Code
P0463
Generic
P — Powertrain
Fuel Level Sensor A Circuit High
AI status
Completed
Completed
100%
Causes
- Open or damaged wiring in the fuel level sensor circuit
- Short to battery voltage (B+) on the sender signal wire
- Corroded, loose or damaged connector at the fuel tank/module
- Failed fuel level sender or float assembly (often part of the pump module)
- Poor or missing ground for the sender or instrument cluster
- Faulty gauge cluster, body control module (BCM) or fuel level input circuit
Symptoms
- Malfunction Indicator Lamp (MIL/CHECK ENGINE) may be illuminated
- Fuel gauge stuck at or near full, or reads higher than actual level
- Inaccurate or erratic fuel gauge readings
- Possible stored history codes for fuel level circuit faults
- Vehicle drivability not commonly affected (usually gauge/telemetry only)
What to check
- Read and record freeze frame and live data for fuel level/fuel level voltage with key ON engine OFF
- Verify actual fuel tank level visually or with known quantity and compare to gauge/live data
- Inspect harness and connector at fuel pump/fuel tank module for corrosion, bent pins, water intrusion, or damage
- Backprobe the sender signal, reference and ground pins at the tank with key ON to measure voltage and continuity
- Wiggle harness and connectors while observing live data to find intermittent faults
- Check for aftermarket alarms, stereos, remote start or repairs that may have disturbed wiring
Signal parameters
- Signal type: typically an analog voltage or variable resistance to ground (varies by vehicle)
- Typical voltage range (key ON, engine OFF): approximately 0.2–4.8 V for most 0–5V systems (manufacturer dependent)
- High-voltage fault threshold: often ≈4.9–5.5 V or ‘open/over-range’ indication — consult vehicle data
- Typical resistance range (float dependent): can vary widely (approx. 10–250 Ω across travel on some units); consult service spec for exact values
- Expected connector pins: reference voltage (if used), sender signal, sender ground — verify pinout before testing
Diagnostic algorithm
- Confirm the code and note freeze-frame/live data values for fuel level and sender voltage
- Verify actual fuel level (visual or known fill) to validate gauge behavior
- Inspect the fuel pump/fuel tank module connector visually; disconnect and check pins for corrosion, bent or pushed-back terminals
- With key ON (engine OFF) backprobe the sender signal pin and measure voltage; note value and whether it corresponds to actual fuel level
- Check for a short to battery voltage on the signal wire: measure voltage between signal wire and chassis ground with harness connected and disconnected
- Disconnect the sender harness and measure resistance of the sender across its terminals; compare to manufacturer spec and observe change to gauge/BCM reading when disconnected
- Check continuity from sender ground pin to chassis battery negative; measure voltage drop while operating harness to detect poor ground
- Perform wiggle test of wiring while monitoring live data to catch intermittent opens/shorts
- If wiring and connector are good, bench-test or replace the fuel level sender or pump module assembly as required
- If sender and wiring test good, inspect/diagnose the receiving module (BCM/instrument cluster) per manufacturer procedures; check for blown fuses or failed modules
- Clear the code, test drive or cycle ignition, and verify the code does not return and that fuel level readings are correct
Likely causes
- Disconnected or corroded connector at the fuel pump/fuel tank module
- Broken signal wire insulated conductor contacting B+ or a fused feed
- Failed fuel level sender (open/short internally)
- Failed ground at tank or instrument panel
Fault status
Status
Fuel Level Sensor A Circuit High — sender signal voltage higher than expected (open/short to battery voltage or failed sender/wiring).
