Engine-Codes.com
Engine-Codes – Chevrolet – P1220 Chevrolet

P1220 Chevrolet Code - Throttle Position Sensor 2 Circuit

Quick Answer

The P1220 code for Chevrolet vehicles indicates an issue with the Throttle Position Sensor 2 Circuit. Common causes include Faulty Throttle Position Sensor 2, Wiring harness damage or corrosion, Poor electrical connections. 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
P1220 Chevrolet indicates Throttle Position Sensor 2 Circuit.
Common causes
Common causes include Faulty Throttle Position Sensor 2, Wiring harness damage or corrosion, Poor electrical connections.
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 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1220 Chevrolet Description

The P1220 code for Chevrolet vehicles indicates an issue with the Throttle Position Sensor 2 Circuit. The throttle position sensor (TPS) is a crucial component of the engine management system, as it monitors the position of the throttle valve and sends signals to the engine control module (ECM) to adjust fuel delivery and ignition timing accordingly. TPS 2 specifically refers to the second throttle position sensor in the system, which provides redundancy and backup in case the primary sensor fails.

OBDII Code P1220 Chevrolet - Throttle Position Sensor 2 Circuit
P1220 Chevrolet Code - Throttle Position Sensor 2 Circuit

Common Causes of P1220 Chevrolet

  1. Faulty Throttle Position Sensor 2
  2. Wiring harness damage or corrosion
  3. Poor electrical connections
  4. ECM communication errors
  5. Environmental factors (moisture, heat, etc.)

Symptoms of P1220 Chevrolet

  1. Erratic idling
  2. Stalling
  3. Poor acceleration
  4. Reduced fuel efficiency
  5. Transmission shifting problems

How to Fix P1220 Chevrolet

  1. Perform a thorough inspection of the Throttle Position Sensor 2 and wiring harness for any visible damage or corrosion.
  2. Test the sensor's voltage output using a multimeter to verify its functionality.
  3. Check and clean electrical connections to ensure proper signal transmission.
  4. Reset the ECM and clear the error code to see if the issue persists.
  5. Replace the Throttle Position Sensor 2 or repair any damaged wiring if necessary.

Cost to Fix P1220 Chevrolet

The typical repair costs for addressing the P1220 code related to the Throttle Position Sensor 2 Circuit can range from $100 to $300, including parts and labor. However, the 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 inquire about local rates to get a more accurate estimate for this repair. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often offer more competitive prices.

Need more information about the P1220 Chevrolet code?

Need more information on how to fix the P1220 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1220 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1220 Chevrolet Code

1. What are common symptoms of OBDII code P1220 in a Chevrolet related to the Throttle Position Sensor 2 Circuit?

- Common symptoms include poor engine performance, rough idling, stalling, and difficulty accelerating.

2. What are the possible causes of OBDII code P1220 in a Chevrolet indicating an issue with the Throttle Position Sensor 2 Circuit?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, or a malfunctioning electronic control module (ECM).

3. How can I diagnose the OBDII code P1220 in a Chevrolet related to the Throttle Position Sensor 2 Circuit?

- Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the throttle position sensor and its circuit for damage, and testing the sensor's voltage output.

4. Is it safe to continue driving a Chevrolet with OBDII code P1220 indicating a problem with the Throttle Position Sensor 2 Circuit?

- It is not recommended to continue driving the vehicle with this code as it can lead to further damage and potential safety hazards.

5. What are some repair tips for addressing OBDII code P1220 in a Chevrolet associated with the Throttle Position Sensor 2 Circuit?

- Repair tips may include replacing the throttle position sensor, repairing or replacing damaged wiring, and resetting the ECM after repairs are completed.

6. Can a DIY enthusiast fix OBDII code P1220 in a Chevrolet caused by the Throttle Position Sensor 2 Circuit issue?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides and instructions carefully.

7. How much does it typically cost to repair OBDII code P1220 in a Chevrolet related to the Throttle Position Sensor 2 Circuit at a professional auto repair shop?

- Repair costs can vary but are generally in the range of $100 to $300, depending on the extent of the damage and the specific repairs needed.

8. Can a malfunctioning Throttle Position Sensor 2 Circuit cause other OBDII codes to appear in a Chevrolet?

- Yes, a faulty Throttle Position Sensor 2 Circuit can cause related issues leading to the triggering of additional OBDII codes in the vehicle's system.

9. Are there any preventive maintenance measures that can help avoid OBDII code P1220 in a Chevrolet due to Throttle Position Sensor 2 Circuit problems?

- Regularly inspecting and maintaining the throttle position sensor, as well as ensuring proper wiring connections, can help prevent issues leading to this code.

10. How long does it typically take to repair OBDII code P1220 in a Chevrolet associated with the Throttle Position Sensor 2 Circuit?

- Repair times can vary depending on the extent of the issue and the availability of parts, but it generally takes a few hours to a full day to address this problem at a repair shop.

Discuss the causes and fixes for P1220 Chevrolet OBDII Code

Submit a New Comment

Code P1220 Chevrolet comments

No comments found for this page.