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Engine-Codes – Generic – P20E3

P20E3 Code - Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1

Quick Answer

The P20E3 code indicates a correlation issue between the Exhaust Gas Temperature (EGT) Sensor 1 and Sensor 3 in Bank 1 of the vehicle's exhaust system. Common causes include Faulty EGT sensors, Wiring or connector issues, Exhaust system leaks. 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
P20E3 indicates Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1.
Common causes
Common causes include Faulty EGT sensors, Wiring or connector issues, Exhaust system leaks.
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 Aug 19, 2024
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Code P20E3 Description

The P20E3 code indicates a correlation issue between the Exhaust Gas Temperature (EGT) Sensor 1 and Sensor 3 in Bank 1 of the vehicle's exhaust system. These sensors are responsible for monitoring the temperature of the exhaust gases and ensuring that the engine is operating at optimal efficiency. When these sensors are not in sync, it can lead to a variety of performance issues.

OBDII Code P20E3 - Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1
P20E3 Code - Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1

Common Causes of P20E3

  1. Faulty EGT sensors
  2. Wiring or connector issues
  3. Exhaust system leaks
  4. Issues with the engine control module (ECM)
  5. Exhaust system blockages or restrictions

Symptoms of P20E3

  1. Check engine light illuminated
  2. Reduced power output
  3. Rough engine idle
  4. Decreased fuel efficiency
  5. Increased emissions

How to Fix P20E3

  1. Diagnose the specific EGT sensors causing the correlation issue
  2. Inspect and repair any damaged wiring or connectors
  3. Check for and repair any exhaust leaks
  4. Clear the diagnostic trouble codes and reset the engine control module
  5. Test drive the vehicle to ensure the issue has been resolved

Cost to Fix P20E3

The cost of repairing the P20E3 code can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get quotes from multiple sources before proceeding with the repair.

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Code P20E3 Information for Specific Makes

  • P20E3 Chevrolet — Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1
  • P20E3 Dodge — Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1
  • P20E3 Ford — Exhaust Gas Temperature Sensor 1/3 Correlation Bank 1
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.

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