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Repair manuals
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Code
P0463
GWM
P — Powertrain
- High Fuel Level Sensor
AI status
Completed
Completed
100%
Causes
- Open or damaged wiring in the fuel level sensor circuit
- Short to battery voltage (B+) on the sender signal wire
- Corroded, loose or damaged connector at the fuel tank/module
- Failed fuel level sender or float assembly (often part of the pump module)
- Poor or missing ground for the sender or instrument cluster
- Faulty gauge cluster, body control module (BCM) or fuel level input circuit
Symptoms
- Malfunction Indicator Lamp (MIL/CHECK ENGINE) may be illuminated
- Fuel gauge stuck at or near full, or reads higher than actual level
- Inaccurate or erratic fuel gauge readings
- Possible stored history codes for fuel level circuit faults
- Vehicle drivability not commonly affected (usually gauge/telemetry only)
What to check
- Read and record freeze frame and live data for fuel level/fuel level voltage with key ON engine OFF
- Verify actual fuel tank level visually or with known quantity and compare to gauge/live data
- Inspect harness and connector at fuel pump/fuel tank module for corrosion, bent pins, water intrusion, or damage
- Backprobe the sender signal, reference and ground pins at the tank with key ON to measure voltage and continuity
- Wiggle harness and connectors while observing live data to find intermittent faults
- Check for aftermarket alarms, stereos, remote start or repairs that may have disturbed wiring
Signal parameters
- Signal type: typically an analog voltage or variable resistance to ground (varies by vehicle)
- Typical voltage range (key ON, engine OFF): approximately 0.2–4.8 V for most 0–5V systems (manufacturer dependent)
- High-voltage fault threshold: often ≈4.9–5.5 V or ‘open/over-range’ indication — consult vehicle data
- Typical resistance range (float dependent): can vary widely (approx. 10–250 Ω across travel on some units); consult service spec for exact values
- Expected connector pins: reference voltage (if used), sender signal, sender ground — verify pinout before testing
Diagnostic algorithm
- Confirm the code and note freeze-frame/live data values for fuel level and sender voltage
- Verify actual fuel level (visual or known fill) to validate gauge behavior
- Inspect the fuel pump/fuel tank module connector visually; disconnect and check pins for corrosion, bent or pushed-back terminals
- With key ON (engine OFF) backprobe the sender signal pin and measure voltage; note value and whether it corresponds to actual fuel level
- Check for a short to battery voltage on the signal wire: measure voltage between signal wire and chassis ground with harness connected and disconnected
- Disconnect the sender harness and measure resistance of the sender across its terminals; compare to manufacturer spec and observe change to gauge/BCM reading when disconnected
- Check continuity from sender ground pin to chassis battery negative; measure voltage drop while operating harness to detect poor ground
- Perform wiggle test of wiring while monitoring live data to catch intermittent opens/shorts
- If wiring and connector are good, bench-test or replace the fuel level sender or pump module assembly as required
- If sender and wiring test good, inspect/diagnose the receiving module (BCM/instrument cluster) per manufacturer procedures; check for blown fuses or failed modules
- Clear the code, test drive or cycle ignition, and verify the code does not return and that fuel level readings are correct
Likely causes
- Disconnected or corroded connector at the fuel pump/fuel tank module
- Broken signal wire insulated conductor contacting B+ or a fused feed
- Failed fuel level sender (open/short internally)
- Failed ground at tank or instrument panel
Fault status
Status
Fuel Level Sensor A Circuit High — sender signal voltage higher than expected (open/short to battery voltage or failed sender/wiring).
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P0463
HUMMER
P — Powertrain
Fuel Level Sensor Circuit High Voltage
AI status
Completed
Completed
100%
Causes
- Open or damaged wiring in the fuel level sensor circuit
- Short to battery voltage (B+) on the sender signal wire
- Corroded, loose or damaged connector at the fuel tank/module
- Failed fuel level sender or float assembly (often part of the pump module)
- Poor or missing ground for the sender or instrument cluster
- Faulty gauge cluster, body control module (BCM) or fuel level input circuit
Symptoms
- Malfunction Indicator Lamp (MIL/CHECK ENGINE) may be illuminated
- Fuel gauge stuck at or near full, or reads higher than actual level
- Inaccurate or erratic fuel gauge readings
- Possible stored history codes for fuel level circuit faults
- Vehicle drivability not commonly affected (usually gauge/telemetry only)
What to check
- Read and record freeze frame and live data for fuel level/fuel level voltage with key ON engine OFF
- Verify actual fuel tank level visually or with known quantity and compare to gauge/live data
- Inspect harness and connector at fuel pump/fuel tank module for corrosion, bent pins, water intrusion, or damage
- Backprobe the sender signal, reference and ground pins at the tank with key ON to measure voltage and continuity
- Wiggle harness and connectors while observing live data to find intermittent faults
- Check for aftermarket alarms, stereos, remote start or repairs that may have disturbed wiring
Signal parameters
- Signal type: typically an analog voltage or variable resistance to ground (varies by vehicle)
- Typical voltage range (key ON, engine OFF): approximately 0.2–4.8 V for most 0–5V systems (manufacturer dependent)
- High-voltage fault threshold: often ≈4.9–5.5 V or ‘open/over-range’ indication — consult vehicle data
- Typical resistance range (float dependent): can vary widely (approx. 10–250 Ω across travel on some units); consult service spec for exact values
