P0462: Fuel Level Sensor Circuit Low Input
Can you still drive? Yes, but your fuel gauge is unreliable. Track your fuel consumption by mileage to avoid running out of gas unexpectedly.
What Does P0462 Mean?
Code P0462 indicates that the fuel level sensor signal is reading below the minimum expected voltage or resistance. This typically means the sensor circuit has a short to ground, the sending unit resistance is too low, or the wiring is damaged. The fuel gauge may be stuck on empty regardless of the actual fuel level.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Short to ground in fuel level sensor wiring
- Failed fuel level sending unit with low resistance
- Corroded connector at the fuel tank
- Damaged wiring harness near the fuel tank
- Fuel-saturated float causing sensor to read full down position
Symptoms
- Fuel gauge stuck on empty
- Check engine light on
- Low fuel warning light constantly on
- Inaccurate range estimation
Diagnostic Steps
- 1Read fuel level sensor voltage or resistance with a scan tool
- 2Disconnect the fuel level sensor and check if the signal changes
- 3Measure the sending unit resistance at the tank connector
- 4Inspect wiring from the ECM to the fuel tank connector for shorts to ground
- 5Check connector pins for corrosion or bent contacts
- 6Replace the fuel level sending unit if resistance is out of range
Recommended Parts & Tools
fuel level sensor
fuel pump assembly
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $100 - $450 |
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Chat with AI About P0462Commonly Affected Vehicles
Related Recalls
1 Active Recall — 2026 Chevrolet Tahoe
The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tahoe, Traverse, GMC Acadia, Hummer EV Pickup, Hummer EV SUV, Sierra 1500, 2500, 3500, Sierra EV, Terrain, Yukon, and Yukon XL vehicles. The radio may not have been set to the correct status to download the electronic owner's manual during production. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, “Occupant Protection.”
Remedy: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters are expected to be mailed April 13, 2026. Owners may contact GM customer service at 1-866-467-9700, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-333-4223. The manufacturer's number for this recall is N252540430. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 26, 2026.
Data provided by the National Highway Traffic Safety Administration (NHTSA).
Frequently Asked Questions
My fuel gauge always shows empty. Is this P0462?
A stuck-on-empty gauge is a classic symptom of P0462. The low signal input causes the gauge to display empty regardless of how much fuel is actually in the tank.
Is it dangerous to drive without a working fuel gauge?
It is not immediately dangerous, but running out of fuel can leave you stranded and, on some vehicles, can damage the fuel pump by running it dry. Track your mileage between fill-ups to estimate your fuel level.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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