Engine-CodesToyota – P2128 2006 Toyota Camry

P2128 2006 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High

Quick Answer

The diagnostic trouble code (DTC) P2128 for a 2006 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'E' Circuit Input High. Common causes include Faulty throttle pedal position sensor or switch, Short circuit in the wiring connected to the sensor/switch, Corrosion or damage to the electrical connectors. 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
P2128 2006 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'E' Circuit Input High.
Common causes
Common causes include Faulty throttle pedal position sensor or switch, Short circuit in the wiring connected to the sensor/switch, Corrosion or damage to the electrical connectors.
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.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2128 2006 Toyota Camry Description

The diagnostic trouble code (DTC) P2128 for a 2006 Toyota Camry indicates a problem with the Throttle Pedal Position Sensor/Switch 'E' Circuit Input High. This code specifically points to an issue with the throttle pedal position sensor or switch, which is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The 'E' circuit refers to a specific circuit within the sensor or switch.

OBDII Code P2128 2006 Toyota Camry - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High
P2128 2006 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'E' Circuit Input High

Common Causes of P2128 2006 Toyota Camry

  1. Faulty throttle pedal position sensor or switch
  2. Short circuit in the wiring connected to the sensor/switch
  3. Corrosion or damage to the electrical connectors
  4. ECM malfunction or software issues
  5. Environmental factors such as moisture or debris affecting the sensor/switch

Symptoms of P2128 2006 Toyota Camry

  1. Reduced engine power or acceleration
  2. Engine stalling or surging
  3. Check Engine Light illuminated on the dashboard
  4. Difficulty maintaining a consistent speed
  5. Limited throttle response

How to Fix P2128 2006 Toyota Camry

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the P2128 code and pinpoint the exact cause.
  2. Inspect the throttle pedal position sensor/switch, wiring, and connectors for any visible damage or corrosion.
  3. Test the sensor/switch using a multimeter to check for proper voltage signals.
  4. Replace the faulty sensor/switch if necessary, ensuring proper installation and connection.
  5. Clear the DTC and reset the ECM to allow for a relearn process and ensure the code does not reappear.

Cost to Fix P2128 2006 Toyota Camry

The cost to repair a P2128 code on a 2006 Toyota Camry can vary depending on the specific cause of the issue and the cost of parts and labor in your area. Typically, the cost of replacing a throttle pedal position sensor or switch can range from $100 to $300, including parts and labor. Additional diagnostic and repair costs may apply, so it's advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your specific situation. Keep in mind that labor rates can vary, with average rates ranging from $80 to $150 per hour.

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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 P2128 2006 Toyota Camry Code

1. What does OBDII code P2128 mean on a 2006 Toyota Camry?

P2128 indicates a high input voltage issue in the Throttle Pedal Position Sensor/Switch 'E' circuit, which monitors the position of the accelerator pedal.

2. What are the common symptoms of code P2128 in a 2006 Toyota Camry?

Symptoms may include poor throttle response, reduced engine performance, the vehicle entering limp mode, and the Check Engine Light turning on.

3. What causes code P2128 in a 2006 Toyota Camry?

Possible causes include a faulty throttle pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning Engine Control Module (ECM).

4. How do I diagnose the P2128 code in my 2006 Toyota Camry?

Inspect the throttle pedal position sensor, check for damaged or corroded wiring and connectors, and use a multimeter to measure voltage and continuity in the 'E' circuit.

5. Can I drive my 2006 Toyota Camry with a P2128 code?

Driving with this code is not recommended, as it can cause poor throttle response and potentially unsafe driving conditions.

6. How do I fix the P2128 code on a 2006 Toyota Camry?

Repairs may include replacing the throttle pedal position sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to repair a P2128 code on a 2006 Toyota Camry?

Repair costs vary, but replacing the throttle pedal position sensor typically costs between $100 and $300, including parts and labor.

8. Can a dirty throttle body cause the P2128 code?

A dirty throttle body usually doesn't cause this code; it is specifically related to the throttle pedal position sensor's 'E' circuit.

9. How do I reset the P2128 code on a 2006 Toyota Camry?

After fixing the issue, use an OBDII scanner to clear the code. If the issue persists, the code will reappear, indicating further diagnosis is needed.

10. What tools are needed to troubleshoot the P2128 code?

You’ll need an OBDII scanner, a multimeter, and basic hand tools to inspect and test the throttle pedal position sensor and its wiring.

Discuss the causes and fixes for P2128 2006 Toyota Camry OBDII Code

  • 2004 camry, 2.4, acceleration pedal goes halfway to floor before eng starts to rev. Appears to be in limp mode. Threw code p2121 (tps) code. After I cleared the code, cel immediately came back, this time with p2121 and p2128. Which do you think is the cause? Did the tps problem cause the petal code or vice versa?

  • Unfortunately I haven't had that problem before, but according to a national database of repairs for the 2004 Camry, the most common cause of the problem when you have both codes, P2121 and P2128, is the Accelerator Pedal Position (APP) Sensor, on the acceleration pedal.