- Expected connector pins: reference voltage (if used), sender signal, sender ground — verify pinout before testing
Diagnostic algorithm
- Confirm the code and note freeze-frame/live data values for fuel level and sender voltage
- Verify actual fuel level (visual or known fill) to validate gauge behavior
- Inspect the fuel pump/fuel tank module connector visually; disconnect and check pins for corrosion, bent or pushed-back terminals
- With key ON (engine OFF) backprobe the sender signal pin and measure voltage; note value and whether it corresponds to actual fuel level
- Check for a short to battery voltage on the signal wire: measure voltage between signal wire and chassis ground with harness connected and disconnected
- Disconnect the sender harness and measure resistance of the sender across its terminals; compare to manufacturer spec and observe change to gauge/BCM reading when disconnected
- Check continuity from sender ground pin to chassis battery negative; measure voltage drop while operating harness to detect poor ground
- Perform wiggle test of wiring while monitoring live data to catch intermittent opens/shorts
- If wiring and connector are good, bench-test or replace the fuel level sender or pump module assembly as required
- If sender and wiring test good, inspect/diagnose the receiving module (BCM/instrument cluster) per manufacturer procedures; check for blown fuses or failed modules
- Clear the code, test drive or cycle ignition, and verify the code does not return and that fuel level readings are correct
Likely causes
- Disconnected or corroded connector at the fuel pump/fuel tank module
- Broken signal wire insulated conductor contacting B+ or a fused feed
- Failed fuel level sender (open/short internally)
- Failed ground at tank or instrument panel
Fault status
Status
Fuel Level Sensor A Circuit High — sender signal voltage higher than expected (open/short to battery voltage or failed sender/wiring).
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Repair manuals
Manual library for HUMMER
138
Browse 138 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
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Code
P0463
LAND ROVER
P — Powertrain
High input from the level sensor fuel
AI status
Completed
Completed
100%
Causes
- Open or damaged wiring in the fuel level sensor circuit
- Short to battery voltage (B+) on the sender signal wire
- Corroded, loose or damaged connector at the fuel tank/module
- Failed fuel level sender or float assembly (often part of the pump module)
- Poor or missing ground for the sender or instrument cluster
- Faulty gauge cluster, body control module (BCM) or fuel level input circuit
Symptoms
- Malfunction Indicator Lamp (MIL/CHECK ENGINE) may be illuminated
- Fuel gauge stuck at or near full, or reads higher than actual level
- Inaccurate or erratic fuel gauge readings
- Possible stored history codes for fuel level circuit faults
- Vehicle drivability not commonly affected (usually gauge/telemetry only)
What to check
- Read and record freeze frame and live data for fuel level/fuel level voltage with key ON engine OFF
- Verify actual fuel tank level visually or with known quantity and compare to gauge/live data
- Inspect harness and connector at fuel pump/fuel tank module for corrosion, bent pins, water intrusion, or damage
- Backprobe the sender signal, reference and ground pins at the tank with key ON to measure voltage and continuity
- Wiggle harness and connectors while observing live data to find intermittent faults
- Check for aftermarket alarms, stereos, remote start or repairs that may have disturbed wiring
Signal parameters
- Signal type: typically an analog voltage or variable resistance to ground (varies by vehicle)
- Typical voltage range (key ON, engine OFF): approximately 0.2–4.8 V for most 0–5V systems (manufacturer dependent)
- High-voltage fault threshold: often ≈4.9–5.5 V or ‘open/over-range’ indication — consult vehicle data
- Typical resistance range (float dependent): can vary widely (approx. 10–250 Ω across travel on some units); consult service spec for exact values
- Expected connector pins: reference voltage (if used), sender signal, sender ground — verify pinout before testing
Diagnostic algorithm
- Confirm the code and note freeze-frame/live data values for fuel level and sender voltage
- Verify actual fuel level (visual or known fill) to validate gauge behavior
- Inspect the fuel pump/fuel tank module connector visually; disconnect and check pins for corrosion, bent or pushed-back terminals
- With key ON (engine OFF) backprobe the sender signal pin and measure voltage; note value and whether it corresponds to actual fuel level
- Check for a short to battery voltage on the signal wire: measure voltage between signal wire and chassis ground with harness connected and disconnected
- Disconnect the sender harness and measure resistance of the sender across its terminals; compare to manufacturer spec and observe change to gauge/BCM reading when disconnected
- Check continuity from sender ground pin to chassis battery negative; measure voltage drop while operating harness to detect poor ground
- Perform wiggle test of wiring while monitoring live data to catch intermittent opens/shorts
- If wiring and connector are good, bench-test or replace the fuel level sender or pump module assembly as required
- If sender and wiring test good, inspect/diagnose the receiving module (BCM/instrument cluster) per manufacturer procedures; check for blown fuses or failed modules
- Clear the code, test drive or cycle ignition, and verify the code does not return and that fuel level readings are correct
Likely causes
- Disconnected or corroded connector at the fuel pump/fuel tank module
- Broken signal wire insulated conductor contacting B+ or a fused feed
- Failed fuel level sender (open/short internally)
- Failed ground at tank or instrument panel
Fault status
Status
Fuel Level Sensor A Circuit High — sender signal voltage higher than expected (open/short to battery voltage or failed sender/wiring).
