P224A
NOx Sensor Heater Resistance Bank 1 Sensor 1
P224A is an OBD-II diagnostic trouble code meaning: NOx Sensor Heater Resistance Bank 1 Sensor 1. Common causes: open or short circuit in the nox sensor heater circuit, faulty nox sensor. Estimated repair cost: $89–278.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Rough engine idling
- Dips during acceleration
Causes
- Open or short circuit in the NOx sensor heater circuit
- Faulty NOx sensor
- Damage to the wiring harness to the sensor
- Problems with the engine control unit
- Corrosion of contacts or connectors
How to Fix
- Check the continuity of the NOx sensor heater circuit
- Measure the resistance of the sensor heater
- Inspect connectors and wiring harness for damage
- If necessary, replace the NOx sensor
- Reset the error code and check the system operation
Related codes
Error P224A by Vehicle Brand
FAQ
What does the P224A code mean?
P224A is an OBD-II diagnostic trouble code that indicates: NOx Sensor Heater Resistance Bank 1 Sensor 1
What causes a P224A error code?
The most common causes of P224A include: Open or short circuit in the NOx sensor heater circuit; Faulty NOx sensor; Damage to the wiring harness to the sensor; Problems with the engine control unit.
How do I fix a P224A diagnostic trouble code?
To fix P224A: Check the continuity of the NOx sensor heater circuit. Measure the resistance of the sensor heater. Inspect connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P224A?
Yes, but get it checked soon
How much does it cost to fix P224A?
The estimated repair cost for P224A is $89–278. Actual cost depends on your vehicle, location, and labor rates.
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