Fault Code P2066
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2066
Reductant Tank Level Sensor Circuit Range/Performance
This code indicates an abnormal range/performance detected in the reductant (AdBlue/DEF) tank level sensor circuit.
Part Details
Part Name
Reductant Tank Level Sensor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪500 - ₪1200
Engine Location
DEF tank
Symptoms
- Check Engine Light on
- Incorrect DEF level reading
- SCR system warning messages
- Vehicle speed limitation (in severe cases)
Possible Causes
- 1Faulty DEF level sensor
- 2Damaged or shorted wiring in the sensor circuit
- 3Loose connectors or corrosion
- 4Defective Engine Control Module (ECM)
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