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Repair manuals
Manual library for LAND ROVER
320
Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
LAND ROVER
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LAND ROVER: 2022
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Defender
- 90
- 90
- 90 S
- 90 S
- 90 V8
- 90 V8
- 90 V8 Carpathian Edition
- 90 V8 Carpathian Edition
- 90 X
- 90 X
- 90 X-Dynamic HSE
- 90 X-Dynamic HSE
- 90 X-Dynamic S
- 90 X-Dynamic S
- 90 X-Dynamic SE
- 90 X-Dynamic SE
- 110
- 110
- 110 S
- 110 S
- 110 SE
- 110 SE
- 110 V8
- 110 V8
- 110 V8 Carpathian Edition
- 110 V8 Carpathian Edition
- 110 X
- 110 X
- 110 X-Dynamic SE
- 110 X-Dynamic SE
- 110 XS Edition
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Discovery
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Discovery R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Discovery R-Dynamic S
- S
- S
-
Discovery Sport
-
Range Rover
- Autobiography, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover Autobiography
- Autobiography, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover Autobiography
- 2022 Range Rover Base
- 2022 Range Rover Base
- First Edition
- First Edition
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover HSE Westminster
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2022: Range Rover HSE Westminster
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover SE
- SE, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover SE
- SE, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover SE
- SE, 4.4L Eng VIN 7 · 4.4L Eng VIN 72022: Range Rover SE
- SV
- SV
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
- SVAutobiography Dynamic Blk.
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Range Rover Evoque
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Range Rover Velar
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2022: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2022: Range Rover Velar S
-
-
LAND ROVER: 2021
-
Discovery
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Discovery R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Discovery R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Discovery R-Dynamic S
- S
- S
-
Discovery Sport
-
Range Rover
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Autobiography
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Autobiography
- Autobiography Fifty Edition
- Autobiography Fifty Edition
- 2021 Range Rover Base
- 2021 Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover HSE
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover HSE
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover HSE Westminster
- HSE Westminster, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover HSE Westminster
- HSE Westminster, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover HSE Westminster
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
- SVAutobiography Dynamic Blk.
- SVAutobiography Dynamic Blk.
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Range Rover Evoque
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Range Rover Sport
- Autobiography, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography
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- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography
- Autobiography, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2021: Range Rover Sport Autobiography Dynamic
- HSE Dynamic
- HSE Dynamic
- HSE Silver Edition, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 2.0L Eng VIN Y · 2.0L Eng VIN Y2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN K · 3.0L Eng VIN K2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Sport HSE Silver Edition
- HSE Silver Edition, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Sport HSE Silver Edition
- HST
- HST
- SE
- SE
- SVR
- SVR
- SVR Carbon Edition
- SVR Carbon Edition
-
Range Rover Velar
- R-Dynamic HSE
- R-Dynamic HSE
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar R-Dynamic S
- R-Dynamic S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar R-Dynamic S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar S
- S, 2.0L Eng VIN X · 2.0L Eng VIN X2021: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar S
- S, 3.0L Eng VIN U · 3.0L Eng VIN U2021: Range Rover Velar S
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LAND ROVER: 2020
-
Defender
- 90 First Edition
- 90 First Edition
- 110 First Edition
- 110 First Edition
- 110 HSE
- 110 HSE
- 110 S
- 110 S
- 110 SE
- 110 SE
- 110 X
- 110 X
- 110, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Defender 110
- 110, 2.0L Eng VIN X · 2.0L Eng VIN X2020: Defender 110
- 110, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Defender 110
- 110, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Defender 110
-
Discovery
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE
- HSE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE
- HSE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE
- HSE Luxury, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE Luxury
- HSE Luxury, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery HSE Luxury
- Landmark
- Landmark
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery SE
- SE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Discovery SE
- SE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery SE
