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Fuel gauge on my Mitsubitshi Pajero mk2 has started reading full is this a short or an open circuit and any ideas where to start looking. I did try disconecting multi plug on sensor but gauge still reads full.

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The answer for this is simple the fuel guage sending unit is defective, it is in the fuel tank, nothing else will cause this type of symtom.

Posted on Oct 16, 2008

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Posted on Jan 02, 2017

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The fuel gauge on my 01 caravan 2.4l reads full when running, and only reads 1/4 when off, any ideas what it could be?


Many cars do this to discourage gas theft. If the car fuel gauge only shows 1/4 full, a potential thief may not bother to steal 2 or 3 gallons of gas. This is very normal.

If the gauge is stuck on full and you are sure the tank isn't full, you have a sensor sending wrong information to the dash gauge. Most cars now have a single fuel pump and sending unit that can be replaced by a mechanic.

Jan 09, 2015 | 2001 Dodge Caravan

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2000 Dakota quad cab fuel gauge wont work, jumps to full when started, fuel pump has been replaced. What next?


Check for a frayed wire touching metal and grounding out. The gauge works on resistance and it registering full indicates a short to ground. Either that or your gauge itself is bad.

Sep 01, 2014 | 2000 Dodge Dakota Quad Cab

1 Answer

Have code 0463 fuel levelcircut input high what do I look for


There is no module under the dash on your vehicle .
P0463 - Fuel Level Sensor A Circuit High Description: The powertrain control module (PCM) monitors the fuel level input (FLI) circuit for electrical failure. The test fails when the signal moves above the maximum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank. Possible Causes:
  • Fuel pump (FP) module concern
  • Incorrectly installed fuel gauge
  • Damaged instrument cluster
  • FLI shorted to VPWR
  • CASE GND circuit open
  • Overfilled fuel tank
  • Damaged fuel gauge
Diagnostic Aids: See the diagnostic aids for DTC P0460. Application Key On Engine Off Key On Engine Running Continuous Memory Ranger GO to Pinpoint Test HX . All others Refer to the Workshop Manual Section 413-01, Instrument Cluster for fuel level indicator diagnosis.
You start by taking to Dealer or someother qualified repair shop .
Instrument Cluster Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1202 Fuel Sender Circuit Open Instrument Cluster Go To Pinpoint Test B . B1204 Fuel Sender Circuit Short to Ground Instrument Cluster Go To Pinpoint Test B .

Aug 02, 2017 | 2006 Ford Taurus

1 Answer

Getting computer code p1665 fuel level output circuit. Fuel gauge appears to be shorting out because it is always reading full


CODE P1665 - EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION CONDITIONS.POSSIBLE CAUSES / VENT SOLENOID CONTROL CIRCUIT OPEN SHORTED TO GROUND OR TO SYSTEM POWER / VENT SOLENOID POWER CIRCUIT IS OPEN CHECK THE ENG CNTL FUSE / EVAP VENT SOLENOID IS DAMAGED OR HAS FAILED / PCM HAS FAILED.

Nov 04, 2010 | 1999 Oldsmobile Alero

1 Answer

Fuel gauge will not read when tank is full


sounds like a bad sending unit(verify by shorting the wires to the gauge(will read full)then opening the circuit(will read empty)

Jul 10, 2010 | 1996 Chevrolet Suburban

2 Answers

Fuel Gauge


Most of the time it is the Sending unit in the tank

Dec 27, 2009 | 2000 Kia Sportage

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1999 gmc jimmy fuel gauge reads empty, pulled fuel tank test sending unit and it ohms out ok??Any wiring issues to look for


look for a short in the sending wiring, empty means the circuit is closed, open circuit full

Nov 28, 2009 | 1999 GMC Jimmy

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My 2000 Chevy Impala fuel gauge reads empty.


sending unit on fuel pump is bad, the sending unit shorts out gauge will go to empty or full, never read right, turn on switch ,it goes to full or empty, ,check the pump,hope this helps,thanks robert b.

Jun 27, 2009 | 2000 Chevrolet Impala

2 Answers

98 ford ranger fuel gauge not working


The float on the sending unit could be jammed of your have a short in the harness.

Check the harness first and pay attention to the connections, if there ok then it's the float on the sending unit on the gas tank.

Sorry for the bad news but it make start to work again any time if it is the float.

Good luck, and hope this helps

Apr 12, 2009 | 1998 Ford Ranger SuperCab

2 Answers

Fuel gauge not working all the time.


This is a normal concern.
The instrument cluster uses 4 different operating modes to calculate the fuel level:
Anti-slosh (default mode)
Key OFF fueling
Key ON fueling
Recovery
After a fuel fill up, the time for the fuel gauge to move from empty (E) to full (F) ranges from 2 seconds to 55 minutes depending on which operating mode the fuel gauge is in.
The default fuel gauge mode is called the anti-slosh mode. To prevent fuel gauge changes from fuel slosh (gauge instability due to changes in fuel sender readings caused by fuel moving around in the tank), the fuel gauge takes approximately 55 minutes to go from empty (E) to full (F).
The key OFF fueling mode (2 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The key must be in the OFF position throughout the entire refueling of the vehicle.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
The instrument cluster must receive a valid key ON fuel sender reading within 1 second of the key being put into the RUN position. The key ON sample readings are considered valid if the fuel sender reading is between 15 ohms ± 2 ohms and 160 ohms ± 4 ohms.
If these conditions are not met, the fuel gauge stays in the anti-slosh mode, which results in a slow to read full (F) event.
The key ON fueling mode (approximately 90 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The transmission is in PARK (P).
The key is in the RUN position.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
In key ON fueling mode, a 30-second timer activates after the transmission is put into the PARK (P) position (automatic transmissions). When the 30-second time has elapsed and at least 15% of the vehicle's fuel capacity has been added, the fuel gauge response time is 90 seconds to read from empty (E) to full (F). When the transmission is shifted out of PARK (P), the fuel gauge strategy reverts to the anti-slosh mode. The key on refueling mode prevents slow to read full events from happening if the customer refuels the vehicle with the key in the RUN position.
Recovery mode is incorporated into the instrument cluster strategy to recover from a missing fuel level input during a refueling event. Missing fuel level inputs result from intermittent opens in the fuel sender or its circuits. Recovery mode (empty [E] to full [F] approximately 20 minutes) is initiated when the following 2 conditions are met:
The instrument cluster is in the anti-slosh (default) mode.
The actual fuel level in the tank is greater than what is being displayed by the fuel gauge

Feb 18, 2009 | 1983 Mercury Grand Marquis

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