Engine-Codes.com
Engine-Codes – GMC – P205E GMC

P205E GMC Code - Reductant Tank Temperature Sensor Circuit Intermittent/Erratic

Quick Answer

The P205E diagnostic trouble code (DTC) for GMC vehicles refers to a Reductant Tank Temperature Sensor Circuit Intermittent/Erratic issue. Common causes include Faulty Temperature Sensor: The most common cause of this code is a malfunctioning Reductant Tank Temperature Sensor, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code, Software Glitch: Sometimes, a software glitch in the engine control module can cause intermittent readings from the sensor. 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
P205E GMC indicates Reductant Tank Temperature Sensor Circuit Intermittent/Erratic.
Common causes
Common causes include Faulty Temperature Sensor: The most common cause of this code is a malfunctioning Reductant Tank Temperature Sensor, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code, Software Glitch: Sometimes, a software glitch in the engine control module can cause intermittent readings from the sensor.
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 20, 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 P205E GMC Description

The P205E diagnostic trouble code (DTC) for GMC vehicles refers to a Reductant Tank Temperature Sensor Circuit Intermittent/Erratic issue. This code indicates a problem with the sensor that monitors the temperature of the reductant tank, which is a crucial component of the Selective Catalytic Reduction (SCR) system in modern diesel vehicles. The reductant tank contains a fluid called Diesel Exhaust Fluid (DEF), which is sprayed into the exhaust stream to reduce harmful emissions. The temperature sensor is responsible for ensuring that the DEF is at the optimal temperature for effective emission reduction.

OBDII Code P205E GMC - Reductant Tank Temperature Sensor Circuit Intermittent/Erratic
P205E GMC Code - Reductant Tank Temperature Sensor Circuit Intermittent/Erratic

Common Causes of P205E GMC

  1. Faulty Temperature Sensor: The most common cause of this code is a malfunctioning Reductant Tank Temperature Sensor.
  2. Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the sensor can also trigger this code.
  3. Software Glitch: Sometimes, a software glitch in the engine control module can cause intermittent readings from the sensor.
  4. Exhaust System Leak: A leak in the exhaust system, near the reductant tank, can affect the temperature sensor's readings.

Symptoms of P205E GMC

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Power: The vehicle may experience a loss of power or decreased acceleration due to the incorrect temperature readings affecting engine performance.
  3. Poor Fuel Efficiency: A faulty Reductant Tank Temperature Sensor can cause the engine to run less efficiently, leading to increased fuel consumption.
  4. Failed Emissions Test: If the DEF system is not functioning properly, the vehicle may fail emissions tests due to higher emissions output.

How to Fix P205E GMC

  1. Diagnose the Issue: Use a scan tool to retrieve the specific code and diagnose the problem with the Reductant Tank Temperature Sensor.
  2. Inspect Wiring: Check the wiring harness for any damage, corrosion, or loose connections, and repair or replace as necessary.
  3. Replace Temperature Sensor: If the sensor is faulty, replace it with a new one following manufacturer guidelines.
  4. Clear Codes: After repairs are completed, clear the DTC and test drive the vehicle to ensure the issue has been resolved.
  5. Monitor System: Keep an eye on the vehicle's performance and emissions output to ensure the problem does not reoccur.

Cost to Fix P205E GMC

The typical repair costs for addressing a P205E GMC code can range from $200 to $500, including parts and labor. However, it's important to note that 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. Labor rates typically range between $80 and $150 per hour, but rates may be higher at dealerships or in metropolitan areas, while independent shops often charge less. For a more accurate estimate, it's recommended to inquire with local auto repair shops.

Need more information about the P205E GMC code?

Need more information on how to fix the P205E GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P205E GMC 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 P205E GMC Code

No Frequently Asked Questions about P205E GMC Code found.

Discuss the causes and fixes for P205E GMC OBDII Code

Submit a New Comment

Code P205E GMC comments

No comments found for this page.