fuel level sensor circuit high


Code 720 is for a problem with the speed sensor in the transmission. The sensor and circuit would need to be checked.
Code 463 is saying the signal from the gas tank sending unit is too high. The sending unit uses a resistor to send a signal back to the computer and the gas gauge. Again, the sending unit and the circuit would need to be checked out.

May 01, 2013 | 1998 Jeep Grand Cherokee

1 Answer

Code that came up on the OBD is P0463 Fuel level sensor A circuit high input what does that mean and how can it be fix?


DTC P0463 - Fuel gauge sender unit circuit high input
• The PCM monitors the fuel tank level and input voltage from the fuel gauge sender unit when the engine is running. If the input voltage is more than 2.5 V and fuel tank level is empty, the PCM determines that the fuel gauge sender unit circuit input voltage is high.

Diagnostic support note
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.

Possible cause:
• Fuel gauge sender unit malfunction
• Instrument cluster malfunction
• PCM malfunction

Feel free to contact us if need additional details. Good luck.

Sep 08, 2011 | 2001 GMC Yukon

1 Answer

Getting Code P0463 for a 2003 Ford Expedition. Any input how to fix or what that is?


The code P0463 means Fuel Level Sensor "A" Circuit High
To fix the code you need to replace the fuel sending unit

Jul 30, 2011 | Ford Expedition Cars & Trucks

1 Answer

My 2004 nissan sentra will not start, just turns over.obd code po455,po183 and po463 not sure what to check. I tried gas cap, took gas line off and turned car over but no fuel, it my be my fuel pump but...


P0183 = Fuel temperature sensor A circuit, high input

P0455 = evaporative emission (EVAP) control system leak detected (no purge flow or large leak)

P0463 = fuel level sensor circuit, high input.

Check to see if the charcoal (evap) canister is full of fuel. If so, empty it. Check for a faulty canister vent valve. Check for a short to ground in wiring to fuel temp sensor and fuel level sensor.

Feb 27, 2011 | Nissan Sentra Cars & Trucks

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