P203E
Reductant Level Sensor A Circuit Intermittent/Erratic
P203E is an OBD-II diagnostic trouble code meaning: Reductant Level Sensor A Circuit Intermittent/Erratic. Common causes: poor contact in the sensor connector, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased consumption of AdBlue reagent
- Unstable reagent level readings
- SCR system error message on instrument panel
Causes
- Poor contact in the sensor connector
- Open or short circuit in the sensor circuit
- Reagent level sensor malfunction
- Problems with the SCR control unit
- Corroded contacts or damaged wiring harness
How to Fix
- Check connections and sensor connector for corrosion or damage.
- Check the continuity of the sensor circuit (resistance, short circuit)
- Check the functionality of the reagent level sensor
- If necessary, replace the reagent level sensor
- Reset the error code and check the system after repair
Related codes
Error P203E by Vehicle Brand
FAQ
What does the P203E code mean?
P203E is an OBD-II diagnostic trouble code that indicates: Reductant Level Sensor A Circuit Intermittent/Erratic
What causes a P203E error code?
The most common causes of P203E include: Poor contact in the sensor connector; Open or short circuit in the sensor circuit; Reagent level sensor malfunction; Problems with the SCR control unit.
How do I fix a P203E diagnostic trouble code?
To fix P203E: Check connections and sensor connector for corrosion or damage.. Check the continuity of the sensor circuit (resistance, short circuit). Check the functionality of the reagent level sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P203E?
Yes, but get it checked soon
How much does it cost to fix P203E?
The estimated repair cost for P203E is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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