- SE, 3.0L Eng VIN V · 3.0L Eng VIN V2020: Discovery SE
-
Range Rover
- Autobiography
- Autobiography
- Base, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Base
- Base, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Base
- Base, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Base
- Base, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Base
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover HSE
- HSE, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover HSE
- SVAutobiography
- SVAutobiography
- SVAutobiography Dynamic
- SVAutobiography Dynamic
-
Range Rover Evoque
-
Range Rover Sport
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 2.0L Eng VIN Y · 2.0L Eng VIN Y2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport Autobiography Dynamic
- Autobiography Dynamic, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport Autobiography Dynamic
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN K · 3.0L Eng VIN K2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport HSE
- HSE, 3.0L Eng VIN U · 3.0L Eng VIN U2020: Range Rover Sport HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport HSE
- HSE, 5.0L Eng VIN E · 5.0L Eng VIN E2020: Range Rover Sport HSE
- HSE Dynamic
- HSE Dynamic
- HSE PHEV
- HSE PHEV
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Code
P0463
MITSUBISHI
P — Powertrain
Fuel level sensor high
AI status
Completed
Completed
100%
Causes
- Open or damaged wiring in the fuel level sensor circuit
- Short to battery voltage (B+) on the sender signal wire
- Corroded, loose or damaged connector at the fuel tank/module
- Failed fuel level sender or float assembly (often part of the pump module)
- Poor or missing ground for the sender or instrument cluster
- Faulty gauge cluster, body control module (BCM) or fuel level input circuit
Symptoms
- Malfunction Indicator Lamp (MIL/CHECK ENGINE) may be illuminated
- Fuel gauge stuck at or near full, or reads higher than actual level
- Inaccurate or erratic fuel gauge readings
- Possible stored history codes for fuel level circuit faults
- Vehicle drivability not commonly affected (usually gauge/telemetry only)
What to check
- Read and record freeze frame and live data for fuel level/fuel level voltage with key ON engine OFF
- Verify actual fuel tank level visually or with known quantity and compare to gauge/live data
- Inspect harness and connector at fuel pump/fuel tank module for corrosion, bent pins, water intrusion, or damage
- Backprobe the sender signal, reference and ground pins at the tank with key ON to measure voltage and continuity
- Wiggle harness and connectors while observing live data to find intermittent faults
- Check for aftermarket alarms, stereos, remote start or repairs that may have disturbed wiring
Signal parameters
- Signal type: typically an analog voltage or variable resistance to ground (varies by vehicle)
- Typical voltage range (key ON, engine OFF): approximately 0.2–4.8 V for most 0–5V systems (manufacturer dependent)
- High-voltage fault threshold: often ≈4.9–5.5 V or ‘open/over-range’ indication — consult vehicle data
- Typical resistance range (float dependent): can vary widely (approx. 10–250 Ω across travel on some units); consult service spec for exact values
- Expected connector pins: reference voltage (if used), sender signal, sender ground — verify pinout before testing
Diagnostic algorithm
- Confirm the code and note freeze-frame/live data values for fuel level and sender voltage
- Verify actual fuel level (visual or known fill) to validate gauge behavior
- Inspect the fuel pump/fuel tank module connector visually; disconnect and check pins for corrosion, bent or pushed-back terminals
- With key ON (engine OFF) backprobe the sender signal pin and measure voltage; note value and whether it corresponds to actual fuel level
- Check for a short to battery voltage on the signal wire: measure voltage between signal wire and chassis ground with harness connected and disconnected
- Disconnect the sender harness and measure resistance of the sender across its terminals; compare to manufacturer spec and observe change to gauge/BCM reading when disconnected
- Check continuity from sender ground pin to chassis battery negative; measure voltage drop while operating harness to detect poor ground
- Perform wiggle test of wiring while monitoring live data to catch intermittent opens/shorts
- If wiring and connector are good, bench-test or replace the fuel level sender or pump module assembly as required
- If sender and wiring test good, inspect/diagnose the receiving module (BCM/instrument cluster) per manufacturer procedures; check for blown fuses or failed modules
- Clear the code, test drive or cycle ignition, and verify the code does not return and that fuel level readings are correct
Likely causes
- Disconnected or corroded connector at the fuel pump/fuel tank module
- Broken signal wire insulated conductor contacting B+ or a fused feed
- Failed fuel level sender (open/short internally)
- Failed ground at tank or instrument panel
Fault status
Status
Fuel Level Sensor A Circuit High — sender signal voltage higher than expected (open/short to battery voltage or failed sender/wiring).
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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406
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