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Engine-Codes – Toyota – P0120 1997 Toyota Camry

P0120 1997 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction

Quick Answer

The P0120 diagnostic trouble code (DTC) for a 1997 Toyota Camry indicates a Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction. Common causes include Faulty throttle pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM. 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 1997 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction.
Common causes
Common causes include Faulty throttle pedal position sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ECM.
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 14, 2024
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Code P0120 1997 Toyota Camry Description

The P0120 diagnostic trouble code (DTC) for a 1997 Toyota Camry indicates a Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction. This means that the Engine Control Module (ECM) has detected an issue with the electrical circuit of the throttle pedal position sensor or switch. The throttle pedal position sensor is responsible for sending signals to the ECM to indicate the position of the throttle pedal. This information is crucial for the ECM to adjust the air-fuel mixture and control the engine's performance.

OBDII Code P0120 1997 Toyota Camry - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction
P0120 1997 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction

Common Causes of P0120 1997 Toyota Camry

  1. Faulty throttle pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning ECM
  4. Corrosion or moisture in the sensor connections
  5. Physical damage to the throttle pedal assembly

Symptoms of P0120 1997 Toyota Camry

  1. Decreased engine performance
  2. Poor fuel efficiency
  3. Rough idling or stalling
  4. Hesitation or lack of acceleration response
  5. Limp mode activation

How to Fix P0120 1997 Toyota Camry

  1. Begin by conducting a thorough inspection of the throttle pedal position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage output to determine if it is functioning within the manufacturer's specifications.
  3. If the sensor is faulty, replace it with a new one following the manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC using a scan tool and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0120 1997 Toyota Camry

The typical repair costs for addressing a Throttle Pedal Position Sensor/Switch 'A' Circuit Malfunction can range from $150 to $300, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Most auto repair shops commonly charge between $80 and $150 per hour, with rates potentially higher in metropolitan areas or at dealerships and lower at independent shops.

What does this mean?

Tech Notes for P0120 1997 Toyota Camry

Very common problem with Toyota models. Before replacing any parts, try cleaning the throttle body and reset the light. If the codes come back, then it will necessary to replaced the throttle position sensor (TPS). Most auto parts sell the TPS for around $60.

When is the Code Detected?

Malfunction is detected when an excessively low or high voltage from the sensor is sent to 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 P0120 1997 Toyota Camry Code

1. What are common symptoms of OBDII code P0120 in a 1997 Toyota Camry?

- Common symptoms include issues with acceleration, decreased engine power, and potential stalling of the vehicle.

2. What does the P0120 code indicate in a 1997 Toyota Camry?

- The P0120 code indicates a malfunction in the Throttle Pedal Position Sensor/Switch 'A' Circuit.

3. What are some possible causes of the P0120 code in a 1997 Toyota Camry?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, or a problem with the throttle pedal position switch.

4. How can I diagnose the cause of the P0120 code in my 1997 Toyota Camry?

- You can diagnose the issue by checking the throttle position sensor's voltage, inspecting the wiring and connectors for damage, and testing the throttle pedal position switch for proper functioning.

5. Can I still drive my 1997 Toyota Camry with the P0120 code present?

- It is not recommended to drive the vehicle with the P0120 code present, as it can lead to performance issues and potential safety hazards.

6. How can I repair the Throttle Pedal Position Sensor/Switch 'A' Circuit malfunction in my 1997 Toyota Camry?

- Repairing the issue involves replacing the faulty throttle position sensor, repairing or replacing damaged wiring or connectors, and ensuring the throttle pedal position switch is functioning correctly.

7. Is it possible to reset the OBDII code P0120 in a 1997 Toyota Camry without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause of the issue is addressed.

8. Can a DIY enthusiast fix the P0120 code issue in a 1997 Toyota Camry?

- Depending on your skill level and access to tools, it is possible to fix the P0120 code yourself by following repair guides and using proper diagnostic tools.

9. How much does it typically cost to repair the Throttle Pedal Position Sensor/Switch 'A' Circuit malfunction in a 1997 Toyota Camry?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Are there any preventive measures to avoid the recurrence of the P0120 code in a 1997 Toyota Camry?

- Regular maintenance checks, keeping an eye on the throttle system components, and addressing any issues promptly can help prevent the recurrence of the P0120 code.

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