P0123 2002 Nissan Altima Sedan Code - Throttle Position Sensor Circuit High Voltage
Quick Answer
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection. 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
- P0123 2002 Nissan Altima Sedan indicates Throttle Position Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection.
- 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.
Code P0123 2002 Nissan Altima Sedan Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0123 2002 Nissan Altima Sedan?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
How to Fix the DTC P0123 2002 Nissan Altima Sedan?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0123 2002 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0123 2002 Nissan Altima Sedan code?
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Frequently Asked Questions about P0123 2002 Nissan Altima Sedan Code
1. What are the common symptoms of OBDII code P0123 in a 2002 Nissan Altima Sedan?
The common symptoms of code P0123 in a 2002 Nissan Altima Sedan include issues with acceleration, rough idling, and potential stalling of the vehicle.
2. What causes the Throttle Position Sensor Circuit High Voltage code in a 2002 Nissan Altima Sedan?
The P0123 code in a 2002 Nissan Altima Sedan is often triggered by a faulty throttle position sensor, wiring issues, or a problem with the engine control module.
3. How can I diagnose the Throttle Position Sensor Circuit High Voltage issue in my 2002 Nissan Altima Sedan?
To diagnose the P0123 code, you can use an OBDII scanner to read the code, visually inspect the throttle position sensor and its wiring, and perform voltage tests on the sensor.
4. Can a dirty throttle body cause the P0123 code in a 2002 Nissan Altima Sedan?
Yes, a dirty throttle body can sometimes cause incorrect readings by the throttle position sensor, leading to the P0123 code being triggered.
5. How do I repair the Throttle Position Sensor Circuit High Voltage issue in my 2002 Nissan Altima Sedan?
Repairing the P0123 code may involve replacing the throttle position sensor, repairing any damaged wiring, cleaning the throttle body, or resetting the engine control module.
6. Is it safe to continue driving my 2002 Nissan Altima Sedan with the P0123 code present?
It is not recommended to continue driving your vehicle with the P0123 code as it can lead to poor engine performance and potential safety hazards.
7. Can I reset the P0123 code in my 2002 Nissan Altima Sedan by disconnecting the battery?
Disconnecting the battery may temporarily clear the code, but it is important to address the underlying issue causing the P0123 code to prevent it from recurring.
8. How much does it typically cost to repair the Throttle Position Sensor Circuit High Voltage issue in a 2002 Nissan Altima Sedan?
The cost of repairing the P0123 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
9. Will the P0123 code in my 2002 Nissan Altima Sedan cause the check engine light to illuminate?
Yes, the P0123 code will trigger the check engine light to illuminate in your 2002 Nissan Altima Sedan to alert you to a potential issue with the throttle position sensor circuit.
10. Can a DIY enthusiast fix the P0123 code in a 2002 Nissan Altima Sedan, or is it best left to a professional mechanic?
While some DIY enthusiasts may be able to address the P0123 code by replacing the throttle position sensor or cleaning the throttle body, it is recommended to consult a professional mechanic for accurate diagnosis and repair.
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