P0462 on Jeep
Fuel Level Sensor 'A' Circuit Low Input
P0462 on Jeep vehicles indicates fuel level sensor 'a' circuit low input. Au7o has documented this code across 3 Jeep models — most commonly on Grand Cherokee, Renegade, Wrangler. 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 Jeep range from $120 to $800, 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 Jeep by Model
Jeep Grand Cherokee(1 issue)
- In-Tank Fuel Pump Module Failure and Fuel-Level Sending Unit Fault (No-Start / Erratic Gauge)1999-2004
The combined in-tank fuel pump / level-sender module on the WJ Grand Cherokee wears out with age: the pump loses pressure (needs ~49-58 psi) causing crank-no-start or hot stalling, while the integrated sending-unit float/resistor card fails causing erratic or stuck fuel-gauge readings. Both a no-start and a jumpy fuel gauge are heavily searched WJ complaints and often the same module.
Jeep Renegade(1 issue)
- Fuel Level Sending Unit Failure / Inaccurate or Frozen Fuel Gauge2015-2019
Renegade owners commonly report the fuel gauge reading inaccurately, sticking, or freezing in place, often once the tank drops toward the lower quarter (owners note it can freeze around the 2-gallon point). The resistive fuel-level sending unit inside the tank module develops a bad spot on the float element, so the gauge stops tracking level correctly and drivers can unexpectedly run out of fuel while the gauge still shows fuel remaining.
Jeep Wrangler(1 issue)
- Fuel Level Sender Failure — Inaccurate/Stuck Fuel Gauge (P0463)2007-2022
The fuel-level sending unit, integrated with the in-tank fuel pump module, develops a worn resistance card or a bent/sticking float arm with age. This causes the fuel gauge to read inaccurately, stick (often above or below a certain level), drop suddenly, or trigger a false low-fuel light. On JL models it can also set P0463 (fuel-level sensor circuit high) and on inclines the gauge may briefly read empty until the vehicle is back on level ground. A persistent fault sometimes traces to chassis-harness wiring rather than the sender itself.
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View P0462 across all makes →Frequently Asked Questions
What does P0462 mean on Jeep?▼
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 Jeep specifically, this code is documented across 3 models.
What causes P0462 on Jeep vehicles?▼
Common causes on Jeep: 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 Jeep?▼
Repair costs on Jeep range from $120 to $800, depending on the specific model and root cause.
Which Jeep models have P0462 documented?▼
Au7o has documented P0462 on 3 Jeep models: Grand Cherokee, Renegade, Wrangler.