Code result
P24CB
Reductant Tank Cap Switch Circuit
Moderate severity
What it means
A general circuit fault on the AdBlue tank cap switch - reports whether the cap is properly closed.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open in switch or wiring
highOne of the most commonly reported causes for this code — check this first.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P24CB freeNo credit card required