P2410 Fuel Cap Sensor/Switch Circuit Low

P2410 reports that the fuel cap sensor or switch circuit is held below its expected voltage window. Depending on how the switch is wired, this can mean a signal wire shorted to ground, a switch that is permanently closed to ground, or a sensor with a failed supply. No manufacturer publicly documents this code or its threshold; the evidence for the function itself comes from pressure-based cap checks such as Ford's P0457 logic, which watches tank vacuum after refuelling and triggers a separate Check Fuel Cap lamp. CARB requires electrical input circuits of emission-related components to be monitored for readings outside their range. P2411 is the high-voltage counterpart, P2408 the unspecified circuit fault. Expect a warning lamp and possibly an EVAP test that does not run; driving is unaffected.

Likely causes

Symptoms

• Check engine light
• Fuel cap warning stays on or never appears

Repair estimate

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

Related codes

References: law.cornell.edu, newtonnet.co.uk.