AutoCodesGMC – P247C GMC

P247C GMC Code - Exhaust Gas Temperature Out of Range Bank 2 Sensor 1

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P247C GMC indicates Exhaust Gas Temperature Out of Range Bank 2 Sensor 1.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 1,124
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 15, 2019
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Code P247C GMC Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P247C OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P247C GMC - Exhaust Gas Temperature Out of Range Bank 2 Sensor 1 - AutoCodes.com
P247C GMC Code - Exhaust Gas Temperature Out of Range Bank 2 Sensor 1

What are the Possible Causes of the DTC P247C GMC?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How to Fix the DTC P247C GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P247C GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 P247C GMC Code

What does the OBDII code P247C mean for my GMC?

The OBDII code P247C indicates that the exhaust gas temperature (EGT) for Bank 2, Sensor 1 is out of its normal operating range, suggesting a potential issue with the exhaust system or the EGT sensor itself.

What are the common symptoms associated with the P247C code?

Common symptoms may include check engine light illumination, poor engine performance, increased emissions, and unusual exhaust smells or excessive heat.

What can cause the P247C code to trigger?

Causes can include a faulty exhaust gas temperature sensor, wiring issues such as shorts or open circuits, exhaust leaks, or problems with the engine control module (ECM).

How can I diagnose the P247C code accurately?

To diagnose the P247C code, start by using an OBDII scanner to confirm the code and any additional codes. Inspect the sensor wiring and connectors for damage, check for exhaust leaks, and measure the exhaust gas temperatures with a multimeter or scan tool.

What are the potential repairs for the P247C code?

Repairs may involve replacing the faulty exhaust gas temperature sensor, repairing damaged wiring or connectors, addressing any exhaust leaks, or reprogramming or replacing the ECM if necessary.

Is it safe to drive with the P247C code?

While it may be safe to drive short distances, it’s advisable to address the issue promptly to prevent further damage to the engine or exhaust system.

How can I prevent the P247C code from reoccurring?

Regular maintenance, including checking for exhaust leaks, ensuring proper sensor calibration, and addressing any engine performance issues, can help prevent the P247C code from reappearing.

Will clearing the P247C code fix the problem?

Clearing the code may temporarily turn off the check engine light, but it won’t fix the underlying issue. The code will likely return if the root cause isn’t addressed.

Can I drive my GMC without repairing the P247C code?

While you may be able to drive your vehicle, it's not recommended to ignore the P247C code, as it can lead to more serious engine or exhaust system issues over time.

Discuss the causes and fixes for P247C GMC OBDII Code

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