P0462 on Chevrolet
Fuel Level Sensor 'A' Circuit Low Input
P0462 on Chevrolet vehicles indicates fuel level sensor 'a' circuit low input. Au7o has documented this code across 4 Chevrolet models — most commonly on Camaro, Colorado, Impala. P0462 indicates the powertrain control module detected a fuel-level sensor signal voltage that is lower than the normal operating range — often interpreted as an empty or near-empty reading that may not reflect the actual fuel amount. The fuel level sender reports tank level via a variable resistance, and an abnormally low signal can stem from a short to ground or a failed sender. This usually shows up as a stuck-low or inaccurate fuel gauge rather than a driving problem. It is low-urgency but should be corrected so the gauge and EVAP monitors work properly. Typical repair costs on Chevrolet range from $150 to $900, depending on the specific model and root cause.
Common Causes of P0462
- •Faulty fuel level sensor / sending unit
- •Short to ground in the signal wire
- •Corroded or damaged connector at the fuel pump module
- •Open or high-resistance ground circuit
- •Worn sender resistor card or float
- •Damaged wiring harness to the tank
- •Instrument cluster or PCM fault (less common)
P0462 on Chevrolet by Model
Chevrolet Camaro(1 issue)
- Inaccurate Fuel Gauge / Fuel-Level Sending Unit Failure2010-2020
Camaro owners report the fuel gauge reading incorrectly, sticking on full or empty, jumping randomly after a fill-up, or a low-fuel light that won't go out. The culprit is usually the in-tank fuel-level sending unit, a float on a variable resistor (0-90 ohm) whose wiper contacts wear and go open/erratic; corroded connectors or a bad sender ground can cause the same symptoms. Beyond annoyance, an unreliable gauge risks running the tank dry and stranding the car (and stressing the fuel pump).
Chevrolet Colorado(1 issue)
- Fuel Level Sensor Failure Causing Inaccurate Gauge and Empty Reading2004-2012
A common first-generation Colorado problem is failure of the fuel level sending unit, causing the gauge to read empty, fluctuate, or become inaccurate even with fuel in the tank. Owners often see the low fuel light come on unexpectedly or the gauge drop after fill-up. GM trucks of this era had widespread sender wear issues, and Colorado complaints and forum reports show the same pattern.
Chevrolet Impala(1 issue)
- Erratic Fuel Gauge from Faulty Fuel Level Sensor / Sending Unit2006-2013
The in-tank fuel level sensor (part of the sending unit on the fuel pump module) is a common failure on the Impala. The sensor's small metal contact 'teeth' wear against the resistor card as the float arm moves, and the arm itself can stick or bind. The result is a gauge that reads inaccurately or swings erratically between full and empty, often unrelated to actual fuel level. This can leave owners stranded by a gauge that shows fuel remaining when the tank is near empty.
Chevrolet Silverado 1500(1 issue)
- Fuel Level Sensor / Sending Unit Failure Causing Erratic or Stuck Fuel Gauge1999-2013
The in-tank fuel level sensor/sending unit fails as its resistor card and electrical contacts corrode (accelerated by sulfur in gasoline). The fuel gauge then jumps around, sticks on empty or full, reads inaccurately, or trips a false low-fuel light. It is one of the longest-running and most-searched Silverado complaints and sets fuel-level circuit DTCs. The sensor is integrated with the fuel pump module, so replacement usually means dropping the tank.
Looking for P0462 on a different make?
View P0462 across all makes →Frequently Asked Questions
What does P0462 mean on Chevrolet?▼
P0462 stands for "Fuel Level Sensor 'A' Circuit Low Input." P0462 indicates the powertrain control module detected a fuel-level sensor signal voltage that is lower than the normal operating range — often interpreted as an empty or near-empty reading that may not reflect the actual fuel amount. The fuel level sender reports tank level via a variable resistance, and an abnormally low signal can stem from a short to ground or a failed sender. This usually shows up as a stuck-low or inaccurate fuel gauge rather than a driving problem. It is low-urgency but should be corrected so the gauge and EVAP monitors work properly. On Chevrolet specifically, this code is documented across 4 models.
What causes P0462 on Chevrolet vehicles?▼
Common causes on Chevrolet: Faulty fuel level sensor / sending unit, Short to ground in the signal wire, Corroded or damaged connector at the fuel pump module, Open or high-resistance ground circuit, Worn sender resistor card or float. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0462 on a Chevrolet?▼
Repair costs on Chevrolet range from $150 to $900, depending on the specific model and root cause.
Which Chevrolet models have P0462 documented?▼
Au7o has documented P0462 on 4 Chevrolet models: Camaro, Colorado, Impala, Silverado 1500.