P204B
Reductant Pressure Sensor Circuit Range/Performance
P204B is an OBD-II diagnostic trouble code meaning: Reductant Pressure Sensor Circuit Range/Performance. Common causes: reagent pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unpleasant exhaust smell
- Possible transition to emergency mode
Causes
- Reagent pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Problems with the SCR control unit
- Sensor is dirty or damaged
How to Fix
- Check the continuity of the reagent pressure sensor circuit
- Inspect connectors and contacts for corrosion or damage
- Check the functionality of the pressure sensor
- If necessary, replace the reagent pressure sensor
- Test the system after repair
Related codes
Error P204B by Vehicle Brand
FAQ
What does the P204B code mean?
P204B is an OBD-II diagnostic trouble code that indicates: Reductant Pressure Sensor Circuit Range/Performance
What causes a P204B error code?
The most common causes of P204B include: Reagent pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the SCR control unit.
How do I fix a P204B diagnostic trouble code?
To fix P204B: Check the continuity of the reagent pressure sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the functionality of the pressure sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P204B?
Yes, but get it checked soon
How much does it cost to fix P204B?
The estimated repair cost for P204B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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