P0120 Nissan Code - Throttle Position Sensor Signal Range/Performance
Quick Answer
The P0120 diagnostic trouble code (DTC) for Nissan vehicles indicates an issue with the Throttle Position Sensor (TPS) signal range or performance. Common causes include Faulty Throttle Position Sensor, Wiring issues or poor connections in the TPS circuit, Dirty or contaminated TPS. 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
- P0120 Nissan indicates Throttle Position Sensor Signal Range/Performance.
- Common causes
- Common causes include Faulty Throttle Position Sensor, Wiring issues or poor connections in the TPS circuit, Dirty or contaminated TPS.
- 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 P0120 Nissan Description
The P0120 diagnostic trouble code (DTC) for Nissan vehicles indicates an issue with the Throttle Position Sensor (TPS) signal range or performance. The TPS is a crucial component that monitors the throttle position of the vehicle and sends signals to the Engine Control Module (ECM) to adjust the air-fuel mixture and ignition timing. When the ECM detects that the TPS signal is out of the expected range or is not performing as it should, it triggers the P0120 code.
Common Causes of P0120 Nissan
- Faulty Throttle Position Sensor
- Wiring issues or poor connections in the TPS circuit
- Dirty or contaminated TPS
- ECM software or calibration issues
- Throttle body malfunction
Symptoms of P0120 Nissan
- Check Engine Light illuminated on the dashboard
- Poor fuel economy
- Rough idle or erratic engine behavior
- Hesitation or surging during acceleration
- Stalling or difficulty starting the vehicle
How to Fix P0120 Nissan
- Diagnose the issue by using a scan tool to read the trouble codes and perform a thorough inspection of the TPS and related components.
- Test the TPS using a multimeter to check for proper voltage signals.
- Clean or replace the TPS if necessary, ensuring proper installation and calibration.
- Inspect and repair any damaged wiring or connections in the TPS circuit.
- Clear the DTC and perform a road test to ensure the issue has been resolved.
Cost to Fix P0120 Nissan
The cost of repairing a P0120 code on a Nissan vehicle can vary depending on several factors, including the cost of the TPS sensor, labor rates at the repair shop, and any additional parts or services required. In general, replacing a faulty TPS sensor can range from $100 to $300, while labor costs can add another $80 to $150 per hour. Overall, the total repair cost for this issue may fall in the range of $200 to $500. It's recommended to obtain a detailed quote from a reputable auto repair shop to get an accurate estimate for your specific vehicle.
Tech Notes for P0120 Nissan
1995-1996 Nissan Maxima
1995-1997 Nissan Sentra/200SX
1996-1997 Nissan Truck
1995-1997 Nissan Altima
1996-1997 Nissan Pathfinder
1995-1996 Nissan 240SX
1996-1997 Nissan Quest
Nissan Factory Service Bulletin OBDII Code P0120
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Frequently Asked Questions about P0120 Nissan Code
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Discuss the causes and fixes for P0120 Nissan OBDII Code
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i have replaced the tps sensor and still throwing code enginge dies on open throttle like its not gettn fuel
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Hello, my car is nissan sentra 2006, the problem is that when the car is runnig suddenly the RPM go down to 800 and if you step on the gas goes to 1200 RPM max, the car can not advance so I have to switch off wait few minutes and the star switch on, some times i have to do this procedure 2 or 3 times until the car run normal. The problem is with the TPS sensor? Also, there is a code P1614 but that is a mal fuction of the NATs. What is the best option to fix my car?? Thanks.
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I have search everywhere, but there is no information for the P0120 code on your 2006 Nissan Sentra. Please double check the code. From what you explain, sound like you may have a problem with the throttle body. You could start by cleaning the throttle, but if the problem persist, then you may have to replace the throttle body.
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replaced the tps its running good but just tru p0120 code it on a 2000 xterra not sure what to do because if we move it it will not idle right
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Usually replacing the TPS takes care of the problem, I have not seen anything else triggering the P0120 code. What is the engine size of your Xterra? how did you adjust the new TPS sensor?
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