P1223 Nissan Code - Throttle Position Sensor 2 Circuit Low Input
Quick Answer
The P1223 diagnostic trouble code for Nissan vehicles indicates a problem with the Throttle Position Sensor (TPS) 2 Circuit, specifically a low input signal being detected. Common causes include Faulty Throttle Position Sensor, Wiring issues or poor connections in the TPS circuit, Corrosion or contamination in the TPS connector. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1223 Nissan indicates Throttle Position Sensor 2 Circuit Low Input.
- Common causes
- Common causes include Faulty Throttle Position Sensor, Wiring issues or poor connections in the TPS circuit, Corrosion or contamination in the TPS connector.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1223 Nissan Description
The P1223 diagnostic trouble code for Nissan vehicles indicates a problem with the Throttle Position Sensor (TPS) 2 Circuit, specifically a low input signal being detected. The TPS is a crucial component of the electronic throttle control system that helps regulate the amount of air entering the engine. The TPS monitors the position of the throttle valve and sends voltage signals to the engine control module (ECM) to adjust fuel injection and ignition timing accordingly.
Common Causes of P1223 Nissan
- Faulty Throttle Position Sensor
- Wiring issues or poor connections in the TPS circuit
- Corrosion or contamination in the TPS connector
- ECM software or hardware issues
- Environmental factors such as extreme temperatures affecting sensor performance
Symptoms of P1223 Nissan
- Rough idling or stalling
- Lack of power or hesitation during acceleration
- Engine misfires
- Poor fuel efficiency
- Illumination of the Check Engine Light
How to Fix P1223 Nissan
- Begin by conducting a visual inspection of the TPS and its wiring harness for any visible damage or corrosion.
- Use a multimeter to test the TPS for proper voltage output at various throttle positions.
- If the TPS is found to be faulty, replace it with a new sensor following manufacturer guidelines.
- Check and repair any damaged wiring or connectors in the TPS circuit.
- Clear the diagnostic trouble codes using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1223 Nissan
The cost of repairing a Throttle Position Sensor 2 Circuit Low Input issue can vary depending on the specific vehicle make and model, as well as the labor rates in your area. On average, replacing a faulty TPS sensor can range from $100 to $300, including parts and labor. Additional costs may apply if wiring repairs or ECM diagnostics are needed. It is recommended to consult with a certified mechanic or dealership for a more accurate cost estimate based on your vehicle's requirements.
When is the Code Detected?
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Information for Specific Nissan Models
- P1223 2002 Nissan Altima Sedan — Throttle Position Sensor 2 Circuit Low Input
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