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Engine-Codes – Nissan – P0122 2006 Nissan Sentra

P0122 2006 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Quick Answer

The diagnostic trouble code P0122 for a 2006 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch '1' Circuit having a low input. Common causes include Faulty Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corrosion or poor connections in the TPS circuit. 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
P0122 2006 Nissan Sentra indicates Throttle Position Sensor/Switch '1' Circuit Low Input.
Common causes
Common causes include Faulty Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corrosion or poor connections in the TPS circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0122 2006 Nissan Sentra Description

The diagnostic trouble code P0122 for a 2006 Nissan Sentra indicates a problem with the Throttle Position Sensor/Switch '1' Circuit having a low input. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic control system, as it monitors the position of the throttle valve. The TPS sends signals to the engine control unit (ECU) to determine the appropriate fuel injection and ignition timing. When the TPS '1' circuit has a low input, it means that the voltage signal from the sensor is lower than expected, which can disrupt the engine's performance and efficiency.

OBDII Code P0122 2006 Nissan Sentra - Throttle Position Sensor/Switch '1' Circuit Low Input
P0122 2006 Nissan Sentra Code - Throttle Position Sensor/Switch '1' Circuit Low Input

Common Causes of P0122 2006 Nissan Sentra

  1. Faulty Throttle Position Sensor
  2. Damaged wiring or connectors in the TPS circuit
  3. Corrosion or poor connections in the TPS circuit
  4. Issues with the ECU or related components

Symptoms of P0122 2006 Nissan Sentra

  1. Rough idling or stalling
  2. Poor acceleration and throttle response
  3. Decreased fuel efficiency
  4. Engine misfires
  5. Illuminated Check Engine Light

How to Fix P0122 2006 Nissan Sentra

  1. Begin by locating the Throttle Position Sensor on the vehicle.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as needed.
  3. Test the Throttle Position Sensor using a multimeter to ensure it is functioning correctly.
  4. If the TPS is faulty, replace it with a new one following the manufacturer's instructions.
  5. Clear the trouble code from the ECU and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0122 2006 Nissan Sentra

The typical repair costs for replacing a Throttle Position Sensor on a 2006 Nissan Sentra can range from $100 to $300 for parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on various factors. It is advisable to check with local repair shops for a more accurate estimate based on your location and vehicle specifics.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0122 2006 Nissan Sentra Code

What are the common symptoms of OBDII code P0122 on a 2006 Nissan Sentra?

Common symptoms of OBDII code P0122 on a 2006 Nissan Sentra may include poor acceleration, difficulty shifting gears, rough idling, and reduced fuel efficiency.

What are the possible causes of OBDII code P0122 on a 2006 Nissan Sentra?

Possible causes of OBDII code P0122 on a 2006 Nissan Sentra include a faulty throttle position sensor, damaged wiring or connectors related to the sensor, or a problem with the engine control module (ECM).

How can I diagnose the issue causing OBDII code P0122 on my 2006 Nissan Sentra?

To diagnose the issue causing OBDII code P0122 on a 2006 Nissan Sentra, you can use a scan tool to check for other related trouble codes, test the throttle position sensor using a multimeter, and inspect the wiring and connectors for any signs of damage.

What are some repair tips for fixing OBDII code P0122 on a 2006 Nissan Sentra?

Some repair tips for fixing OBDII code P0122 on a 2006 Nissan Sentra include checking and cleaning the throttle body, replacing the throttle position sensor if necessary, repairing any damaged wiring or connectors, and resetting the ECM after making repairs.

Is it safe to continue driving my 2006 Nissan Sentra with OBDII code P0122?

It is not recommended to continue driving your 2006 Nissan Sentra with OBDII code P0122, as it can lead to further damage to the engine or other components. It's best to address the issue promptly to avoid potential safety hazards.

Can I reset the OBDII code P0122 on my 2006 Nissan Sentra without fixing the underlying issue?

While you can clear the OBDII code P0122 on a 2006 Nissan Sentra using a scan tool, the code is likely to return if the underlying issue is not fixed. It's important to address the root cause of the problem to prevent further issues.

What is the significance of the Throttle Position Sensor/Switch '1' Circuit Low Input in the context of OBDII code P0122 on a 2006 Nissan Sentra?

The Throttle Position Sensor/Switch '1' Circuit Low Input in OBDII code P0122 on a 2006 Nissan Sentra indicates that the signal from the throttle position sensor is lower than expected, which can affect the engine performance and drivability of the vehicle.

How much does it typically cost to repair OBDII code P0122 on a 2006 Nissan Sentra?

The cost of repairing OBDII code P0122 on a 2006 Nissan Sentra can vary depending on the root cause of the issue, the cost of parts, and labor rates. It's recommended to consult with a mechanic or dealership for an accurate estimate.

Is the throttle position sensor easy to replace on a 2006 Nissan Sentra?

Replacing the throttle position sensor on a 2006 Nissan Sentra can vary in difficulty depending on the model and your mechanical skills. In most cases, it involves locating the sensor on the throttle body, disconnecting the wiring and mounting bolts, and installing the new sensor in its place.

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