P1197 2015 GMC Sierra Code - Exhaust Gas Temperature Sensor 4 Performance Engine Running
Quick Answer
The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas Temperature Sensor circuit poor electrical connection. 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
- P1197 2015 GMC Sierra indicates Exhaust Gas Temperature Sensor 4 Performance Engine Running.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas Temperature Sensor circuit poor electrical connection.
- 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.
Code P1197 2015 GMC Sierra Description
What are the Possible Causes of the DTC P1197 2015 GMC Sierra?
- Faulty Exhaust Gas Temperature Sensor
- Exhaust Gas Temperature Sensor harness is open or shorted
- Exhaust Gas Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1197 2015 GMC Sierra?
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 P1197 2015 GMC Sierra 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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Frequently Asked Questions about P1197 2015 GMC Sierra Code
1. What does the OBDII code P1197 mean on a 2015 GMC Sierra?
P1197 indicates an issue with the Exhaust Gas Temperature (EGT) Sensor 4 performance while the engine is running, meaning the sensor is not providing expected readings.
2. What are the symptoms of code P1197 on a 2015 GMC Sierra?
Common symptoms include the check engine light turning on, reduced engine performance, poor fuel efficiency, and potential issues with the diesel particulate filter (DPF) regeneration process.
3. What causes the P1197 code to appear on a 2015 GMC Sierra?
Possible causes include a faulty EGT Sensor 4, damaged wiring or connections in the EGT sensor circuit, excessive soot buildup on the sensor, or a malfunctioning engine control module (ECM).
4. Can I drive my 2015 GMC Sierra with the P1197 code?
It is not recommended to drive extensively with this code, as it could lead to issues such as improper DPF regeneration, increased emissions, or further engine damage.
5. How do I diagnose the P1197 code on a 2015 GMC Sierra?
Start by inspecting the EGT Sensor 4 and its wiring for damage or loose connections. Use a diagnostic scan tool to monitor sensor readings and compare them to expected values.
6. How is the P1197 code fixed on a 2015 GMC Sierra?
Repairs may include replacing the EGT Sensor 4, repairing damaged wiring or connectors, cleaning soot buildup, or reprogramming/updating the ECM if necessary.
7. How much does it cost to fix the P1197 code on a 2015 GMC Sierra?
The cost depends on the exact cause but typically ranges from $150 to $300 for sensor replacement, including parts and labor.
8. Can a faulty EGT Sensor 4 damage other components?
Yes, if the sensor fails to provide accurate readings, it could prevent proper DPF regeneration, leading to clogging and possibly damaging the exhaust system.
9. How can I prevent the P1197 code from recurring?
Regular maintenance, including cleaning or replacing EGT sensors as needed and ensuring proper DPF operation, can help prevent this code.
10. Will clearing the P1197 code with a scan tool fix the problem?
Clearing the code will temporarily turn off the check engine light, but the underlying issue must be fixed to prevent the code from returning.
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