P0464 Fuel Level Sensor "A" Circuit Intermittent
P0464 is a generic OBD2 powertrain code. It means “Fuel Level Sensor "A" Circuit Intermittent” — the same on every make and model, because the definition comes from the SAE J2012 standard rather than from the carmaker.
Ask the AI about P0464 on your car- System
- Powertrain (P)
- Code type
- Generic (SAE)
- Range
- P04xx
What the wording tells you
“Intermittent” or “erratic” means the signal dropped out or jumped for brief moments. Look for a loose pin, a chafed wire that shorts over bumps, or corrosion — and expect the fault to hide at the workshop; wiggling the harness with the engine running often brings it out.
“A”: where a car has several identical components, SAE tells them apart with letters. Which physical part is “A” is defined by the manufacturer — check the service information for your car before replacing it.
Can I keep driving with P0464?
The rule of thumb for this area (auxiliary emission controls): Most codes here don’t change how the car drives — you can keep going and fix it before the next emissions test. The exceptions are the cooling-fan codes (watch the temperature gauge), particulate-filter codes on diesels, and anything that comes with a flashing lamp or a rotten-egg smell.
How P0464 breaks down
Powertrain. Engine, transmission, fuel and emissions — the codes behind the check engine lamp.
Generic code: defined by SAE, the same on every make.
Auxiliary emission controls.
The specific fault within this range.
Where to look: Auxiliary emission controls
The systems that clean up exhaust and fuel vapor: exhaust gas recirculation (EGR), secondary air injection, catalytic converter monitoring, the evaporative emissions (EVAP) system with its purge and vent valves — plus exhaust temperature sensors, the particulate filter and some cooling-fan circuits.
Typical causes in this area
- A loose or faulty gas cap and other EVAP leaks
- Carbon-clogged EGR valves and passages
- Worn catalytic converters or lazy oxygen sensors
- Stuck purge and vent valves
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Read and clear P0464 on your iPhone
Brimly reads stored, pending and permanent codes through a Bluetooth LE or Wi-Fi OBD2 adapter, explains each one offline from the same 2,693-code dictionary as this page, and clears them once the fault is fixed — each clear goes into the car’s service history with the codes it removed. OBD diagnostics are part of Brimly Forever, a one-time purchase; the PRO assistant explains a code for your exact car.
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Frequently asked
What does P0464 mean?
P0464 is a generic OBD2 powertrain code. It means “Fuel Level Sensor "A" Circuit Intermittent” — the same on every make and model, because the definition comes from the SAE J2012 standard rather than from the carmaker.
Can I drive with P0464?
The rule of thumb for this area (auxiliary emission controls): Most codes here don’t change how the car drives — you can keep going and fix it before the next emissions test. The exceptions are the cooling-fan codes (watch the temperature gauge), particulate-filter codes on diesels, and anything that comes with a flashing lamp or a rotten-egg smell.
What causes P0464?
“Intermittent” or “erratic” means the signal dropped out or jumped for brief moments. Look for a loose pin, a chafed wire that shorts over bumps, or corrosion — and expect the fault to hide at the workshop; wiggling the harness with the engine running often brings it out. Typical causes in this area: A loose or faulty gas cap and other EVAP leaks; Carbon-clogged EGR valves and passages; Worn catalytic converters or lazy oxygen sensors; Stuck purge and vent valves.
How do I clear P0464?
Fix the cause first, then clear it with any OBD2 scanner or app. Once the fault is gone the car also clears it on its own: the check engine lamp goes off after the self-test passes on three drive cycles in a row, and the stored code ages out after about 40 warm-ups. Clearing without a repair only hides it for a while — and resets the readiness monitors an emissions inspection looks at.
Is P0464 the same on every car?
Yes. P0464 is a generic SAE J2012 code, so its definition is identical on every make and model. What differs is the cause behind it and the repair procedure, which depend on the engine — that’s why the assistant on this page asks for your car.
Guides
Definitions: the generic SAE J2012 codes from Brimly’s offline dictionary (data version 2026.09). Causes and advice are general guidance for all makes — the service information for your car has the last word.