P224B
NOx Sensor Heater Resistance Bank 1 Sensor 2
P224B is an OBD-II diagnostic trouble code meaning: NOx Sensor Heater Resistance Bank 1 Sensor 2. Common causes: nox sensor malfunction (heater internal damage), open or short circuit in the heater circuit. Estimated repair cost: $133–278.
Symptoms
- Check Engine Light Is On
- Possible loss of engine power
- Increased fuel consumption
- Unstable engine operation at idle
- Reduced efficiency of the exhaust gas cleaning system
Causes
- NOx sensor malfunction (heater internal damage)
- Open or short circuit in the heater circuit
- Poor contact in the sensor connector
- Wiring harness damage
- Malfunction of the engine control unit (rare)
How to Fix
- Check the continuity of the NOx sensor heater circuit
- Inspect connectors and wiring for damage
- Check sensor heater resistance
- Replace NOx sensor if necessary
- Reset the error code and check the system
Related codes
Error P224B by Vehicle Brand
FAQ
What does the P224B code mean?
P224B is an OBD-II diagnostic trouble code that indicates: NOx Sensor Heater Resistance Bank 1 Sensor 2
What causes a P224B error code?
The most common causes of P224B include: NOx sensor malfunction (heater internal damage); Open or short circuit in the heater circuit; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P224B diagnostic trouble code?
To fix P224B: Check the continuity of the NOx sensor heater circuit. Inspect connectors and wiring for damage. Check sensor heater resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P224B?
Yes, but get it checked soon
How much does it cost to fix P224B?
The estimated repair cost for P224B is $133–278. Actual cost depends on your vehicle, location, and labor rates.
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