P1C56
NOX Sensor Intermittent Bank 1 Sensor 2
P1C56 is an OBD-II diagnostic trouble code meaning: NOX Sensor Intermittent Bank 1 Sensor 2. Common causes: damage to the wiring to the nox sensor, malfunction of the nox sensor itself. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Increased fuel consumption
- Reduced engine power
- Dips during acceleration
- Unstable idling
Causes
- Damage to the wiring to the NOX sensor
- Malfunction of the NOX sensor itself
- Poor contact in the sensor connector
- Short circuit in the sensor circuit
- Sensor circuit grounding problems
How to Fix
- Check the integrity of the wiring to the NOX sensor
- Inspect the sensor connector for corrosion or damage.
- Check the resistance and voltage at the sensor
- If necessary, replace the NOX sensor
- Reset the error code and check if it returns
Related codes
FAQ
What does the P1C56 code mean?
P1C56 is an OBD-II diagnostic trouble code that indicates: NOX Sensor Intermittent Bank 1 Sensor 2
What causes a P1C56 error code?
The most common causes of P1C56 include: Damage to the wiring to the NOX sensor; Malfunction of the NOX sensor itself; Poor contact in the sensor connector; Short circuit in the sensor circuit.
How do I fix a P1C56 diagnostic trouble code?
To fix P1C56: Check the integrity of the wiring to the NOX sensor. Inspect the sensor connector for corrosion or damage.. Check the resistance and voltage at the sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1C56?
Yes, but get it checked soon
How much does it cost to fix P1C56?
The estimated repair cost for P1C56 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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