P24CB

Reductant Tank Cap Switch Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Detected by the diagnostic system
possible engine power restrictions
error message on the dashboard
Possible problems with the SCR system

Causes

Tank cap sensor malfunction
Open or short circuit in wiring
Poor contact in the sensor connector
Loose or damaged tank cap
Problems with the SCR control module

How to Fix

Check that the tank lid is closed correctly
Inspect the sensor wiring and connectors
Check sensor resistance
Scan the system for other errors
If necessary, replace the sensor or wiring

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