P24CC

Reductant Tank Cap Switch Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
AdBlue error message on the dashboard
Reducing engine power (limp mode)
Problems starting the SCR system
Malfunction in the tank lid control system

Causes

Faulty AdBlue tank cap sensor
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Contact corrosion
Problems with the engine control unit

How to Fix

Check the condition of the AdBlue tank cap
Check the continuity of the cover sensor circuit
Inspect connectors and contacts for corrosion
Replace the lid sensor if necessary
Check the operation of the SCR system after repair

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