P2411 Fuel Cap Sensor/Switch Circuit High

P2411 is stored when the fuel cap sensor or switch circuit reads above its normal window. With a pulled-up signal line this is what an open circuit, an unplugged connector or a short to the battery feed looks like, so it is often the code that follows a bodywork job or a filler-neck replacement. No manufacturer publicly documents P2411 or a threshold for it. The function is known from pressure-based cap monitoring: Ford's OBD summary sets P0457 after refuelling if tank vacuum stays above -8 inH2O for 30 s and uses a dedicated Check Fuel Cap lamp. CARB allows a separate indicator instead of the MIL for a detected cap leak, but circuit faults of the sensor remain normal input-component faults. P2410 is the low counterpart, P2412 the intermittent case.

Likely causes

Symptoms

• Check engine light
• Cap warning behaves as if the cap were permanently open

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.